# Casa

> Casa is the leading self-custody security company helping individuals and organizations protect their bitcoin and digital assets. Casa provides multi-signature (multisig) vault solutions with 3-key and 5-key configurations, hardware wallet support, inheritance planning, and sovereign recovery options.

Casa offers membership tiers from free single-key wallets to Private Client programs with dedicated support. The platform supports Ledger, Trezor, Coldcard, Keystone, Passport, and YubiKey hardware devices for both bitcoin (BTC) and ethereum (ETH) vaults.

## Products & Services

### Individual Plans

- [Standard Membership](https://casa.io/standard): Entry-level 3-key vault multisig security for bitcoin and ethereum
- [Premium Membership](https://casa.io/premium): Advanced 5-key vault with dedicated support and premium features
- [Private Client](https://casa.io/private-client): White-glove service with personalized security consultations
- [Pricing](https://casa.io/pricing): Compare all Casa membership tiers and features

### Organization Plans

- [Casa Business](https://casa.io/business): Multi-signature treasury management for growing companies
- [Casa Enterprise](https://casa.io/enterprise): Institutional-grade security with team-based multisig and compliance features
- [Casa Government](https://casa.io/government): Secure digital asset custody solutions for government entities

### Learn More

- [Self-Custody Guide](https://casa.io/learn-more/self-custody): Why self-custody matters and how Casa makes it easy
- [Inheritance Planning](https://casa.io/inheritance): Pass your bitcoin to loved ones securely
- [Private Keys Explained](https://casa.io/learn-more/private-keys): Understanding private key management and security
- [Multisig Wallets](https://casa.io/learn-more/multisig-wallets): How multi-signature security protects your assets
- [Bitcoin Wallet Guide](https://casa.io/learn-more/bitcoin-wallet): Best practices for bitcoin storage
- [Ethereum Wallet Guide](https://casa.io/learn-more/ethereum-wallet): Securing ethereum with Casa vaults

### Additional Resources

- [Casa Blog](https://blog.casa.io): Security insights, product updates, and bitcoin education
- [Download the App](https://casa.io/download): Get the Casa app for iOS and Android
- [Shared Accounts](https://casa.io/shared-accounts): Jointly manage assets with family or team members
- [Ethereum Features](https://casa.io/ethereum): Casa's ethereum vault capabilities
- [Contact Us](https://casa.io/contact-us): Get in touch with the Casa team
- [Careers](https://casa.io/careers): Join the Casa team

## Getting Started

- [Purchasing a Yubikey for your Casa vault](https://support.casa.io/knowledge/purchasing-a-yubikey)

### Getting Started with 3 key vault

- [3-key vault setup webinar](https://support.casa.io/knowledge/3-key-vault-setup-webinar)
- [Setting up your 3-key vault for bitcoin (BTC)](https://support.casa.io/knowledge/setting-up-your-3-key-vault-for-bitcoin-btc)
- [Getting started with the 3-key vault](https://support.casa.io/knowledge/getting-started-with-the-3-key-vault)
- [Setting up your 3-key vault for ethereum (ETH)](https://support.casa.io/knowledge/setting-up-your-3-key-vault-for-ethereum-eth): This article will guide you in setting up your 3-key vault for ETH
- [3 Key Vault Onboarding for Standard members](https://support.casa.io/knowledge/3kv-onboarding-for-standard-members)

### Getting Started with 5 key vault

- [6. Activate your 5-key vault](https://support.casa.io/knowledge/6.-activate-your-5-key-vault)
- [1. Setting up your 5-key vault](https://support.casa.io/knowledge/1.-setting-up-your-5-key-vault)
- [Setting up your 5-key vault for ethereum (ETH)](https://support.casa.io/knowledge/setting-up-your-5-key-vault-for-ethereum-eth): This article details how to set up your 5-key vault for ethereum (ETH).
- [5. Basics of hardware device security](https://support.casa.io/knowledge/5.-basics-of-hardware-device-security)
- [4. Setup checklist for your 5-key vault](https://support.casa.io/knowledge/4.-setup-checklist-for-your-5-key-vault)
- [7. Securing your seed phrase and labeling devices](https://support.casa.io/knowledge/7.-securing-your-seed-phrase-and-labeling-devices)
- [2. Choosing how many seeds to save for the 5-key vault](https://support.casa.io/knowledge/2.-choosing-seeds-to-save-for-the-5-key-vault)
- [Premium Customer Onboarding Call Readiness List](https://support.casa.io/knowledge/premium-customer-onboarding-call-readiness-list): The following is a list of things you can do to be prepared for our onboarding call and help things go smoothly. This li
- [3. Basics of digital security](https://support.casa.io/knowledge/3.-basics-of-digital-security)

## Educational Resources


### Bitcoin FAQ

- [Is bitcoin anonymous?](https://support.casa.io/knowledge/is-bitcoin-anonymous): Bitcoin is a distributed network that is considered "pseudonymous," not "anonymous."
- [How much is bitcoin worth?](https://support.casa.io/knowledge/how-much-is-bitcoin-worth): One bitcoin is worth one bitcoin.
- [Can bitcoin be hacked?](https://support.casa.io/knowledge/can-bitcoin-be-hacked): The bitcoin network has never been hacked. Individual coins that have been poorly secured, have been stolen, and are alw
- [What is a bitcoin wallet?](https://support.casa.io/knowledge/what-is-a-bitcoin-wallet): A bitcoin wallet is a computer, smartphone app, or hardware device that stores private keys that are necessary to sign a
- [Why would I use bitcoin?](https://support.casa.io/knowledge/why-would-i-use-bitcoin): You should use bitcoin because it is better money.
- [Who is the CEO of bitcoin?](https://support.casa.io/knowledge/who-is-the-ceo-of-bitcoin): There is no CEO of bitcoin. Bitcoin is a decentralized network controlled by all of its owners and participants.
- [What is multisig?](https://support.casa.io/knowledge/what-is-multisig): Multisig is short for "multi-signature." Multisig refers to having multiple private keys for a single wallet.
- [What's the best way to secure my bitcoin? ](https://support.casa.io/knowledge/whats-the-best-way-to-secure-my-bitcoin): The best way to secure your bitcoin is to take control of your private keys in a way that's safe and secure.
- [Is there more than one bitcoin network?](https://support.casa.io/knowledge/is-there-more-than-one-bitcoin-network): There are other cryptocurrency networks similar to bitcoin--even some that claim to be bitcoin--but there is only one bi
- [Can governments ban bitcoin?](https://support.casa.io/knowledge/can-governments-ban-bitcoin): Though it's possible for laws to be passed which prohibit the ownership or use of cryptocurrency, there is no way to shu
- [How is bitcoin secured?](https://support.casa.io/knowledge/how-is-bitcoin-secured): The bitcoin network is secured by the distributed network of computers all around the world that are running the bitcoin
- [Is bitcoin legal?](https://support.casa.io/knowledge/is-bitcoin-legal): In virtually every jurisdiction around the world, bitcoin is legal to own and use.
- [How many bitcoin are there?](https://support.casa.io/knowledge/how-many-bitcoin-are-there): There will never be more than 21 million bitcoin that will ever be created.
- [What is bitcoin?](https://support.casa.io/knowledge/what-is-bitcoin): Bitcoin is a scarce digital asset that can be sent securely over the internet without needing an intermediary.
- [What is the Lightning network?](https://support.casa.io/knowledge/what-is-the-lightning-network): The Lightning network is a second layer payment network built on top of bitcoin.

### Ethereum FAQ

- [What is ethereum?](https://support.casa.io/knowledge/what-is-ethereum)
- [What is a Stablecoin?](https://support.casa.io/knowledge/what-is-a-stablecoin)
- [How much is ether worth?](https://support.casa.io/knowledge/how-much-is-ether-worth)
- [Can I send NFTs, ERC-20, or other tokens to the Casa app?](https://support.casa.io/knowledge/can-i-send-nfts-erc-20-or-other-tokens-to-the-casa-app): The only ethereum network assets that the Casa app supports are ether (ETH), stETH, USDT and USDC.
- [Ethereum network fees](https://support.casa.io/knowledge/ethereum-network-fees)
- [Types of ethereum addresses](https://support.casa.io/knowledge/types-of-ethereum-addresses): There are two types of addresses on the ethereum network: EOA addresses and contract addresses.
- [How many ether are there?](https://support.casa.io/knowledge/how-many-ether-are-there)
- [Sending funds using ETH Pay Wallet Relay](https://support.casa.io/knowledge/sending-funds-using-eth-pay-wallet-relay)
- [What is an ethereum wallet?](https://support.casa.io/knowledge/what-is-an-ethereum-wallet)
- [Viewing your ETH transaction on Etherscan](https://support.casa.io/knowledge/viewing-your-eth-transaction-on-etherscan)

### Node Recovery

- [Static channel backup recovery](https://support.casa.io/knowledge/static-channel-backup-recovery): This article is intended for advanced users, and covers how to recover funds from a non-working Casa Node using the SCB 
- [Casa Node funds recovery guide](https://support.casa.io/knowledge/casa-node-funds-recovery-guide): The following guide is for recovery both on-chain AND off-chain funds (those in lightning channels.)

### Ordinals and inscriptions

- [What are ordinals and inscriptions?](https://support.casa.io/knowledge/what-are-ordinals-and-inscriptions): Ordinals and inscriptions are technologies for creating non-fungibility on bitcoin.
- [How to secure and send bitcoin ordinals and inscriptions](https://support.casa.io/knowledge/how-to-secure-and-send-bitcoin-ordinals-and-inscriptions): Ordinals and inscriptions are technologies for creating non-fungibility on bitcoin. There are key things to consider whe
- [How to do a key rotation when you're holding an ordinal or inscription in your Casa vault](https://support.casa.io/knowledge/how-to-do-a-key-rotation-when-youre-holding-an-ordinal-or-inscription-in-your-casa-vault)

### Retirement accounts

- [Using Casa for a self-directed IRA](https://support.casa.io/knowledge/using-casa-for-a-self-directed-ira)

### Security

- [Real-world identity privacy and recovery transactions](https://support.casa.io/knowledge/real-world-identity-privacy-and-recovery-transactions)
- [Casa Domain Change](https://support.casa.io/knowledge/casa-domain-change)
- [Internet privacy](https://support.casa.io/knowledge/internet-privacy)
- [Password managers](https://support.casa.io/knowledge/password-managers)
- [What is cold storage?](https://support.casa.io/knowledge/what-is-cold-storage): Using "cold storage" for digital assets means keeping keys offline and disconnected from the internet. This is to reduce
- [Moving to a new home (and your Casa keys)](https://support.casa.io/knowledge/moving-to-a-new-home-and-your-casa-keys)
- [Bitcoin network privacy](https://support.casa.io/knowledge/bitcoin-network-privacy)
- [Enhanced Account Security: Verification Codes](https://support.casa.io/knowledge/what-is-a-verification-code): Premium and Private members have an enhanced Account security verification protocol for account sensitive actions.
- [Official Casa Owned Domains](https://support.casa.io/knowledge/official-casa-owned-domains): Below is a list of official Casa owned domains and channels of which we communicate from.
- [lopp.net](https://support.casa.io/knowledge/lopp.net)
- [Using Passkeys for your Casa 2FA](https://support.casa.io/knowledge/using-passkeys-for-your-casa-2fa)
- [The "Casa Security Briefing" newsletter](https://support.casa.io/knowledge/the-casa-security-briefing-newsletter): The Casa Security Briefing is a weekly email newsletter we send out that details current events related to digital asset
- [Wealth Security Protocol](https://support.casa.io/knowledge/wealth-security-protocol)
- [General security considerations](https://support.casa.io/knowledge/general-security-considerations)
- [Faraday bag](https://support.casa.io/knowledge/faraday-bag)
- [Physical address privacy](https://support.casa.io/knowledge/physical-address-privacy)
- [How to Detect a Scam](https://support.casa.io/knowledge/how-to-detect-a-scammer): Simple Tips to Protect Yourself from Phishing, Impersonators, and Too-Good-To-Be-True Crypto Offers

## Hardware devices

- [Dongles and Connector Cables for your Hardware Device.](https://support.casa.io/knowledge/dongles-and-connector-cables-for-your-hardware-device): Dongles and connector cables play a crucial role in optimizing the functionality of your hardware wallet, ensuring seaml

### Adding hardware devices to Casa

- [Adding Passport to your Casa vault](https://support.casa.io/knowledge/adding-passport-to-your-casa-vault)
- [Adding Ledger to your Casa vault](https://support.casa.io/knowledge/adding-ledger-to-your-casa-vault-1)
- [Adding Trezor to your Casa vault](https://support.casa.io/knowledge/adding-trezor-to-your-casa-vault-1)
- [Adding Keystone to your Casa vault](https://support.casa.io/knowledge/adding-keystone-to-your-casa-vault)
- [Adding Coldcard to your Casa vault](https://support.casa.io/knowledge/adding-coldcard-to-your-casa-vault-1)
- [Adding YubiKey to your Casa vault](https://support.casa.io/knowledge/adding-yubikey-to-your-casa-vault): Casa supports YubiKey as a hardware security key for enhanced security in your vault. Follow these steps to add your Yub

### Coldcard

- [How to check the Coldcard Ypub](https://support.casa.io/knowledge/how-to-check-the-coldcard-ypub): These instructions describe how to verify that the Ypub you see in your Casa app matches the Ypub derived from your Cold
- [Where to purchase a Coldcard device](https://support.casa.io/knowledge/where-to-purchase-a-coldcard-device)

### General information

- [Hardware device life cycle and degradation](https://support.casa.io/knowledge/hardware-device-life-cycle-and-degradation)
- [Hardware device funds are not showing in the Casa app](https://support.casa.io/knowledge/hardware-device-funds-are-not-showing-in-the-casa-app): When you add your hardware device(s) to Casa to create your 3-key or 5-key vault, you're creating an entirely new set of
- [How to sign with a hardware device without email access](https://support.casa.io/knowledge/how-to-sign-with-a-hardware-device-without-email-access): In order to send funds from your Casa vault, you need to approve the transaction using one or more hardware devices.
- [How to Safely Obtain and Store Your Seed Phrases](https://support.casa.io/knowledge/how-to-safely-obtain-and-store-your-seed-phrases): Keeping your seed phrase secure is crucial to protecting your crypto wallet. Here are some simple steps you can follow:
- [Mostly Seedless multisig](https://support.casa.io/knowledge/seedless-multisig): Casa's multisig security model optionally allows for a "seedless" or "nearly seedless" key setup, in which you do not re
- [Where to purchase your hardware device](https://support.casa.io/knowledge/where-to-purchase-your-hardware-device)
- [How to check your YubiKey firmware version](https://support.casa.io/knowledge/yubikey-firmware-version)
- [How to Duplicate Your YubiKey](https://support.casa.io/knowledge/how-to-duplicate-your-yubikey): If you need a backup YubiKey for redundancy purposes, you can create a duplicate from your device settings.
- [Restoring a hardware device using the backup seed phrase](https://support.casa.io/knowledge/restoring-a-hardware-device-using-the-backup-seed-phrase)
- [Hardware devices and keyset diversity](https://support.casa.io/knowledge/hardware-devices-and-keyset-diversity)
- [Hardware device firmware updates](https://support.casa.io/knowledge/hardware-device-firmware-upgrades): Updating hardware can be risky business. It is good to health check your other devices prior to making changes.

### Hardware device setup

- [Setting up YubiKey for use with Casa](https://support.casa.io/knowledge/setting-up-yubikey-for-use-with-casa): Casa now supports YubiKey as a hardware device for BTC and ETH vaults.
- [Setting up Passport (Batch 2) for use with Casa](https://support.casa.io/knowledge/setting-up-passport-batch-2-for-use-with-casa): This article details how to set up (initialize) your Passport hardware device out of the box for use with Casa.
- [Setting up Coldcard for use with Casa](https://support.casa.io/knowledge/setting-up-coldcard-for-use-with-casa-1)
- [Setting up Keystone for use with Casa](https://support.casa.io/knowledge/setting-up-keystone-for-use-with-casa): This article details how to set up (initialize) your Keystone hardware device out of the box for use with Casa.
- [Setting up Trezor Safe 3 for use with Casa](https://support.casa.io/knowledge/setup-trezor-safe-3): This article details how to set up (initialize) your Tezor Safe 3 hardware device out of the box for use with Casa.
- [Setting up Trezor One for use with Casa](https://support.casa.io/knowledge/setting-up-trezor-one-for-use-with-casa-1): This article details how to set up (initialize) your Trezor One hardware device for use with Casa.
- [Setting up Ledger for use with Casa](https://support.casa.io/knowledge/setting-up-ledger-for-use-with-casa-1)
- [Setting up Trezor Model T for use with Casa](https://support.casa.io/knowledge/setting-up-trezor-model-t-for-use-with-casa): This article details how to set up (initialize) your Trezor Model T hardware device for use with Casa.
- [Setting up Passport (Founders Edition) for use with Casa](https://support.casa.io/knowledge/setting-up-passport-for-use-with-casa-1): This article details how to set up (initialize) your Passport hardware device out of the box for use with Casa.

### Health checks

- [Health checks in the Casa app](https://support.casa.io/knowledge/health-checks-in-the-casa-app): Health checks in the Casa app are an easy way to verify that your keys are available for signing transactions.
- [Performing a health check with Coldcard](https://support.casa.io/knowledge/performing-a-health-check-with-coldcard): The steps detailed below show how to perform a health check of your Coldcard in your Casa app to ensure that it is avail
- [Performing a health check with Passport](https://support.casa.io/knowledge/performing-a-health-check-with-passport): Health checks in the Casa app allow you to verify the health of a key without actually having to send any funds from you
- [Performing a health check for Casa Recovery Key](https://support.casa.io/knowledge/how-to-verify-your-casa-recovery-key-questions): 3-Key Vault and Standard users verify answers to the Casa Recovery Key questions for completing Health Checks in the Cas
- [Performing a health check with Ledger](https://support.casa.io/knowledge/performing-a-health-check-with-ledger)
- [Performing a health check with Keystone](https://support.casa.io/knowledge/performing-a-health-check-with-keystone): Health checks allow you to verify the health of your Keystone device without actually having to send any funds from your
- [Performing a health check with Trezor](https://support.casa.io/knowledge/performing-a-health-check-with-trezor): This guide details how to complete a health check in the Casa app using your Trezor One, Trezor 3, or Trezor Model T dev
- [Performing a Health check with YubiKey](https://support.casa.io/knowledge/performing-a-health-check-with-yubikey): This guide details how to complete a health check in the Casa app using your YubiKey device.

### Keystone

- [Where to purchase a Keystone device](https://support.casa.io/knowledge/where-to-purchase-a-keystone-device)

### Ledger

- [Ledger wallet registration](https://support.casa.io/knowledge/ledger-wallet-registration): Ledger has implemented a new wallet registration procedure for signing bitcoin transactions with their devices. Ledger u
- [Can I use Bluetooth with Ledger Nano X?](https://support.casa.io/knowledge/can-i-use-bluetooth-with-ledger-nano-x)
- [Where to purchase a Ledger device](https://support.casa.io/knowledge/where-to-purchase-a-ledger-device)

### Passport by Foundation

- [Where to purchase a Passport device](https://support.casa.io/knowledge/where-to-purchase-a-passport-device)

### Sending from your device to Casa

- [How to send from Trezor to Casa](https://support.casa.io/knowledge/how-to-send-from-trezor-to-casa-1): This article details how to send funds on your Trezor device's single-signature wallet to your multi-key Casa vault.
- [How to send from Ledger to Casa](https://support.casa.io/knowledge/how-to-send-from-ledger-to-casa): This article details how to send funds on your Ledger device's single-key wallet to your multi-key Casa vault via Ledger

### Signing with a hardware device

- [Signing a transaction with Ledger](https://support.casa.io/knowledge/signing-a-transaction-with-ledger-1): This guide details how to apply a Casa vault transaction signature using your Ledger Nano S or Ledger Nano X device.
- [Signing a transaction with Passport](https://support.casa.io/knowledge/signing-a-transaction-with-passport-1): This guide details how to sign a transaction using your Passport device.
- [QR code signing in Casa vaults](https://support.casa.io/knowledge/qr-code-signing-in-casa-vaults)
- [Signing a transaction with Keystone](https://support.casa.io/knowledge/signing-a-transaction-with-keystone-1): This guide details how to sign a transaction using your Keystone device.
- [Signing a transaction with Coldcard](https://support.casa.io/knowledge/signing-a-transaction-with-coldcard-1): After adding your Coldcard to your Casa vault, you can use your Coldcard to sign a transaction from your BTC vault in Ca
- [Signing a transaction with YubiKey](https://support.casa.io/knowledge/signing-a-transaction-with-yubikey): This guide details how to apply a Casa vault transaction signature using your YubiKey
- [Signing a transaction with Trezor](https://support.casa.io/knowledge/signing-a-transaction-with-trezor): This guide details how to apply a Casa vault transaction signature using your Trezor One, Trezor 3, or Trezor Model T de

### Trezor

- [Where to purchase a Trezor device](https://support.casa.io/knowledge/where-to-purchase-a-trezor-device)

### Troubleshooting

- [Trezor Suite](https://support.casa.io/knowledge/trezor-suite-and-trezor-bridge): Trezor Suite and Trezor Bridge are necessary components in the signing process for Trezor devices.
- [Coldcard troubleshooting](https://support.casa.io/knowledge/coldcard-troubleshooting): Coldcard Mk 3+ hardware devices are compatible with Casa multisig vaults.
- [General hardware device troubleshooting](https://support.casa.io/knowledge/general-hardware-device-troubleshooting)
- [Ledger troubleshooting](https://support.casa.io/knowledge/ledger-troubleshooting-1)
- [Trezor troubleshooting](https://support.casa.io/knowledge/trezor-troubleshooting)
- [Troubleshooting Mobile Key Issues](https://support.casa.io/knowledge/mobile-key-troubleshooting): Find mobile key troubleshooting steps for iPhone and Android devices
- [YubiKey troubleshooting](https://support.casa.io/knowledge/yubikey-troubleshooting): When using a YubiKey with your Casa Vault, there are specific requirements and restrictions to ensure smooth functionali

## Inheritance

- [Comparing Inheritance Solutions](https://support.casa.io/knowledge/comparing-inheritance-solutions): This article will outline the different inheritance solutions.

### Inheritance Overview

- [Basic inheritance for Standard members](https://support.casa.io/knowledge/basic-inheritance-for-standard-members): Securely Passing Bitcoin to Your Loved Ones with Peace of Mind

### Recipient

- [FAQs: Recipients](https://support.casa.io/knowledge/inheritance-faqs-recipient): Answers for recipients to Common Questions About Inheritance
- [Recipient Health Checks](https://support.casa.io/knowledge/recipient-health-checks): This article will help your recipients navigate their semi-annual health checks
- [Restoring your Casa Inheritance when your Recipient gets a new phone](https://support.casa.io/knowledge/restoring-inheritance-new-phone): Restoring a your Casa Inheritance set up if the Mobile Key is missing
- [How do I gain access to a Vault with Enhanced Verification?](https://support.casa.io/knowledge/how-do-i-gain-access-to-a-vault-with-enhanced-verification): This article explains the process for recipients to access a vault with Enhanced Verification

### Vault Owners

- [Best hardware key sharing practices](https://support.casa.io/knowledge/sharing-hardware-keys): This article guides you on how to safely share your hardware keys with your intended recipient.
- [FAQs: Vault Owner](https://support.casa.io/knowledge/inheritance-faqs-vault-owner): Answers to Common Questions About Inheritance
- [Private Client Enhanced Verification Program](https://support.casa.io/knowledge/inheritance-with-enhanced-verification): Ensure Your Crypto Legacy with Casa's Enhanced Verification Inheritance Program
- [Setting up Inheritance for 3-Key Vault](https://support.casa.io/knowledge/setting-up-inheritance-for-3kv): Follow these steps to setup your Inheritance for your 3-Key Vault.
- [Setting up inheritance for the 5-Key Vault](https://support.casa.io/knowledge/setting-up-inheritance-for-your-5-key-vault): Follow these steps to set up Inheritance for your 5-Key or 6-Key Vault.
- [Inheritance hardware key sharing](https://support.casa.io/knowledge/inheritance-hardware-key-sharing): Learn about the different ways you can share your Hardware Key with your Recipient and what will work best for you.

## Organizations

- [Casa Dashboard](https://support.casa.io/knowledge/casa-dashboard): The Casa Dashboard enables organizations to efficiently manage company treasuries with features like Role-Based Access C
- [Business and Enterprise Key Replacements (hardware device key rotation)](https://support.casa.io/knowledge/business-and-enterprise-key-replacements-hardware-device-key-rotation): When securing business assets, it is essential to have clear protocols for key management, including the ability to repl
- [Inviting and Managing Viewers on Your Dashboard](https://support.casa.io/knowledge/inviting-and-managing-viewers-on-your-dashboard-): The Viewer role allows teammates, auditors, or executives to monitor your treasury without participating in transaction 

### Business

- [Customizing Your Casa Business 3-Key Vault for Your Organization’s Needs](https://support.casa.io/knowledge/customizing-your-casa-business-3-key-vault-for-your-organizations-needs): This article explores some of the ways a business can customize their vault based on operational needs.
- [What is Casa Business](https://support.casa.io/knowledge/what-is-casa-business): Casa Business offers growing organizations a secure, self-custody solution for managing crypto. It features multi-signat
- [Setting up your 3-key Business Vault](https://support.casa.io/knowledge/setting-up-your-3-key-business-vault-for-bitcoin): This article will help guide you through setting up your Business 3 Key Vault.

### Enterprise

- [Individual Team Signing Recovery Photos](https://support.casa.io/knowledge/individual-team-photos): Setting Up the Casa Recovery Key for Enterprises Using Individual Team Photos
- [Casa Enterprise](https://support.casa.io/knowledge/casa-enterprise): Institutional-grade security and seamless digital asset management with team-based multisig and enterprise-level dashboa

## Memberships, Accounts, and Billing

- [Referral program](https://support.casa.io/knowledge/referral-program)

### Membership levels

- [Upgrading your Casa membership](https://support.casa.io/knowledge/upgrading-your-casa-membership)
- [Standard membership with 3-key vault](https://support.casa.io/knowledge/standard-membership-with-3-key-vault): Casa's Standard membership is the easiest way to get started with multisig security.
- [Using multiple Casa accounts](https://support.casa.io/knowledge/using-multiple-casa-accounts)
- [Premium membership with 5-key vault](https://support.casa.io/knowledge/premium-membership-with-5-key-vault): Casa's Premium membership delivers comprehensive, elegant security that gives you full control over your wealth.
- [Standard Plus membership with 5-key vault](https://support.casa.io/knowledge/standard-plus-membership-with-5-key-vault): Casa's Standard membership features an advanced 5-key vault. There are five total keys in your setup, and you can send f
- [Free Account: Single-Key Casa Pay Wallet](https://support.casa.io/knowledge/free-membership-with-casa-pay): Casa's complimentary membership includes a fast, safe, simple digital currency storage solution for beginners or people 
- [Casa membership levels - an overview](https://support.casa.io/knowledge/casa-membership-levels-an-overview): Casa offers a wide range of membership options for every level, from guppy to whale.
- [Private Client Program](https://support.casa.io/knowledge/private-client-with-5-key-or-6-key-vault): Becoming a Private Client at Casa provides the highest level of comprehensive service and security available for Bitcoin
- [Which membership plan should I get?](https://support.casa.io/knowledge/what-membership-plan-should-i-get)
- [5-key vault vs. 3-key vault comparison](https://support.casa.io/knowledge/5-key-vault-vs.-3-key-vault-comparison)

### Membership payments

- [How to cancel your Google Play subscription](https://support.casa.io/knowledge/how-to-cancel-your-google-play-subscription)
- [How to renew your account](https://support.casa.io/knowledge/how-to-renew-your-account)
- [How to cancel your credit card subscription](https://support.casa.io/knowledge/how-to-cancel-your-credit-card-subscription)
- [How to Pay for Your Casa Subscription Using Apple Pay or Google Pay](https://support.casa.io/knowledge/how-to-pay-for-your-casa-subscription-using-apple-pay-or-google-pay): We're excited to announce that you can quickly and securely pay for your Casa subscription with Apple or Google Pay.
- [In-app subscription purchasing](https://support.casa.io/knowledge/in-app-subscription-purchasing)
- [Paying for your membership with bitcoin](https://support.casa.io/knowledge/paying-for-your-membership-with-bitcoin)
- [How to cancel your Apple subscription](https://support.casa.io/knowledge/how-to-cancel-your-apple-subscription): If you've paid for your annual Casa membership using an in-app purchase through the Apple App Store on your iPhone, you’
- [What happens if my membership expires?](https://support.casa.io/knowledge/what-happens-if-my-membership-expires)
- [Refund and cancellation policy](https://support.casa.io/knowledge/refund-and-cancellation-policy)
- [Updating your membership payment method](https://support.casa.io/knowledge/updating-your-membership-payment-method): The easiest way to pay for your Casa membership is via credit card. This allows your membership to be renewed automatica

### Other account questions

- [Changing your Casa account password](https://support.casa.io/knowledge/changing-your-casa-account-password)
- [How to Change Your Account Email](https://support.casa.io/knowledge/how-to-change-your-casa-account-email): Casa email account changes.
- [Deleting your Casa account](https://support.casa.io/knowledge/deleting-your-casa-account): If you'd like to delete your Casa account, you can do this within the Casa app.
- [Free Trial](https://support.casa.io/knowledge/free-trial): Casa offers a 30-day free trial for first-time members to experience key features of our Standard Tier, including Bitcoi
- [Email troubleshooting](https://support.casa.io/knowledge/email-troubleshooting)

## Financial Services


### Buying and Selling using Zero Hash

- [How to Deposit Funds via Wire Transfer](https://support.casa.io/knowledge/how-to-set-up-wire-deposits)
- [How to Deposit and Withdraw Cash with Zero Hash](https://support.casa.io/knowledge/how-to-deposit-and-withdraw-cash-with-zero-hash)
- [How to Buy Crypto Using Your Zero Hash Account](https://support.casa.io/knowledge/how-to-buy-crypto-using-your-zero-hash-account)
- [How to Sell Crypto Using Your Zero Hash Account](https://support.casa.io/knowledge/how-to-sell-crypto-using-your-zero-hash-account): To sell crypto, you’ll first need to move the asset from your Casa Vault or Pay Key to your Buy/Sell Account.
- [Zero Hash Crypto Buying & Selling: Rates and Fees Explained](https://support.casa.io/knowledge/zero-hash-crypto-buying-selling-rates-and-fees-explained): When buying or selling crypto through Zero Hash, your transaction fee depends on your membership tier and your rolling 3
- [Why did my bank account connection fail?](https://support.casa.io/knowledge/why-did-my-bank-account-connection-fail): Troubleshooting Bank Connection Issues for Your Buy/Sell Account Learn common reasons why your bank account may not link
- [Zero Hash: Permitted and Restricted Jurisdictions](https://support.casa.io/knowledge/zerohash-permitted-and-restricted-jurisdictions): Find out the permitted and restricted jurisdictions of Zero Hash, Casa's third-party trading partner
- [Casa Recurring Buys: Timing, Fees, and How They Work](https://support.casa.io/knowledge/how-recurring-buys-work): Recurring buys let you automate your crypto purchases by scheduling them on a regular basis—removing the need to log in 

### Zero Hash Account

- [Sending Crypto from Your Zero Hash Account to a Casa Vault or Pay Key](https://support.casa.io/knowledge/sending-crypto-from-your-zero-hash-account-to-a-casa-vault-or-pay-key): Learn how to transfer crypto from Zero Hash to your Casa Vault or Pay Key for self-custody. This guide covers step-by-st
- [How do I open a Zero Hash account in Casa?](https://support.casa.io/knowledge/zerohash-account-setup)
- [Zero Hash Account Setup: What to Do If It Fails or Isn’t Approved](https://support.casa.io/knowledge/zero-hash-account-setup-what-to-do-if-it-fails-or-isnt-approved)
- [Why Was My Zero Hash Account Locked or Disabled?](https://support.casa.io/knowledge/why-was-my-zero-hash-account-locked-or-disabled)

## Contact Support

- [Contact Support](https://support.casa.io/knowledge/contact-support-1): Learn More About Getting Help at Casa

## Partnerships

- [Current Partnerships at Casa](https://support.casa.io/knowledge/our-current-partners): We want to equip our clients with the best tools and services  to confidently navigate the Bitcoin ecosystem, digital as
- [Partnerships Overview](https://support.casa.io/knowledge/partnerships-overview)

### Financial Tools

- [Unlocking the New Ways to Use Your Bitcoin and Ether Assets with Casa and Ledn](https://support.casa.io/knowledge/unlocking-the-new-ways-to-use-your-bitcoin-and-ether-assets-with-casa-and-ledn)
- [Casa Partner: River - Buy and Sell Bitcoin](https://support.casa.io/knowledge/casa-partner-river-buy-and-sell-bitcoin)

### Privacy Tools

- [Protect Your Phone and Identity with Casa and Efani](https://support.casa.io/knowledge/protect-your-phone-and-identity-with-casa-and-efani)
- [Casa Partner: PrivacyHawk - Data Privacy and Management](https://support.casa.io/knowledge/casa-partner-privacyhawk-data-privacy-and-management)

## Using the Casa app

- [Download Transaction History (.csv)](https://support.casa.io/knowledge/download-transaction-history-.csv): Casa offers two methods for downloading your history of transactions
- [Troubleshooting Missing Emails](https://support.casa.io/knowledge/troubleshooting-missing-emails): What to Do if You Haven’t Received an Email from Casa
- [Casa App Gets a Visual Update!](https://support.casa.io/knowledge/casa-app-gets-a-visual-update): Casa has updated the app’s vault view to make it cleaner and easier to navigate.

### (Advanced) Open-source integrations

- [Sovereign Recovery for ethereum vaults](https://support.casa.io/knowledge/sovereign-recovery-for-ethereum-vaults): This article details how to perform Sovereign Recovery for ethereum assets held within Casa vaults.
- [Non-standard Android operating systems](https://support.casa.io/knowledge/non-standard-android-operating-systems)
- [Sovereign Recovery for bitcoin vaults via Sparrow Wallet](https://support.casa.io/knowledge/sovereign-recovery-with-sparrow-wallet): "Sovereign Recovery" is what we call the ability to create a transaction outside of the Casa app using open-source, thir
- [Creating a watch-only bitcoin wallet in Electrum](https://support.casa.io/knowledge/creating-a-watch-only-bitcoin-wallet-in-electrum): An Electrum watch-only wallet can help you verify deposit and change addresses being displayed in the Casa app.
- [Creating watch-only wallets](https://support.casa.io/knowledge/creating-watch-only-wallets)
- [Sovereign Recovery for bitcoin vaults via Electrum](https://support.casa.io/knowledge/sovereign-recovery-for-bitcoin-vaults): Sovereign Recovery is what we call the ability to create a transaction outside of the Casa app using open-source, third-
- [Sovereign Recovery for ETH Pay](https://support.casa.io/knowledge/sovereign-recovery-for-eth-pay)
- [Creating a watch-only bitcoin wallet in Specter](https://support.casa.io/knowledge/creating-a-watch-only-bitcoin-wallet-in-specter)
- [Connecting Casa vaults to your bitcoin node](https://support.casa.io/knowledge/connecting-casa-vaults-to-your-bitcoin-node): Some bitcoin wallet applications allow the user to make a direct connection from the wallet app directly to a bitcoin fu
- [Wallet Descriptors for Sovereign Recovery](https://support.casa.io/knowledge/wallet-descriptors): At Casa, we prioritize your ability to access your bitcoin under any circumstances. In rare cases, such as if Casa’s app
- [Saving your public keys](https://support.casa.io/knowledge/saving-your-public-keys)
- [Sovereign Recovery for BTC Pay](https://support.casa.io/knowledge/sovereign-recovery-for-btc-pay): In the unlikely event that Casa goes offline without warning (we don't ever plan on doing this!), and the Casa app is no
- [The Casa app and open-source software](https://support.casa.io/knowledge/the-casa-app-and-open-source-software): Open-source software is software with source code that anyone can inspect, propose changes to, and enhance.
- [Sovereign Recovery (sending funds outside of Casa)](https://support.casa.io/knowledge/sovereign-recovery-sending-funds-outside-of-casa): All Casa balances can be recovered and accessed using widely available, open-source software.
- [March 2025 Update to ETH Vault Sovereign Recovery](https://support.casa.io/knowledge/march-2025-update-to-eth-vault-sovereign-recovery): Recent updates to the Safe application now require a forked version of the Metamask Chrome extension to connect Ledger a

### Advanced Options with the 3-key vault

- [Choosing your 3-key vault setup](https://support.casa.io/knowledge/choosing-your-3-key-vault-setup)
- [Replacing your mobile key with a second hardware key](https://support.casa.io/knowledge/replacing-your-mobile-key-with-a-second-hardware-key): You can optionally replace your Casa BTC vault's mobile key with a hardware key.
- [Video support sessions for Standard members](https://support.casa.io/knowledge/video-support-sessions-for-standard-members): Standard members can purchase a 30 minute support session with an Advisor at Casa, who can assist with everything from g

### Casa app keys

- [Exporting the seed phrase for the Mobile Key or Casa Pay](https://support.casa.io/knowledge/exporting-the-seed-phrase-for-casa-pay)
- [Key rotation (replacing a key in the Casa app)](https://support.casa.io/knowledge/key-rotation-replacing-a-key-in-the-casa-app)
- [What to do after replacing a key](https://support.casa.io/knowledge/what-to-do-after-replacing-a-key)
- [Casa Pay](https://support.casa.io/knowledge/casa-pay)
- [Resetting Casa Recovery Key questions for 3-key vaults](https://support.casa.io/knowledge/resetting-casa-recovery-key-questions-for-3-key-vaults)
- [QR code backups for mobile key and Pay key](https://support.casa.io/knowledge/qr-code-backups-for-mobile-key-and-pay-key)
- [Hardware key](https://support.casa.io/knowledge/hardware-key): The Casa app allows you to use keys stored on hardware devices to sign transactions for your vault, easily and securely.
- [Mobile key](https://support.casa.io/knowledge/mobile-key): The mobile key in the Casa app makes storing a key on your mobile device (and backing it up) simple, safe, and easy.
- [Guided vs. manual recovery transactions](https://support.casa.io/knowledge/guided-vs.-manual-recovery-transactions): When a key is replaced in a Casa BTC vault, a new vault is created. As a result, funds must be transferred from the "old
- [Casa Recovery Key](https://support.casa.io/knowledge/casa-recovery-key): The Casa Recovery Key is one of the keys in your vault that is able to sign and send transactions in the Casa app.

### Casa basics

- [Supported platforms and hardware device firmware](https://support.casa.io/knowledge/supported-platforms-and-hardware-device-firmware): This page contains our recommended operating systems, browsers, and hardware wallet firmware versions. We regularly test
- [Where to download the Casa app](https://support.casa.io/knowledge/where-to-download-the-casa-app)
- [Overview of the Casa app](https://support.casa.io/knowledge/overview-of-the-casa-app)
- [What is the Casa app?](https://support.casa.io/knowledge/what-is-the-casa-app): The Casa app is an easy-to-use, advanced multisig storage solution for holding digital assets long term.
- [Subaccounts in the Casa app](https://support.casa.io/knowledge/subaccounts-in-the-casa-app)
- [Status page](https://support.casa.io/knowledge/status-page)
- [AML / KYC](https://support.casa.io/knowledge/aml-/-kyc)

### Depositing funds

- [How to withdraw from Coinbase](https://support.casa.io/knowledge/how-to-withdraw-from-coinbase)
- [How to withdraw from Kraken](https://support.casa.io/knowledge/how-to-withdraw-from-kraken)
- [How to withdraw from Binance.US](https://support.casa.io/knowledge/how-to-withdraw-from-binance.us)
- [Sweeping bitcoin paper wallets to the Casa app](https://support.casa.io/knowledge/sweeping-bitcoin-paper-wallets-to-the-casa-app): This guide will walk you through a step-by-step process to transition your funds from a paper wallet to Casa while ensur
- [Invoices in the Casa app](https://support.casa.io/knowledge/invoices-in-the-casa-app)
- [How to Receive ERC-20's](https://support.casa.io/knowledge/supported-erc-20s): This article shows users how to add funds to their Casa vault. It stresses the importance of a key health check before d
- [Whitelisting an address at an exchange](https://support.casa.io/knowledge/whitelisting-an-address-at-an-exchange)
- [Depositing (adding funds) to your Casa vault](https://support.casa.io/knowledge/depositing-adding-funds-to-your-casa-vault)

### ETH Information

- [Casa Relay fees](https://support.casa.io/knowledge/casa-relay-fees): This article focuses on using the Casa Relay as your ethereum relay, and the fees associated with it.
- [ETH Pay Wallet Relay](https://support.casa.io/knowledge/eth-pay-wallet-relay): This article focuses on how to set up ETH Pay Wallet as your Ethereum relay for your 3 or 5-key ETH vault.
- [Relay types for ethereum vaults](https://support.casa.io/knowledge/relay-types-for-ethereum-vaults)
- [ETH Pay relay fees](https://support.casa.io/knowledge/eth-pay-relay-fees): This article focuses on using the Casa ETH Pay Wallet as your ethereum relay, and the fees associated with it.

### Emergency Lockdown

- [Emergency Lockdown (Premium, Private Client, Enterprise)](https://support.casa.io/knowledge/emergency-lockdown-premium-and-private-client): Premium members, Private Clients, and Enterprise accounts have a feature in their Casa app called Emergency Lockdown.
- [Emergency Lockdown (Standard)](https://support.casa.io/knowledge/emergency-lockdown-standard)

### Premium features

- [Shared accounts](https://support.casa.io/knowledge/shared-accounts): Shared accounts are available for Premium members and Private Clients based in the U.S., U.K., Australia, or Canada (exc
- [Team signing](https://support.casa.io/knowledge/team-signing): Team signing is a feature that makes it easy for families and teams to use Casa's multisig vault technology jointly to s
- [TOTP 2-Factor Authentication (2FA) in the Casa app](https://support.casa.io/knowledge/2-factor-authentication-2fa-in-the-casa-app)
- [6th key](https://support.casa.io/knowledge/6th-key)

### Sending funds

- [Sending from specific addresses](https://support.casa.io/knowledge/sending-from-specific-addresses)
- [Testnet bitcoin (TBTC)](https://support.casa.io/knowledge/testnet-bitcoin-tbtc): In your Casa app, you'll notice that you have the option to use and interact with TBTC (Testnet bitcoin).
- [Consolidating UTXOs](https://support.casa.io/knowledge/consolidating-utxos): The Casa app allows you to consolidate your UTXOs easily, right within the app.
- [Sending funds from the Casa app](https://support.casa.io/knowledge/sending-funds-from-the-casa-app): Once you have funds in your Casa vault or Pay key, you can easily send to any address, any time.
- [How to move funds between Vaults and subaccounts in your Casa app](https://support.casa.io/knowledge/how-to-move-funds-between-wallets-in-your-casa-app): Once you have set up your Casa app, you can easily send funds between any of your Vaults and subaccounts!
- [Unconfirmed transactions from the Casa app](https://support.casa.io/knowledge/unconfirmed-transactions-from-the-casa-app): At times, the bitcoin network experiences very high transaction delays for transactions made with low fee levels.
- [Bitcoin wallet "change" addresses](https://support.casa.io/knowledge/bitcoin-wallet-change-addresses): Bitcoin vaults in the Casa app use an HD (hierarchical deterministic) key type, which generates a new address with each 
- [Testnet ethereum (TETH)](https://support.casa.io/knowledge/testnet-ethereum-teth): In your Casa app, you'll notice that you have the option to use and interact with TETH (Testnet ethereum).
- [How to Manage UTXOs in the Casa app](https://support.casa.io/knowledge/how-to-manage-utxos-in-the-casa-app): Casa allows paid members to manually manage Unspent Transaction Outputs (UTXOs) instead of using the default Auto-Select
- [Transaction memos](https://support.casa.io/knowledge/transaction-memos)
- [Saved Addresses](https://support.casa.io/knowledge/saved-addresses): Store your frequently used crypto addresses for quick access when sending Bitcoin and Ethereum

### Switching to a new phone

- [Switching between iPhone and Android](https://support.casa.io/knowledge/switching-between-iphone-and-android)
- [Transitioning to a new iPhone](https://support.casa.io/knowledge/transitioning-to-a-new-iphone): The Casa app is designed to make it easy to transition your vaults to a new mobile phone.  If possible, retain your old 
- [Transitioning to a new Android phone](https://support.casa.io/knowledge/transitioning-to-a-new-android-phone)