Bitcoin Stack Exchange
Bitcoin Stack Exchange

Questions tagged [copay]

Copay is an easy-to-use, open-source, multiplatform, multisignature, secure bitcoin wallet platform for both individuals and companies. Copay uses Bitcore Wallet Service (BWS) for peer synchronization and network interfacing.

Copay is an easy-to-use, open-source, multiplatform, multisignature, secure bitcoin wallet platform for both individuals and companies. Copay uses Bitcore Wallet Service (BWS) for peer synchronization and network interfacing.

Main features: 

• Multiple wallet creation and management in-app
• Intuitive, multisignature security for personal or shared wallets
• Easy spending proposal flow for shared wallets and group payments
• BIP32 Hierarchical deterministic (HD) address generation and wallet backups
• Device-based security: all private keys are stored locally, not in the cloud
• Support for Bitcoin testnet wallets
• Synchronous access across all major mobile and desktop platforms
• Payment protocol (BIP70-BIP73) support: easily-identifiable payment requests and verifiable, secure bitcoin payments
• Support for over 150 currency pricing options and unit denomination in BTC or bits
• Mnemonic (BIP39) support for wallet backups
• Paper wallet sweep support (BIP38)
• Hardware wallet support (Trezor and Ledger) (only in Chrome App version)
• Email notifications for payments and transfers
• Push notifications (only available for iOS and Android versions)
• Customizable wallet naming and background colors
• Multiple languages supported

Available for iOS, Android, Windows Phone, Chrome App, Linux, Windows and macOS devices.

72 questions
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What is the origin of insecure 64-bit nonces in signatures in the Bitcoin chain?

In Biased Nonce Sense: Lattice Attacks against Weak ECDSA Signatures in Cryptocurrencies Joachim Breitner and Nadia Heninger use a lattice based algorithm to recover private keys from signatures in the Bitcoin chain that were produced by insecure…
G. Maxwell
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What wallets are affected by the NPM package vulnerability?

Recently, a vulnerability was found in an open-source project used by some bitcoin wallet software (such as CoPay and BitPay). Are there any other wallets known to be affected by this vulnerability? If I am a user of this software, what steps can…
chytrik
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Bitcoin Protocol OP_RETURN + Omni USDT Tether + CoPay Multisig Help

I have been asked to recover some tether that have been sent to the wrong address... Sitting on the blockchain in a multisig copay account. I have written small php command line tools to reproduce the case and learn more about how Bitcoin works. I…
Grégory Saive - evias
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Bitcoins transaction is completed but I don't get the coins

I got the bitcoins but it's not getting added to my wallet, I even got the email etc. and it shows up but see this Transaction is not available at this time
Yuma Yamamoto
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I LOST MY FUND EVEN ALREADY IMPORT WALLET

I cannot recover my fund in Copay Wallet. I done import wallet using my back up 12 phrase word but yet still cannot recover. Why?
Isqan
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missing USDT transaction in Copay or Bitpay Wallets

I have a missing transaction, a guy sent me a bitcoins USDT, on his side we can see the money went out and the transaction is confirmed, on my side the money are not at my wallet, what I can do, here is the hash…
Deyan
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Copay wallet no longer available on the Google Play store

This URL where the Copay wallet used to be now just shows "We're sorry, the requested URL was not found on this server." Why was it removed? Was there a security issue? Is this going to affect the app installed on my phone?
Can
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How can I access the mnemonic in the mobile copay wallet?

I was encourage to download copay in my phone so that someone could give me 0.001 BTC. In that process I did not write down the 12 words. Is there a way to access them in the app? Thanks.
Guest
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Bitcoin Cash to CoPay Bitcoin Wallet - How to Recover?

We have an eCommerce website and a customer is purchasing an item using Bitcoin. We provided the customer with our business Copay Wallet address, however the customer sent "Bitcoin Cash" - how can he, or we, recover his payment? The Copay wallet…
Quantum
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How often do I need to backup my Copay wallet? Is a new backup after every transaction necessary?

Is it true that I need to make a backup after each time an amount was sent from a wallet by writing down the 12 words? Unfortunately, I had Copay and saved only before the transaction was sent, and now I can not get back the remaining amount.
János
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QR code on my phone looks different

I just set up a personal wallet, and the QR code on my phone, looks different from the QR code that blockchain.info shows. When I scan, the code on blockchain.info, I get the same address. I thought the QR codes were Unique. what is going on? This…
j0h
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What's the POST endpoint to broadcast a transaction in copay's server?

AFAIU, copay's server implementation is bitcore-wallet-service. From its README, I can deduce that a multi-sig wallet will use the /v1/txproposals/ endpoint to create a new transaction proposal that the other co-signers will receive. But, if the…
knocte
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How multi-signature wallets comunicate with each other?

I wonder how multi-signature wallets communicate with each other? My favorite wallet is copay. How do they communicate with each other before payment is done? How is privacy handled between each multi-sig device?
Comodore
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how private key is stored?

How is the private key or master seed managed on iOS or Android? In copay, using Secure Enclave? And as for Android device how is the private key or master seed managed?
Sotaro Ichiyama
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Install Copay on Windows 7 64 bit desktop

I have windows 7 64 bit. I need more information. Step by step, please. I have reviewed the previous answers but do not understand: (New copay on Windows 7) 1) Exactly what to download from where 2) How to install/ run the download The windows app…
user90604
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