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bitcore-wallet-service-rapture

v2.4.0

Published

A service for Mutisig HD Rapture Wallets

Downloads

3

Readme

bitcore-wallet-service

NPM Package Build Status Coverage Status

A Multisig HD Bitcore Wallet Service.

Description

Bitcore Wallet Service facilitates multisig HD wallets creation and operation through a (hopefully) simple and intuitive REST API.

BWS can usually be installed within minutes and accommodates all the needed infrastructure for peers in a multisig wallet to communicate and operate – with minimum server trust.

See Bitcore-wallet-client for the official client library that communicates to BWS and verifies its response. Also check Bitcore-wallet for a simple CLI wallet implementation that relies on BWS.

BWS is been used in production enviroments for Copay Wallet, Bitpay App wallet and others.

More about BWS at https://blog.bitpay.com/announcing-the-bitcore-wallet-suite/

Getting Started

 git clone https://github.com/RaptureCore/bitcore-wallet-service-rapture.git
 cd bitcore-wallet-service-rapture && npm start

This will launch the BWS service (with default settings) at http://localhost:3232/bws/api.

BWS needs mongoDB. You can configure the connection at config.js

BWS supports SSL and Clustering. For a detailed guide on installing BWS with extra features see Installing BWS.

BWS uses by default a Request Rate Limitation to CreateWallet endpoint. If you need to modify it, check defaults.js' Defaults.RateLimit

Using BWS with PM2

BWS can be used with PM2 with the provided app.js script:

  pm2 start app.js --name "bitcoin-wallet-service"

Security Considerations

  • Private keys are never sent to BWS. Copayers store them locally.
  • Extended public keys are stored on BWS. This allows BWS to easily check wallet balance, send offline notifications to copayers, etc.
  • During wallet creation, the initial copayer creates a wallet secret that contains a private key. All copayers need to prove they have the secret by signing their information with this private key when joining the wallet. The secret should be shared using secured channels.
  • A copayer could join the wallet more than once, and there is no mechanism to prevent this. See wallet's confirm command, for a method for confirming copayers.
  • All BWS responses are verified:
  • Addresses and change addresses are derived independently and locally by the copayers from their local data.
  • TX Proposals templates are signed by copayers and verified by others, so the BWS cannot create or tamper with them.

Using SSL

You can add your certificates at the config.js using:

   https: true,
   privateKeyFile: 'private.pem',
   certificateFile: 'cert.pem',
  ////// The following is only for certs which are not
  ////// trusted by nodejs 'https' by default
  ////// CAs like Verisign do not require this
  // CAinter1: '', // ex. 'COMODORSADomainValidationSecureServerCA.crt'
  // CAinter2: '', // ex. 'COMODORSAAddTrustCA.crt'
  // CAroot: '', // ex. 'AddTrustExternalCARoot.crt'

@dabura667 made a report about how to use letsencrypt with BWS: https://github.com/bitpay/bitcore-wallet-service/issues/423

REST API

Note: all currency amounts are in units of satoshis (1/100,000,000 of a bitcoin).

Authentication

In order to access a wallet, clients are required to send the headers:

  x-identity
  x-signature

Identity is the Peer-ID, this will identify the peer and its wallet. Signature is the current request signature, using requestSigningKey, the m/1/1 derivative of the Extended Private Key.

See Bitcore Wallet Client for implementation details.

GET Endpoints

/v1/wallets/: Get wallet information

Returns:

/v1/txhistory/: Get Wallet's transaction history

Optional Arguments:

  • skip: Records to skip from the result (defaults to 0)
  • limit: Total number of records to return (return all available records if not specified).

Returns:

  • History of incoming and outgoing transactions of the wallet. The list is paginated using the skip & limit params. Each item has the following fields:

  • action ('sent', 'received', 'moved')

  • amount

  • fees

  • time

  • addressTo

  • confirmations

  • proposalId

  • creatorName

  • message

  • actions array ['createdOn', 'type', 'copayerId', 'copayerName', 'comment']

/v1/txproposals/: Get Wallet's pending transaction proposals and their status Returns:

/v1/addresses/: Get Wallet's main addresses (does not include change addresses)

Returns:

  • List of Addresses object: (https://github.com/bitpay/bitcore-wallet-service/blob/master/lib/model/address.js)). This call is mainly provided so the client check this addresses for incoming transactions (using a service like Insight

/v1/balance/: Get Wallet's balance

Returns:

  • totalAmount: Wallet's total balance
  • lockedAmount: Current balance of outstanding transaction proposals, that cannot be used on new transactions.
  • availableAmount: Funds available for new proposals.
  • totalConfirmedAmount: Same as totalAmount for confirmed UTXOs only.
  • lockedConfirmedAmount: Same as lockedAmount for confirmed UTXOs only.
  • availableConfirmedAmount: Same as availableAmount for confirmed UTXOs only.
  • byAddress array ['address', 'path', 'amount']: A list of addresses holding funds.
  • totalKbToSendMax: An estimation of the number of KiB required to include all available UTXOs in a tx (including unconfirmed).

/v1/txnotes/:txid: Get user notes associated to the specified transaction. Returns:

  • The note associated to the txid as a string.

/v1/fiatrates/:code: Get the fiat rate for the specified ISO 4217 code. Optional Arguments:

  • provider: An identifier representing the source of the rates.
  • ts: The timestamp for the fiat rate (defaults to now).

Returns:

  • The fiat exchange rate.

POST Endpoints

/v1/wallets/: Create a new Wallet

Required Arguments:

  • name: Name of the wallet
  • m: Number of required peers to sign transactions
  • n: Number of total peers on the wallet
  • pubKey: Wallet Creation Public key to check joining copayer's signatures (the private key is unknown by BWS and must be communicated by the creator peer to other peers).

Returns:

  • walletId: Id of the new created wallet

/v1/wallets/:id/copayers/: Join a Wallet in creation

Required Arguments:

  • walletId: Id of the wallet to join
  • name: Copayer Name
  • xPubKey - Extended Public Key for this copayer.
  • requestPubKey - Public Key used to check requests from this copayer.
  • copayerSignature - Signature used by other copayers to verify that the copayer joining knows the wallet secret.

Returns:

  • copayerId: Assigned ID of the copayer (to be used on x-identity header)
  • wallet: Object with wallet's information

/v1/txproposals/: Add a new transaction proposal

Required Arguments:

  • toAddress: RCPT Bitcoin address.
  • amount: amount (in satoshis) of the mount proposed to be transfered
  • proposalsSignature: Signature of the proposal by the creator peer, using proposalSigningKey.
  • (opt) message: Encrypted private message to peers.
  • (opt) payProUrl: Paypro URL for peers to verify TX
  • (opt) feePerKb: Use an alternative fee per KB for this TX.
  • (opt) excludeUnconfirmedUtxos: Do not use UTXOs of unconfirmed transactions as inputs for this TX.

Returns:

/v3/addresses/: Request a new main address from wallet . (creates an address on normal conditions)

Returns:

  • Address object: (https://github.com/bitpay/bitcore-wallet-service/blob/master/lib/model/address.js)). Note that path is returned so client can derive the address independently and check server's response.

/v1/txproposals/:id/signatures/: Sign a transaction proposal

Required Arguments:

  • signatures: All Transaction's input signatures, in order of appearance.

Returns:

/v1/txproposals/:id/broadcast/: Broadcast a transaction proposal

Returns:

/v1/txproposals/:id/rejections: Reject a transaction proposal

Returns:

/v1/addresses/scan: Start an address scan process looking for activity.

Optional Arguments:

  • includeCopayerBranches: Scan all copayer branches following BIP45 recommendation (defaults to false).

/v1/txconfirmations/: Subscribe to receive push notifications when the specified transaction gets confirmed. Required Arguments:

  • txid: The transaction to subscribe to.

PUT Endpoints

/v1/txnotes/:txid/: Modify a note for a tx.

DELETE Endpoints

/v1/txproposals/:id/: Deletes a transaction proposal. Only the creator can delete a TX Proposal, and only if it has no other signatures or rejections

Returns:

/v1/txconfirmations/:txid: Unsubscribe from transaction txid and no longer listen to its confirmation.

Push Notifications

Recomended to complete config.js file:

POST Endpoints

/v1/pushnotifications/subscriptions/: Adds subscriptions for push notifications service at database.

DELETE Endpoints

/v2/pushnotifications/subscriptions/: Remove subscriptions for push notifications service from database.