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copay钱包(3.转账功能报文分析)

copay钱包(3.转账功能报文分析)

作者: 沉寂之舟 | 来源:发表于2018-05-09 23:32 被阅读423次
    set_wallet.png

    建立tx报文

    Request

    Request URL: https://bws.bitpay.com/bws/api/v2/txproposals/
    Request Method: POST
    Status Code: 200

    Request Header

    x-identity: ff9c7ce1288026a4184018066bb74ccdb6b7c037d3de887b1378a81cbac1617f
    x-signature: 30440220112e0e2f0c47ad929ba96a2cf66e146508be54849b34f2ff9aa0e8e941d5febd02202cee1c2388076a9be937b788bbbccf1e59bc620421396142fbbfc19b74d04a06

    Request Body

    {
    "outputs": [{
        "toAddress": "2MtpsphTrgwZ6CmJrtZPmyUBJrKH9A8yijk",
        "amount": 200000,
        "message": null
    }],
    "feeLevel": "normal",
    "message": null,
    "excludeUnconfirmedUtxos": true,
    "dryRun": true,
    "payProUrl": null
}

    Response Body

    {
    "version": 3,
    "createdOn": 1525848972,
    "id": "0cb7f9ef-b416-4ff2-b717-7fc5e218ffd2",
    "walletId": "a887f15f-d0d5-42b5-a794-73bf92859b0e",
    "creatorId": "ff9c7ce1288026a4184018066bb74ccdb6b7c037d3de887b1378a81cbac1617f",
    "coin": "btc",
    "network": "testnet",
    "message": null,
    "payProUrl": null,
    "changeAddress": {
        "version": "1.0.0",
        "createdOn": 1525848972,
        "address": "2N9iPM2BCiZY9QhVXBvkwvVEPFA799pWPHk",
        "walletId": "a887f15f-d0d5-42b5-a794-73bf92859b0e",
        "isChange": true,
        "path": "m/1/3",
        "publicKeys": ["036b550d9c5a5b385d55a1ed2f57a3523808877fe096aeff0f24d2d847267e0052", "03fa031596a39e82c8b2d40fceb6464b68e3156566c1e1c4f579eaf67b97bb2933"],
        "coin": "btc",
        "network": "testnet",
        "type": "P2SH"
    },
    "outputs": [{
        "amount": 200000,
        "toAddress": "2MtpsphTrgwZ6CmJrtZPmyUBJrKH9A8yijk",
        "message": null
    }],
    "outputOrder": [0, 1],
    "walletM": 1,
    "walletN": 2,
    "requiredSignatures": 1,
    "requiredRejections": 1,
    "status": "temporary",
    "actions": [],
    "feeLevel": "normal",
    "feePerKb": 1000,
    "excludeUnconfirmedUtxos": true,
    "addressType": "P2SH",
    "amount": 200000,
    "inputs": [{
        "txid": "e0f2ca534e9da941ac832eedbf5ec229408a43153aafb1356246e405463b7bfb",
        "vout": 0,
        "address": "2MtDw9oCLZ8mPp63CzwMH37ubKB7K2LtoQq",
        "scriptPubKey": "a9140ab9a7e6311a5ba83d11fff29d97290528d8665987",
        "satoshis": 985800,
        "confirmations": 7176,
        "locked": false,
        "path": "m/1/1",
        "publicKeys": ["03480e89ec9a061f60a7bcb6fd2fe423ccdde9b58662273cc0b8f41f1b0c6122ae", "02727fb32888be1dbc59a0786280fe5e6f77119258891cf5280fa89bf3c14be933"]
    }],
    "inputPaths": ["m/1/1"],
    "fee": 284
}

    建立tx的交易,在pages/send/confirm页面选择发送钱包时候触发,调用的代码大致如下:

    this.updateTx(this.tx, this.wallet, { dryRun: true }).catch((err: any) => {
      this.logger.warn('Error in updateTx: ', err);
    });

    在updateTx()内部又调用了:

    this.buildTxp(tx, wallet, opts).then(() => {
            this.onGoingProcessProvider.clear();
            return resolve();
          }).catch((err: any) => {
            this.onGoingProcessProvider.clear();
            return reject(err);
          });

    最终,是由walletProvider向后台服务请求生成交易

    this.walletProvider.createTx(wallet, txp).then((ctxp: any) => {
        return resolve(ctxp);
      }).catch((err: any) => {
        this.setSendError(err);
        return reject(err);
      });

    这里最终调用了wallet-client的createTxProposal(),从请求报文可以看出,client端并没有自己去生成这转出交易,而是向server端传送了必要的output信息(接收地址,金额,备注),而是由server端根据这些配置,"代替"client端完成创建交易的工作.
    P.S.client端并没有向server传送用那个哪户转出,server端是怎么感知的呢?秘密在于Request Header的x-signature,该值是在构造wallet时候,由wallet公钥生成的,而server器端存储有wallet的信息,所以只需要传递该值,server端就能自动判断是哪个账户转出的。

    send.png

    建立tx报文(第二次)

    Request

    Request URL: https://bws.bitpay.com/bws/api/v2/txproposals/
    Request Method: POST
    Status Code: 200

    Request Header

    x-client-version: bwc-6.7.4
    x-identity: ff9c7ce1288026a4184018066bb74ccdb6b7c037d3de887b1378a81cbac1617f
    x-signature: 30440220429565307510d449e5aa39fded3c7b7322642d6f932f72273f8e680abc227f0d02201fb1bf4785815768a8d2ac98cdcfc98228d94aa84ff0733f9228cfb9682d976d

    Request Body

    {
    "outputs": [{
        "toAddress": "2MtpsphTrgwZ6CmJrtZPmyUBJrKH9A8yijk",
        "amount": 200000,
        "message": null
    }],
    "feeLevel": "normal",
    "message": null,
    "excludeUnconfirmedUtxos": true,
    "dryRun": false,
    "payProUrl": null
}

    Response Body

    {
    "version": 3,
    "createdOn": 1525848985,
    "id": "1cdb4398-03da-4180-ab5e-97499a3623d4",
    "walletId": "a887f15f-d0d5-42b5-a794-73bf92859b0e",
    "creatorId": "ff9c7ce1288026a4184018066bb74ccdb6b7c037d3de887b1378a81cbac1617f",
    "coin": "btc",
    "network": "testnet",
    "message": null,
    "payProUrl": null,
    "changeAddress": {
        "version": "1.0.0",
        "createdOn": 1525848985,
        "address": "2N9iPM2BCiZY9QhVXBvkwvVEPFA799pWPHk",
        "walletId": "a887f15f-d0d5-42b5-a794-73bf92859b0e",
        "isChange": true,
        "path": "m/1/3",
        "publicKeys": ["036b550d9c5a5b385d55a1ed2f57a3523808877fe096aeff0f24d2d847267e0052", "03fa031596a39e82c8b2d40fceb6464b68e3156566c1e1c4f579eaf67b97bb2933"],
        "coin": "btc",
        "network": "testnet",
        "type": "P2SH",
        "_id": "5af29b99bda304640dbd4ee0"
    },
    "outputs": [{
        "amount": 200000,
        "toAddress": "2MtpsphTrgwZ6CmJrtZPmyUBJrKH9A8yijk",
        "message": null
    }],
    "outputOrder": [1, 0],
    "walletM": 1,
    "walletN": 2,
    "requiredSignatures": 1,
    "requiredRejections": 1,
    "status": "temporary",
    "actions": [],
    "feeLevel": "normal",
    "feePerKb": 1000,
    "excludeUnconfirmedUtxos": true,
    "addressType": "P2SH",
    "amount": 200000,
    "inputs": [{
        "txid": "e0f2ca534e9da941ac832eedbf5ec229408a43153aafb1356246e405463b7bfb",
        "vout": 0,
        "address": "2MtDw9oCLZ8mPp63CzwMH37ubKB7K2LtoQq",
        "scriptPubKey": "a9140ab9a7e6311a5ba83d11fff29d97290528d8665987",
        "satoshis": 985800,
        "confirmations": 7176,
        "locked": false,
        "path": "m/1/1",
        "publicKeys": ["03480e89ec9a061f60a7bcb6fd2fe423ccdde9b58662273cc0b8f41f1b0c6122ae", "02727fb32888be1dbc59a0786280fe5e6f77119258891cf5280fa89bf3c14be933"]
    }],
    "inputPaths": ["m/1/1"],
    "fee": 284
}

    在点击发送按钮后，

     public approve(tx: any, wallet: any): void {...
 }

    在approve方法中,client会再次向server端申请create一次交易，当然，server还是会去生成一个
    未用的hd地址作为change(由于第一次的没有真实用,地址还是和第一次一样的).但是由于创建的时间已经不同了,所以生成的tx-id是完全不同的.

    confrim_send.png

    推送tx报文

    Request

    Request URL: https://bws.bitpay.com/bws/api/v1/txproposals/1cdb4398-03da-4180-ab5e-97499a3623d4/publish/
    Request Method: POST
    Status Code: 200

    Request Header

    x-identity: ff9c7ce1288026a4184018066bb74ccdb6b7c037d3de887b1378a81cbac1617f
    x-signature: 30440220642fc81dfac718c3c382e204574ca5bc6c45742d07cd94465d5435cae2bc02d40220546d0b19bb2663f9fdfbd6ac4a836aeecb85246d82c971cc36603ccc9bcdd244

    Request Body

    {
    "proposalSignature": "3045022100c88e1997e6f7e3b2c7a57f90c561b91888475fc9d83c9b562a4c10f8d2b2589f02206d0961ddef78654ad012b49ffbb97d370b578c51c4fbe9adeadbe2257cfeb256"
}

    Response Body

    {
    "version": 3,
    "createdOn": 1525848985,
    "id": "1cdb4398-03da-4180-ab5e-97499a3623d4",
    "walletId": "a887f15f-d0d5-42b5-a794-73bf92859b0e",
    "creatorId": "ff9c7ce1288026a4184018066bb74ccdb6b7c037d3de887b1378a81cbac1617f",
    "coin": "btc",
    "network": "testnet",
    "outputs": [{
        "amount": 200000,
        "toAddress": "2MtpsphTrgwZ6CmJrtZPmyUBJrKH9A8yijk",
        "message": null
    }],
    "amount": 200000,
    "message": null,
    "payProUrl": null,
    "changeAddress": {
        "version": "1.0.0",
        "createdOn": 1525848985,
        "address": "2N9iPM2BCiZY9QhVXBvkwvVEPFA799pWPHk",
        "walletId": "a887f15f-d0d5-42b5-a794-73bf92859b0e",
        "isChange": true,
        "path": "m/1/3",
        "publicKeys": ["036b550d9c5a5b385d55a1ed2f57a3523808877fe096aeff0f24d2d847267e0052", "03fa031596a39e82c8b2d40fceb6464b68e3156566c1e1c4f579eaf67b97bb2933"],
        "coin": "btc",
        "network": "testnet",
        "type": "P2SH",
        "hasActivity": null,
        "_id": "5af29b99bda304640dbd4ee0"
    },
    "inputs": [{
        "txid": "e0f2ca534e9da941ac832eedbf5ec229408a43153aafb1356246e405463b7bfb",
        "vout": 0,
        "address": "2MtDw9oCLZ8mPp63CzwMH37ubKB7K2LtoQq",
        "scriptPubKey": "a9140ab9a7e6311a5ba83d11fff29d97290528d8665987",
        "satoshis": 985800,
        "confirmations": 7176,
        "locked": false,
        "path": "m/1/1",
        "publicKeys": ["03480e89ec9a061f60a7bcb6fd2fe423ccdde9b58662273cc0b8f41f1b0c6122ae", "02727fb32888be1dbc59a0786280fe5e6f77119258891cf5280fa89bf3c14be933"]
    }],
    "walletM": 1,
    "walletN": 2,
    "requiredSignatures": 1,
    "requiredRejections": 1,
    "status": "pending",
    "inputPaths": ["m/1/1"],
    "actions": [],
    "outputOrder": [1, 0],
    "fee": 284,
    "feeLevel": "normal",
    "feePerKb": 1000,
    "excludeUnconfirmedUtxos": true,
    "addressType": "P2SH",
    "customData": null,
    "proposalSignature": "3045022100c88e1997e6f7e3b2c7a57f90c561b91888475fc9d83c9b562a4c10f8d2b2589f02206d0961ddef78654ad012b49ffbb97d370b578c51c4fbe9adeadbe2257cfeb256",
    "derivationStrategy": "BIP44",
    "creatorName": "{\"iv\":\"0Tx0HkyTJdQpsgXx2QAFoQ==\",\"v\":1,\"iter\":1,\"ks\":128,\"ts\":64,\"mode\":\"ccm\",\"adata\":\"\",\"cipher\":\"aes\",\"ct\":\"zdicqfgF5a0ccpAc/jMjR/UB\"}"
}

    在点击发送确认按钮后,client端就开始真正的处理这个交易了,具体的调用过程为
    approve()方法在调用this.popupProvider.ionicConfirm()弹出确认框后,构造并调用了自己"刚刚"声明的publishAndSign()方法,其内部则调用了walletProvider的publishAndSign()方法实现.

          let publishAndSign = (): void => {
        if (!wallet.canSign() && !wallet.isPrivKeyExternal()) {
          this.logger.info('No signing proposal: No private key');
          this.onGoingProcessProvider.set('sendingTx');
          this.walletProvider.onlyPublish(wallet, txp).then(() => {
            this.onGoingProcessProvider.clear();
            this.openFinishModal(true);
          }).catch((err: any) => {
            this.onGoingProcessProvider.clear();
            this.setSendError(err);
          });
          return;
        }

        this.walletProvider.publishAndSign(wallet, txp).then((txp: any) => {
          this.onGoingProcessProvider.clear();
          if (this.config.confirmedTxsNotifications && this.config.confirmedTxsNotifications.enabled) {
            this.txConfirmNotificationProvider.subscribe(wallet, {
              txid: txp.txid
            });
          }
          this.openFinishModal();
        }).catch((err: any) => {
          this.onGoingProcessProvider.clear();
          this.setSendError(err);
          return;
        });
      };
      
this.walletProvider.publishAndSign(wallet, txp)

    publishAndSign()可是一气呵成完成了三个步骤,

    // 发布:
wallet.publishTxProposal(({txp},...)
// 签名:
wallet.signTxProposal(txp, password, (err: any, signedTxp: any)
// 广播:
wallet.broadcastTxProposal(txp, (err: any, broadcastedTxp: any, memo: any)

    由于tx本身就是server端构造的,所以client仅需要在url中指出所对应的tx-id,并补充改步骤需要的信息即可.

    签名tx报文

    Request

    Request URL: https://bws.bitpay.com/bws/api/v1/txproposals/1cdb4398-03da-4180-ab5e-97499a3623d4/signatures/
    Request Method: POST
    Status Code: 200

    Request Header

    x-identity: ff9c7ce1288026a4184018066bb74ccdb6b7c037d3de887b1378a81cbac1617f
    x-signature: 304402203cba7614d6aa2d8fc56ae64c626073e67f53d6ec0cd40a7747517a503af2435a02203117e45c6f7c2c65ccdc7e7f7d86557ab6e6ab866e18493cad73814085b9c955

    Request Body

    {
    "signatures": ["3044022047ea35be8583908a9994a7144642b628edaad70ad4c4fcb1a36056db55a40b9a022046a5bc8fb29de4c78cd4fc80ae59b27b3a240bbc10fc39e3fd422183d4f5e2e7"]
}

    Response Body

    {
    "version": 3,
    "createdOn": 1525848985,
    "id": "1cdb4398-03da-4180-ab5e-97499a3623d4",
    "walletId": "a887f15f-d0d5-42b5-a794-73bf92859b0e",
    "creatorId": "ff9c7ce1288026a4184018066bb74ccdb6b7c037d3de887b1378a81cbac1617f",
    "coin": "btc",
    "network": "testnet",
    "outputs": [{
        "amount": 200000,
        "toAddress": "2MtpsphTrgwZ6CmJrtZPmyUBJrKH9A8yijk",
        "message": null
    }],
    "amount": 200000,
    "message": null,
    "payProUrl": null,
    "changeAddress": {
        "version": "1.0.0",
        "createdOn": 1525848985,
        "address": "2N9iPM2BCiZY9QhVXBvkwvVEPFA799pWPHk",
        "walletId": "a887f15f-d0d5-42b5-a794-73bf92859b0e",
        "isChange": true,
        "path": "m/1/3",
        "publicKeys": ["036b550d9c5a5b385d55a1ed2f57a3523808877fe096aeff0f24d2d847267e0052", "03fa031596a39e82c8b2d40fceb6464b68e3156566c1e1c4f579eaf67b97bb2933"],
        "coin": "btc",
        "network": "testnet",
        "type": "P2SH",
        "hasActivity": null,
        "_id": "5af29b99bda304640dbd4ee0"
    },
    "inputs": [{
        "txid": "e0f2ca534e9da941ac832eedbf5ec229408a43153aafb1356246e405463b7bfb",
        "vout": 0,
        "address": "2MtDw9oCLZ8mPp63CzwMH37ubKB7K2LtoQq",
        "scriptPubKey": "a9140ab9a7e6311a5ba83d11fff29d97290528d8665987",
        "satoshis": 985800,
        "confirmations": 7176,
        "locked": false,
        "path": "m/1/1",
        "publicKeys": ["03480e89ec9a061f60a7bcb6fd2fe423ccdde9b58662273cc0b8f41f1b0c6122ae", "02727fb32888be1dbc59a0786280fe5e6f77119258891cf5280fa89bf3c14be933"]
    }],
    "walletM": 1,
    "walletN": 2,
    "requiredSignatures": 1,
    "requiredRejections": 1,
    "status": "accepted",
    "txid": "9bd83411a7849f1546897472ac55e30df24c3700f7cc50b8e44a50b5885299ac",
    "broadcastedOn": null,
    "inputPaths": ["m/1/1"],
    "actions": [{
        "version": "1.0.0",
        "createdOn": 1525849013,
        "copayerId": "ff9c7ce1288026a4184018066bb74ccdb6b7c037d3de887b1378a81cbac1617f",
        "type": "accept",
        "signatures": ["3044022047ea35be8583908a9994a7144642b628edaad70ad4c4fcb1a36056db55a40b9a022046a5bc8fb29de4c78cd4fc80ae59b27b3a240bbc10fc39e3fd422183d4f5e2e7"],
        "xpub": "tpubDDTZjjnaAsDHaD2CNQfsEKSmerbKjp9U5xXUj1UQCWnGLchBFMPM12bWf3izdTnocMA8cJXxwuYa9r8RyrK9GAhemaBEfGwDUiUEEA16rF5",
        "comment": null
    }],
    "outputOrder": [1, 0],
    "fee": 284,
    "feeLevel": "normal",
    "feePerKb": 1000,
    "excludeUnconfirmedUtxos": true,
    "addressType": "P2SH",
    "customData": null,
    "proposalSignature": "3045022100c88e1997e6f7e3b2c7a57f90c561b91888475fc9d83c9b562a4c10f8d2b2589f02206d0961ddef78654ad012b49ffbb97d370b578c51c4fbe9adeadbe2257cfeb256",
    "proposalSignaturePubKey": null,
    "proposalSignaturePubKeySig": null,
    "derivationStrategy": "BIP44",
    "creatorName": "{\"iv\":\"0Tx0HkyTJdQpsgXx2QAFoQ==\",\"v\":1,\"iter\":1,\"ks\":128,\"ts\":64,\"mode\":\"ccm\",\"adata\":\"\",\"cipher\":\"aes\",\"ct\":\"zdicqfgF5a0ccpAc/jMjR/UB\"}",
    "raw": "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"
}

    广播tx报文

    Request

    Request URL: https://bws.bitpay.com/bws/api/v1/txproposals/1cdb4398-03da-4180-ab5e-97499a3623d4/broadcast/
    Request Method: POST
    Status Code: 200

    Request Header

    x-identity: ff9c7ce1288026a4184018066bb74ccdb6b7c037d3de887b1378a81cbac1617f
    x-signature: 3044022035e6368be6e4fd075d1a13a2d77dec90735fa76d7a07e7580456f4c01632fb060220062f57175d286c2927363aae5bfd1af6fce812c4f039e4f63655425241341225

    Request Body

    {}

    Response Body

    {
    "version": 3,
    "createdOn": 1525848985,
    "id": "1cdb4398-03da-4180-ab5e-97499a3623d4",
    "walletId": "a887f15f-d0d5-42b5-a794-73bf92859b0e",
    "creatorId": "ff9c7ce1288026a4184018066bb74ccdb6b7c037d3de887b1378a81cbac1617f",
    "coin": "btc",
    "network": "testnet",
    "outputs": [{
        "amount": 200000,
        "toAddress": "2MtpsphTrgwZ6CmJrtZPmyUBJrKH9A8yijk",
        "message": null
    }],
    "amount": 200000,
    "message": null,
    "payProUrl": null,
    "changeAddress": {
        "version": "1.0.0",
        "createdOn": 1525848985,
        "address": "2N9iPM2BCiZY9QhVXBvkwvVEPFA799pWPHk",
        "walletId": "a887f15f-d0d5-42b5-a794-73bf92859b0e",
        "isChange": true,
        "path": "m/1/3",
        "publicKeys": ["036b550d9c5a5b385d55a1ed2f57a3523808877fe096aeff0f24d2d847267e0052", "03fa031596a39e82c8b2d40fceb6464b68e3156566c1e1c4f579eaf67b97bb2933"],
        "coin": "btc",
        "network": "testnet",
        "type": "P2SH",
        "hasActivity": null,
        "_id": "5af29b99bda304640dbd4ee0"
    },
    "inputs": [{
        "txid": "e0f2ca534e9da941ac832eedbf5ec229408a43153aafb1356246e405463b7bfb",
        "vout": 0,
        "address": "2MtDw9oCLZ8mPp63CzwMH37ubKB7K2LtoQq",
        "scriptPubKey": "a9140ab9a7e6311a5ba83d11fff29d97290528d8665987",
        "satoshis": 985800,
        "confirmations": 7176,
        "locked": false,
        "path": "m/1/1",
        "publicKeys": ["03480e89ec9a061f60a7bcb6fd2fe423ccdde9b58662273cc0b8f41f1b0c6122ae", "02727fb32888be1dbc59a0786280fe5e6f77119258891cf5280fa89bf3c14be933"]
    }],
    "walletM": 1,
    "walletN": 2,
    "requiredSignatures": 1,
    "requiredRejections": 1,
    "status": "broadcasted",
    "txid": "9bd83411a7849f1546897472ac55e30df24c3700f7cc50b8e44a50b5885299ac",
    "broadcastedOn": 1525849014,
    "inputPaths": ["m/1/1"],
    "actions": [{
        "version": "1.0.0",
        "createdOn": 1525849013,
        "copayerId": "ff9c7ce1288026a4184018066bb74ccdb6b7c037d3de887b1378a81cbac1617f",
        "type": "accept",
        "signatures": ["3044022047ea35be8583908a9994a7144642b628edaad70ad4c4fcb1a36056db55a40b9a022046a5bc8fb29de4c78cd4fc80ae59b27b3a240bbc10fc39e3fd422183d4f5e2e7"],
        "xpub": "tpubDDTZjjnaAsDHaD2CNQfsEKSmerbKjp9U5xXUj1UQCWnGLchBFMPM12bWf3izdTnocMA8cJXxwuYa9r8RyrK9GAhemaBEfGwDUiUEEA16rF5",
        "comment": null,
        "copayerName": "{\"iv\":\"0Tx0HkyTJdQpsgXx2QAFoQ==\",\"v\":1,\"iter\":1,\"ks\":128,\"ts\":64,\"mode\":\"ccm\",\"adata\":\"\",\"cipher\":\"aes\",\"ct\":\"zdicqfgF5a0ccpAc/jMjR/UB\"}"
    }],
    "outputOrder": [1, 0],
    "fee": 284,
    "feeLevel": "normal",
    "feePerKb": 1000,
    "excludeUnconfirmedUtxos": true,
    "addressType": "P2SH",
    "customData": null,
    "proposalSignature": "3045022100c88e1997e6f7e3b2c7a57f90c561b91888475fc9d83c9b562a4c10f8d2b2589f02206d0961ddef78654ad012b49ffbb97d370b578c51c4fbe9adeadbe2257cfeb256",
    "proposalSignaturePubKey": null,
    "proposalSignaturePubKeySig": null,
    "derivationStrategy": "BIP44",
    "creatorName": "{\"iv\":\"0Tx0HkyTJdQpsgXx2QAFoQ==\",\"v\":1,\"iter\":1,\"ks\":128,\"ts\":64,\"mode\":\"ccm\",\"adata\":\"\",\"cipher\":\"aes\",\"ct\":\"zdicqfgF5a0ccpAc/jMjR/UB\"}",
    "raw": "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"
}

    查询tx

    Request

    Request URL: https://bws.bitpay.com/bws/api/v1/txconfirmations/
    Request Method: POST
    Status Code: 200

    Request Header

    x-identity: ff9c7ce1288026a4184018066bb74ccdb6b7c037d3de887b1378a81cbac1617f
    x-signature: 304402203a6a23cd5dcbbe932bea06228bd0695c9939d65e7df65a9b68c603d492e7cd0502201be819417c6385062b06a337eaadddd671c90c478ed07f75ddcd82d29e85d292

    Request Body

    {
    "txid": "9bd83411a7849f1546897472ac55e30df24c3700f7cc50b8e44a50b5885299ac"
}

    Response Body

    {
    "ok": 1,
    "nModified": 0,
    "n": 1,
    "upserted": [{
        "index": 0,
        "_id": "5af29bb73834807db7f1b6e5"
    }],
    "lastOp": "6553471618058813445",
    "electionId": "5ac12a1d3834807db7d38cc1"
}

    查询请求是在完成publishAndSign之后,通过

    this.txConfirmNotificationProvider.subscribe(wallet, {
              txid: txp.txid
            });

    完成调用请求的.
    这里调用了client的

    client.txConfirmationSubscribe(opts, (err: any, res: any)

    从而完成交易确认的订阅.

    总结一下

    总的来说,copay的交易建立,签名和广播都十分的依赖于server端,这大概与其自身实现的利用server完成多签交易生成,感知,签名流程有关,只有把一个多签交易拆分能几个不完整的子交易,并在网络上得以传播才能实现.
    目前,由于client也完整的引用了bitcore-lib,考虑在获取足够多的utxo前提下,在client端完成交易的生成,然后推送给client完成广播.

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