`generateblock` RPC Not Collecting Transaction Fees

vforvilela commented at 10:08 pm on January 18, 2025: none

Is there an existing issue for this?

I have searched the existing issues

Current behaviour

The generateblock RPC does not properly collect transaction fees when creating a block. Instead of including the fees in the block reward, the block is created with only the block subsidy, leaving out the fees from transactions included in the block.

Expected behaviour

The block reward should include both the block subsidy and the transaction fees from all transactions included in the block.

Steps to reproduce

Start a Bitcoin Core node in regtest mode.
Generate 101 blocks to fund a wallet.
Create a transaction with a fee.
Call the generateblock RPC with the transaction above.
Inspect the resulting block to confirm that the block reward does not include the fee.

Relevant log output

0$ bitcoin-cli -regtest getblock 05fe640f818d46b9ba931d8f4179562a0d042008abe4b9ed98072d0bca449f30 2`

  0{
  1  "hash": "05fe640f818d46b9ba931d8f4179562a0d042008abe4b9ed98072d0bca449f30",
  2  "confirmations": 1,
  3  "height": 102,
  4  "version": 536870912,
  5  "versionHex": "20000000",
  6  "merkleroot": "ac0b08a969181b07d5d08a1dedce2aeeea2d30f050b837cd4a90b73846875ecc",
  7  "time": 1737237217,
  8  "mediantime": 1737237198,
  9  "nonce": 5,
 10  "bits": "207fffff",
 11  "difficulty": 4.656542373906925e-10,
 12  "chainwork": "00000000000000000000000000000000000000000000000000000000000000ce",
 13  "nTx": 2,
 14  "previousblockhash": "38a851e21e26dc54159198e8eda06c0fb94debb1316dd504b74bb5114f9273fe",
 15  "strippedsize": 295,
 16  "size": 440,
 17  "weight": 1325,
 18  "tx": [
 19    {
 20      "txid": "065d28a4a15b90fc052b613e5db7540f1e5164159ca17fe88f27cfdb857c811d",
 21      "hash": "ad545fbff90d4ddf126dc835bec6f50fc51a7e72c6b6c9f16bf240e464d68810",
 22      "version": 2,
 23      "size": 168,
 24      "vsize": 141,
 25      "weight": 564,
 26      "locktime": 0,
 27      "vin": [
 28        {
 29          "coinbase": "016600",
 30          "txinwitness": [
 31            "0000000000000000000000000000000000000000000000000000000000000000"
 32          ],
 33          "sequence": 4294967295
 34        }
 35      ],
 36      "vout": [
 37        {
 38          "value": 50.00000000,
 39          "n": 0,
 40          "scriptPubKey": {
 41            "asm": "0 a41424b6995beeaef7cbc9a4ebcf91b71793983d",
 42            "desc": "addr(bcrt1q5s2zfd5et0h2aa7texjwhnu3kute8xpaqgz39r)#qxc0s854",
 43            "hex": "0014a41424b6995beeaef7cbc9a4ebcf91b71793983d",
 44            "address": "bcrt1q5s2zfd5et0h2aa7texjwhnu3kute8xpaqgz39r",
 45            "type": "witness_v0_keyhash"
 46          }
 47        },
 48        {
 49          "value": 0.00000000,
 50          "n": 1,
 51          "scriptPubKey": {
 52            "asm": "OP_RETURN aa21a9ed3dde4089261cfff17418209ef46ed64df4d49543df0daeafc6fc41ce09766229",
 53            "desc": "raw(6a24aa21a9ed3dde4089261cfff17418209ef46ed64df4d49543df0daeafc6fc41ce09766229)#hu88gsq4",
 54            "hex": "6a24aa21a9ed3dde4089261cfff17418209ef46ed64df4d49543df0daeafc6fc41ce09766229",
 55            "type": "nulldata"
 56          }
 57        }
 58      ],
 59      "hex": "020000000001010000000000000000000000000000000000000000000000000000000000000000ffffffff03016600ffffffff0200f2052a01000000160014a41424b6995beeaef7cbc9a4ebcf91b71793983d0000000000000000266a24aa21a9ed3dde4089261cfff17418209ef46ed64df4d49543df0daeafc6fc41ce097662290120000000000000000000000000000000000000000000000000000000000000000000000000"
 60    },
 61    {
 62      "txid": "f66ffdec54562ec07aac05c2c25d91937a0059ffebf802705be31f59be76f3e9",
 63      "hash": "567df936509935ee19841e9b717668cb6d419eeaba41f9c05ab0351a56c3293f",
 64      "version": 2,
 65      "size": 191,
 66      "vsize": 110,
 67      "weight": 437,
 68      "locktime": 0,
 69      "vin": [
 70        {
 71          "txid": "f5dc14e8b10b94b038ce9d6a789a12e3428e5acfd07de7ea461762f6c23f267e",
 72          "vout": 0,
 73          "scriptSig": {
 74            "asm": "",
 75            "hex": ""
 76          },
 77          "txinwitness": [
 78            "304402206b532fdf2ca4111872a8c8c322ab68e21e079253862c3c95cf86d18efcdb143d022039514e377cbac97c3ec1459aec7c9584a56c1c527588600c0435483c7b96535c01",
 79            "03fc3c5d0caa493055f57d5f3098b42555543a5219519ab90a22b20ddea49f1515"
 80          ],
 81          "sequence": 4294967293
 82        }
 83      ],
 84      "vout": [
 85        {
 86          "value": 39.99998900,
 87          "n": 0,
 88          "scriptPubKey": {
 89            "asm": "0 a41424b6995beeaef7cbc9a4ebcf91b71793983d",
 90            "desc": "addr(bcrt1q5s2zfd5et0h2aa7texjwhnu3kute8xpaqgz39r)#qxc0s854",
 91            "hex": "0014a41424b6995beeaef7cbc9a4ebcf91b71793983d",
 92            "address": "bcrt1q5s2zfd5et0h2aa7texjwhnu3kute8xpaqgz39r",
 93            "type": "witness_v0_keyhash"
 94          }
 95        }
 96      ],
 97      "fee": 10.00001100,
 98      "hex": "020000000001017e263fc2f6621746eae77dd0cf5a8e42e3129a786a9dce38b0940bb1e814dcf50000000000fdffffff01b4236bee00000000160014a41424b6995beeaef7cbc9a4ebcf91b71793983d0247304402206b532fdf2ca4111872a8c8c322ab68e21e079253862c3c95cf86d18efcdb143d022039514e377cbac97c3ec1459aec7c9584a56c1c527588600c0435483c7b96535c012103fc3c5d0caa493055f57d5f3098b42555543a5219519ab90a22b20ddea49f151500000000"
 99    }
100  ]
101}

How did you obtain Bitcoin Core

Compiled from source

What version of Bitcoin Core are you using?

Bitcoin Core daemon version v28.99.0-ae69fc37e4ff

Operating system and version

Ubuntu 24.04.1 LTS

Machine specifications

No response

Marilanceh commented at 10:13 pm on January 18, 2025: none

Hi @vforvilela

I tried to reproduce your issue but it didn’t work, no steps included. But it seems like you need to take immediate action to complete your request.

Please write to them using the “Chat icon” located on the support page via; Support Request

You can include a link to this issue in your message.

Alternatively, you can also search for answers in their help documentation or get help from other users on their community forum.

Your question is out of scope, where our team here can help. Use the help link provided above.

This issue will be resolved.

maflcko added the label Tests on Jan 20, 2025

maflcko commented at 7:31 am on January 20, 2025: member