How do you create a "coinbase tx"? Can it be built via createrawtransaction or can it only be created in code? Then I don't fully understand how to build this transaction.
I will give you an example of a transaction from a real block, what I understand about it. What is marked with questions or not marked, I don't understand.
{
"result": {
"in_active_chain": true,
"txid": "26110d654a1e52dd6fb6aa141e9ed37b83367daf3cfd35059188285bf5a4ca23",
"hash": "fe239009e8a7c65da8ff48be0a50a3bd1cb19016e29d16453a94a89570b50ce9",
"version": 2,
"size": 214,
"vsize": 187,
"weight": 748,
"locktime": 0,
"vin": [
{
"coinbase": "03ed630c04a95e29652f466f756e6472792055534120506f6f6c202364726f70676f6c642f1a0727769676000000000000",
"txinwitness": [
"0000000000000000000000000000000000000000000000000000000000000000"
],
"sequence": 4294967295
}
],
"vout": [
{
"value": 6.36546374,
"n": 0,
"scriptPubKey": {
"asm": "0 35f6de260c9f3bdee47524c473a6016c0c055cb9",
"desc": "addr(bc1qxhmdufsvnuaaaer4ynz88fspdsxq2h9e9cetdj)#ry8yggxl",
"hex": "001435f6de260c9f3bdee47524c473a6016c0c055cb9",
"address": "bc1qxhmdufsvnuaaaer4ynz88fspdsxq2h9e9cetdj",
"type": "witness_v0_keyhash"
}
},
{
"value": 0.0,
"n": 1,
"scriptPubKey": {
"asm": "OP_RETURN aa21a9ed95c53abf59b8c6df571b1ca9ff8ad0e6f77a82b2b59c229463cda7a0281a4caf",
"desc": "raw(6a24aa21a9ed95c53abf59b8c6df571b1ca9ff8ad0e6f77a82b2b59c229463cda7a0281a4caf)#thl9sjed",
"hex": "6a24aa21a9ed95c53abf59b8c6df571b1ca9ff8ad0e6f77a82b2b59c229463cda7a0281a4caf",
"type": "nulldata"
}
}
],
"hex": "020000000001010000000000000000000000000000000000000000000000000000000000000000ffffffff3103ed630c04a95e29652f466f756e6472792055534120506f6f6c202364726f70676f6c642f1a0727769676000000000000ffffffff0246edf0250000000016001435f6de260c9f3bdee47524c473a6016c0c055cb90000000000000000266a24aa21a9ed95c53abf59b8c6df571b1ca9ff8ad0e6f77a82b2b59c229463cda7a0281a4caf0120000000000000000000000000000000000000000000000000000000000000000000000000",
"blockhash": "00000000000000000002faa1874cb499bcc39f45689a36387c4fbe9f3e5a28e4",
"confirmations": 1,
"time": 1697210044,
"blocktime": 1697210044
},
"error": null,
"id": null
# nVersion: 02000000
# marker: 00
# flag: 01
# txIns:
# countIns: 01
# in: 0000000000000000000000000000000000000000000000000000000000000000
# sequence: ffffffff
# 31: - ?????????????
# heigt_block: 03ed630c
# 04: - ?????????????
# time: a95e2965
# message: 2f466f756e6472792055534120506f6f6c202364726f70676f6c642f1a0727769676000000000000 - extranonce?
# : ffffffff
# : 02
# : 46edf025
# : 0000000016
# (hex_address vout n - 0): 001435f6de260c9f3bdee47524c473a6016c0c055cb9
# : 000000000000000026
# default_witness_commitment: 6a24aa21a9ed95c53abf59b8c6df571b1ca9ff8ad0e6f77a82b2b59c229463cda7a0281a4caf - ???????
# whitness: 01200000000000000000000000000000000000000000000000000000000000000000
# nLockTime: 00000000