I do know that on this discussion board numerous questions on this matter, I’ve checked most of those, however cannot discover the answer for my activity. I’m creating my very own algorithm for solo mining bitcoin on Python. I wrote all mandatory strategies for that, together with hashing the Merkle root, calculating the block header and many others. However now, I’m caught for just a few weeks on the coinbase transaction. I’ve studied the coinbase transaction web page on LearnMeABitcoin.com and tried to implement all logic for it, however cannot absolutely perceive learn how to make one. I need to embrace new guidelines (BIP34 – block header, BIP141 – SegWit tx) on this algorithm, however my data about hashing this isn’t sufficient. 🙁
Can somebody present perhaps extra supplies, some samples of code, or describe particulars about producing a coinbase transaction? Any info might be very useful, hope in your assist.
Additionally, I’m coaching on Bitcoin core in regtest mode, and after I use "generatetoaddress" methodology (for generate blocks) this one does not gen coinbase tx with BIP34 & BIP141 necessities, perhaps I would like set extra config for this one? I discovered somebody say about blockversion arg, is it true?
Thanks all ^^
P.S. If i miss some particulars about my activity, fell free to ask and I present all information which I’ve, of pattern of code which I’ve (it is not working)
UPDATE
I’ve greate information, I discover the answer and full this) thanks all for yout help, some later I share my code for gen coinbaseTx in python.
However left just one query, i take advantage of object for generate tx like on display, and it have some distinction with coinbase tx from generataing by Bitcoin Core utilizing generatetoaddress solely in a single place, filed n in first output, and it at all times "00000000", like 0 in little-endian with 4 bytes I hope. Can somebody clarify what it’s? I exploit p2wpkh script for hashing tackle, perhaps this one is kind for this? Once I add this worth all labored wonderful, and I efficiently gen CoinbaseTx, after construct block header and full block and broadcast it to node. However only for absolutely understanding my code, wanna to know what this "00000000" imply) Identify "n" for subject was by me, simply non permanent title.
