btc fail

[axaith]

JSON protocol response: { "result": null, "error": { "code": -8, "message": "getblocktemplate must be called with the segwit rule set (call with {\"rules\": [\"segwit\"]})" }, "id": 0 }

i noticed bfgminer wasnt working lately, so found this program and when it didnt work either decided to try to figure out what the deal is and found this error message

[JayDDee]

Please explain what you're talking about.

[axaith]

hi, thanks for your response. i am attempting to test the btc mining functionality of your program, utilizing the latest bitcoin core (0.19.0.1) and the latest version of your program (3.11.1). my commandline looks something like

$ cpuminer -a sha256d -o http://127.0.0.1:8332 -O something:something --no-getwork --coinbase-addr something

i had found something somewhere saying to use no-getwork with btc, though i get the same error either way:

json_rpc_call failed, retry after 10 seconds

adding -P reveals the error message in my previous post.

[JayDDee]

OK, now I understand. TLFR, I won't do much about it.

sha256d is impossible to mine with a CPU,even the latest threadrippers. Difficulty is so high it takes days to find just a share in a pool, let alone the block time solo.

I try to support GBT as best I can and AFAIK it works for most algos/coins.

The error mesage mentions segwit, I assume BTC now enforces it. I believe segwit involves a mining protocol change and cpuminer-opt apparently doesn't support it.

I assume this applies to all coins that enable segwit.

The best reference miner for sha256d cpuminer is pooler's version, however I don't believe it has been updated for a long time. A more recent CPU miner is TPruvot, it may be more up to date.

If you find a working version I can port the change into cpuminer-opt, not so much for BTC but for other coins that use segwit and may still be CPU mineable.

[axaith]

ok, thanks for the info

[axaith]

fyi i tried tpruvot cpuminer-multi from git and it gives the same error

[JayDDee]

I guess this doesn't help you with bfgminer. There must be an update for it somewhere.

I guess cpu mining BTC is dead for good now.

I don't see a reason to keep this issue open.

[JayDDee]

Closing.