There has been a new mining pool appearing after the halving called Lubian.com cf https://www.cryptoglobe.com/latest/2020/05/new-bitcoin-mining-pool-comes-out-of-nowhere-already-5th-largest/

How does a miners say to the world who he is, and how can he prove he is the one that has mined a specific block ?

1 Answer 1


They will either reuse the address in coinbase transaction subsidy output every time they mine a block, and then publicly claim that address, or they will "tag" their name (ascii-encoded) and some metadata in an OPRETURN or the scriptSig of the coinbase transaction.

Here's the coinbase TX from block 603526:


The script sig is


which is ASCII for:

5 z>mm> AVoU+lO*@\7Qmq{J !(ef$iS^'J /slush/

There's slushpool!

  • Note that anybody can put anything there. It’s not authenticated so you can just lie.
    – Claris
    May 16, 2020 at 3:04
  • Sure thank you. Pools could sign proof with the coinbase address but I don't know if any do.
    – pinhead
    May 16, 2020 at 3:06
  • They couldn’t, because the hash would cover the signature.
    – Claris
    May 16, 2020 at 23:00
  • I meant they could sign an arbitrary message and tweet it or whatever, proving control of the address that earned the block reward
    – pinhead
    May 16, 2020 at 23:02

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.