From stratum,I know that the coinbase is composed of "Coinb1 +Extranonce1 + Extranonce2 + Coinb2".

How did Extranonce2_size change ?

Will the Extranonce2_size change when I connect to a pool?


Miner sent message mining.subscribe to pool

mining.subscribe("user agent/version", "extranonce1")

Pool reply with

[[["mining.set_difficulty", "subscription id 1"],
["mining.notify", "subscription id 2"]],

Pool set size of extranonce2

  • Thanks for your reply.I would like to know in what situation the Extranonce2_size will be changed. – davoschih Jul 13 '18 at 7:41

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