PANews reported on June 11 that according to Protos, Jason Hughes, vice president of OCEAN mining pool, announced that he would sell all his Bitcoin holdings and withdraw from the crypto industry to protest the OP_RETURN change resolution passed by the Bitcoin core developer team. The change is planned to remove the 80-byte OP_RETURN output limit in the Bitcoin Core 30 version released in October, and the default memory pool will support up to 4MB transactions, aiming to meet the needs of applications such as DAO, oracle and stablecoins.

Hughes said in an open letter: "52 days ago, Bitcoin core development was at least principled," and said that "the characteristics that made Bitcoin unique no longer exist." He will leave when the changes take effect in October and has received job offers from several non-crypto companies.