{"action":"closed","issue":{"url":"https://api.github.com/repos/OpenBazaar/openbazaar-go/issues/1928","repository_url":"https://api.github.com/repos/OpenBazaar/openbazaar-go","labels_url":"https://api.github.com/repos/OpenBazaar/openbazaar-go/issues/1928/labels{/name}","comments_url":"https://api.github.com/repos/OpenBazaar/openbazaar-go/issues/1928/comments","events_url":"https://api.github.com/repos/OpenBazaar/openbazaar-go/issues/1928/events","html_url":"https://github.com/OpenBazaar/openbazaar-go/issues/1928","id":538477077,"node_id":"MDU6SXNzdWU1Mzg0NzcwNzc=","number":1928,"title":"ZCash sighash upgrade","user":{"login":"cpacia","id":4504708,"node_id":"MDQ6VXNlcjQ1MDQ3MDg=","avatar_url":"https://avatars0.githubusercontent.com/u/4504708?v=4","gravatar_id":"","url":"https://api.github.com/users/cpacia","html_url":"https://github.com/cpacia","followers_url":"https://api.github.com/users/cpacia/followers","following_url":"https://api.github.com/users/cpacia/following{/other_user}","gists_url":"https://api.github.com/users/cpacia/gists{/gist_id}","starred_url":"https://api.github.com/users/cpacia/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/cpacia/subscriptions","organizations_url":"https://api.github.com/users/cpacia/orgs","repos_url":"https://api.github.com/users/cpacia/repos","events_url":"https://api.github.com/users/cpacia/events{/privacy}","received_events_url":"https://api.github.com/users/cpacia/received_events","type":"User","site_admin":false},"labels":[{"id":1726790464,"node_id":"MDU6TGFiZWwxNzI2NzkwNDY0","url":"https://api.github.com/repos/OpenBazaar/openbazaar-go/labels/ordering","name":"ordering","color":"44d1dd","default":false,"description":"ordering issues"}],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":{"url":"https://api.github.com/repos/OpenBazaar/openbazaar-go/milestones/20","html_url":"https://github.com/OpenBazaar/openbazaar-go/milestone/20","labels_url":"https://api.github.com/repos/OpenBazaar/openbazaar-go/milestones/20/labels","id":4937624,"node_id":"MDk6TWlsZXN0b25lNDkzNzYyNA==","number":20,"title":"0.13.7","description":"This release is a hotfix to make Zcash transactions compatible with the recent hardfork.","creator":{"login":"drwasho","id":3887694,"node_id":"MDQ6VXNlcjM4ODc2OTQ=","avatar_url":"https://avatars1.githubusercontent.com/u/3887694?v=4","gravatar_id":"","url":"https://api.github.com/users/drwasho","html_url":"https://github.com/drwasho","followers_url":"https://api.github.com/users/drwasho/followers","following_url":"https://api.github.com/users/drwasho/following{/other_user}","gists_url":"https://api.github.com/users/drwasho/gists{/gist_id}","starred_url":"https://api.github.com/users/drwasho/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/drwasho/subscriptions","organizations_url":"https://api.github.com/users/drwasho/orgs","repos_url":"https://api.github.com/users/drwasho/repos","events_url":"https://api.github.com/users/drwasho/events{/privacy}","received_events_url":"https://api.github.com/users/drwasho/received_events","type":"User","site_admin":false},"open_issues":1,"closed_issues":2,"state":"open","created_at":"2019-12-16T23:38:16Z","updated_at":"2019-12-17T21:51:26Z","due_on":"2019-12-18T08:00:00Z","closed_at":null},"comments":2,"created_at":"2019-12-16T15:18:52Z","updated_at":"2019-12-17T21:51:27Z","closed_at":"2019-12-17T21:51:26Z","author_association":"MEMBER","body":"The ZCash blossom hardfork changes the sighash algorithm for replay protection. Unfortunately, unlike BCH which accomplishes this by changing the algorithm for the old version and by keeping the algorithm the same post-fork, ZCash requires all wallets to upgrade to the new algorithm. \r\n\r\nFor us this means we need to make a small one-line change to the sighash algorithm so transactions can be made. Prior to this change blockbook will reject transactions signed with the old algorithm. \r\n\r\nThis does potentially create a more serious surface area for bugs if funds are in a 2 of 3 escrow address and one party signed to release the funds pre-fork and the other party post-fork as the transaction will be invalid. \r\n\r\nWe are considering a change to the protocol to request a party to resign the transaction, though this does not guarantee that party will come back online to do so. "}}
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