Change Details

After the Wellington upgrade, we disallow txs that don't have nVersion set to 1 or 2. This is already a policy rule, therefore doesn't require changes by any wallet. Forbidding the version field from having an arbitrary value (even if just for miners) allows us to use this field for a new transaction format, e.g. Mitra. The Bitcoin Cash chain is doing the exact same upgrade, for more in-depth analysis (including which non-1-2 transaction versions have historically been mined already), you can read their CHIP: https://gitlab.com/bitcoin.cash/chips/-/blob/3b0e5d55e1e139046794e850287b7acb795f4e66/CHIP-2021-01-Restrict%20Transaction%20Versions.md This diff is roughly based on this MR: https://gitlab.com/bitcoin-cash-node/bitcoin-cash-node/-/merge_requests/1599 Although ours has been significantly cleaned up.

After the Wellington upgrade, we disallow txs that don't have nVersion set to 1 or 2. This is already a policy rule, therefore doesn't require changes by any wallet. Forbidding the version field from having an arbitrary value (even if just for miners) allows us to use this field for a new transaction format, e.g. Mitra. The Bitcoin Cash chain is doing the exact same upgrade, for more in-depth analysis (including which non-1-2 transaction versions have historically been mined already), you can [[ https://gitlab.com/bitcoin.cash/chips/-/blob/3b0e5d55e1e139046794e850287b7acb795f4e66/CHIP-2021-01-Restrict%20Transaction%20Versions.md | read their CHIP ]]. Inspired by [[ https://gitlab.com/bitcoin-cash-node/bitcoin-cash-node/-/merge_requests/1599 | bchn#1117 ]].

After the Wellington upgrade, we disallow txs that don't have nVersion set to 1 or 2. This is already a policy rule, therefore doesn't require changes by any wallet. Forbidding the version field from having an arbitrary value (even if just for miners) allows us to use this field for a new transaction format, e.g. Mitra. The Bitcoin Cash chain is doing the exact same upgrade, for more in-depth analysis (including which non-1-2 transaction versions have historically been mined already), you can read their CHIP: [[ https://gitlab.com/bitcoin.cash/chips/-/blob/3b0e5d55e1e139046794e850287b7acb795f4e66/CHIP-2021-01-Restrict%20Transaction%20Versions.md | read their CHIP ]]. This diff is roughly based on this MR:Inspired by [[ https://gitlab.com/bitcoin-cash-node/bitcoin-cash-node/-/merge_requests/1599 | bchn#1117 ]]. Although ours has been significantly cleaned up.