...five/blob/main/projects/opcode-implementations-test-coverage-code-analysis-and-stats-il-evm-nethermind.md)
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...e s value from s to secp256k1n - s, flip the v value (27 -> 28, 28 -> 27), and the resulting signature would still be valid.
这样貌似也没什么问题？但是在比特币早期版本（隔离见证之前）中会有一个小问题：交易ID可能发生变化。
### 可锻性有什么影...
...ubscription is returned,
// but is only used to create the subscription, and does not affect the returned subscription.
return func(ctx context.Context, err error) (event.Subscription, error) {
if err != nil {
m.logger.Warn("resubscribing after failed L1 subscription", "err", err)
}
...