Native support for Bitcoin like crypto

[mahnunchik]

What do you think about adding native support for Bitcoin like crypto?

• Bitcoin Cash
• Kaspa

Bitcoin Cash support can be added pretty easy: https://github.com/CoinSpace/cs-bitcoin-wallet/blob/94417d20dcdbe99172c1ee33f32b460062e9c5f0/lib/utils.js#L53-L62

The library already supports without any issue: Dash, Dogecoin, and Litecoin.

[paulmillr]

What's required for "native support"?

[mahnunchik]

For Bitcoin Cash support it is necessary to implement SIGHASH_FORKID = 0x40 https://upgradespecs.bitcoincashnode.org/replay-protected-sighash/

Kaspa has a different transaction structure https://github.com/kaspanet/docs/blob/main/Reference/Transactions.md#transaction-structure , but overall there are many similarities

[paulmillr]

how much code would that require? if it's like one like we can do it. but the new code would be invalid in bitcoin; while being valid in cash. so needs a flag. which is more code.