He's using Libbitcoin, it's an alt-implementation maintained since 2011.
https://github.com/libbitcoin
https://twitter.com/evoskuil/status/1784765202078056528
Here's the dev slack:
https://join.slack.com/t/libbitcoin/shared_invite/enQtNDgxMjQxODg0NTM1LTFhYzNhYjYxYTg1OTc0NGQ0OWQxY2ZiYWI5ODc1ZmFjZjEyNGZkNWQwM2JiMzk0YjhkMDc0MjkxOTgwMzQ0ZDM
u32larry
npub1d7…y0880
2024-05-01 20:29:45
in reply to nevent1q…v030
Author Public Key
npub1d7hra747akvkya6n8qawuw9zyzkr2nzc3uf023jqmq6wh8maz8kq0y0880Published at
2024-05-01 20:29:45Event JSON
{
"id": "28ac442ba6702fe28708984bd60c0c16fa727aaf555858bbc0ab4109895b5b2f",
"pubkey": "6fae3efabeed99627753383aee38a220ac354c588f12f54640d834eb9f7d11ec",
"created_at": 1714595385,
"kind": 1,
"tags": [
[
"e",
"f1e869a2ba2575b58ce1c5f5ff544a01346bfaedc55770c92d10aeeeaf1b7e37",
"wss://pyramid.fiatjaf.com",
"root"
],
[
"e",
"237675fdc5568ca901332152b43f954d62eb0823f494a575ce41dd5e40975598",
"wss://pyramid.fiatjaf.com",
"reply"
],
[
"p",
"6fae3efabeed99627753383aee38a220ac354c588f12f54640d834eb9f7d11ec"
],
[
"p",
"3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefa459d"
]
],
"content": "He's using Libbitcoin, it's an alt-implementation maintained since 2011. \n\nhttps://github.com/libbitcoin\nhttps://twitter.com/evoskuil/status/1784765202078056528\n\nHere's the dev slack:\n\nhttps://join.slack.com/t/libbitcoin/shared_invite/enQtNDgxMjQxODg0NTM1LTFhYzNhYjYxYTg1OTc0NGQ0OWQxY2ZiYWI5ODc1ZmFjZjEyNGZkNWQwM2JiMzk0YjhkMDc0MjkxOTgwMzQ0ZDM",
"sig": "1f3b662c85be6d388f0a3dfb712275230a2274a8999870414fe38711b68cc3091a906ae91baa4f909b89c7e9e24da854756ea5e7ecf5fe0561b77ff3683fd13b"
}