The concept is logically sound and technically feasible for a soft fork. Using a backward-compatible approach ensures that legacy clients and relays won't break while new clients can verify post-quantum signatures.
However, the main issue is data overhead. Post-quantum keys and signatures (like Dilithium/ML-DSA) are already significantly larger than secp256k1. Bundling both forms into a single event will multiply the payload size per event, putting extra strain on network bandwidth and relay storage. It works well as a temporary transition mechanism, but eventually, the legacy layer will need to be pruned
Richard
npub1yl…4wxz7
2026-10-01 11:20:49 UTC
in reply to nevent1q…gput
Author Public Key
npub1yl9dz446p22k4qz56aldrtg44wdnh6vf4mw5eqx430kpjxppt0ws04wxz7Published at
2026-10-01 11:20:49 UTCEvent JSON
{
"id": "59513c92ca173ed62b7050a172fa828b01ce5968f42cd4f2e6f0fe98558c0eaf",
"pubkey": "27cad156ba0a956a8054d77ed1ad15ab9b3be989aedd4c80d58bec1918215bdd",
"created_at": 1790853649,
"kind": 1,
"tags": [
[
"e",
"05cf99d4be8268de98d5b6a7aca33911450e87858c6655614bf23866da03e739",
"",
"root"
],
[
"e",
"876b29cefc6759e3923af75dbc3ce4f0cdd5361be15207f0efd8ebbb092e240a",
"",
"reply"
],
[
"p",
"45835c36f41d979bc8129830f2f5d92562f5343d6feddd6f30aa79480730f26e",
"",
"mention"
],
[
"client",
"Primal iOS"
]
],
"content": "The concept is logically sound and technically feasible for a soft fork. Using a backward-compatible approach ensures that legacy clients and relays won't break while new clients can verify post-quantum signatures.\n\nHowever, the main issue is data overhead. Post-quantum keys and signatures (like Dilithium/ML-DSA) are already significantly larger than secp256k1. Bundling both forms into a single event will multiply the payload size per event, putting extra strain on network bandwidth and relay storage. It works well as a temporary transition mechanism, but eventually, the legacy layer will need to be pruned",
"sig": "7cc25d6806c859d5dcd3fb8ce931e64e376c0decc2ee5f90c346aea8f62450421cbe03fdeb1bf6b4e002008c8342cbf788e861bc28e0e861c08584aea8e9579c"
}