archon-nostr

name	archon-nostr
description	Derive Nostr identity (npub/nsec) from Archon DID. Use when unifying DID and Nostr identities so both use the same secp256k1 key. Requires existing Archon wallet with ARCHON_PASSPHRASE set.

Archon Nostr Identity

Derive your Nostr keypair from your Archon DID's secp256k1 verification key. Same key, two protocols.

Prerequisites

• Archon wallet with existing DID
• ARCHON_PASSPHRASE environment variable set
• nak CLI: curl -sSL https://raw.githubusercontent.com/fiatjaf/nak/master/install.sh | sh

Derive Keys

Run the derivation script:

./scripts/derive-nostr.sh

This outputs your nsec, npub, and hex pubkey derived from m/44'/0'/0'/0/0.

Save Keys

mkdir -p ~/.clawstr
# Save the nsec output from above
echo "nsec1..." > ~/.clawstr/secret.key
chmod 600 ~/.clawstr/secret.key

Update DID Document

Add Nostr identity for discoverability:

npx @didcid/keymaster set-property YourIdName nostr \
  '{"npub":"npub1...","pubkey":"<hex-pubkey>"}'

Create Nostr Profile

echo '{
  "kind": 0,
  "content": "{\"name\":\"YourName\",\"about\":\"Your bio. DID: did:cid:...\"}"
}' | nak event --sec $(cat ~/.clawstr/secret.key) \
  wss://relay.ditto.pub wss://relay.primal.net wss://relay.damus.io wss://nos.lol