Sweep ALPH from Nostr

Move all ALPH and tokens from your Nostr-derived Alephium address to a wallet you control.
Every Nostr npub deterministically maps to an Alephium address. If you have a NIP-07 extension (e.g. Alby), your address and balances are loaded automatically.

Step 1 — Your Nostr-derived Alephium address

How it works:
1. Enter your Nostr identity (npub, NIP-05, or hex key) or connect a NIP-07 extension (e.g. Alby).
2. Your public key is embedded in a BIP-340 Schnorr verification script, Blake2b-hashed to produce an Alephium P2SH address.
3. The tool checks your balance on mainnet; if empty, it auto-switches to testnet (where you can request tokens from the faucet).
4. To sweep, the node builds an unsigned transaction (all ALPH + tokens). If the node endpoint fails, a client-side fallback builds the raw tx from UTXOs.
5. The txId is signed with your Nostr key (BIP-340 Schnorr) — via extension or local nsec. The signature is verified client-side before broadcast.
6. The signed transaction is broadcast via public node API.

APIs used: GET /addresses/{addr}/balance, GET /addresses/{addr}/utxos, POST /transactions/sweep-address/build, POST /transactions/decode-unsigned-tx, POST /transactions/submit
Node: node.mainnet.alephium.org / node.testnet.alephium.org
Faucet: faucet.testnet.alephium.org (testnet only, user-triggered)
NIP-05: https://{domain}/.well-known/nostr.json

Libraries: blakejs 1.2.1 (Blake2b), @noble/curves 1.8.1 (BIP-340 Schnorr)

Token list: from alephium/token-list (227 tokens embedded).

License: Public Domain (Unlicense). Verify, fork, host anywhere.
Source: View page source — it's a single self-contained file.