nostr-batcher v1.04

Generate batches of nostr keypairs (npub / nsec, plus hex) and export them. Works offline; nothing leaves this page.

Terminal: python3 nostr_batcher.py opens a TUI, or python3 nostr_batcher.py -n 50 -f csv -o keys.csv.

Works offline

1. How many keys?

Number of keypairs: 1 to 10000

2. Vanity prefix (optional)

npub1

Empty = random keys. Allowed: qpzry9x8gf2tvdw0s3jn54khce6mua7l (no 1, b, i, o). Each extra character makes the search 32 times slower.

3. Export format JSON (all fields, with timestamp) CSV (npub, nsec, pubkey_hex, privkey_hex) JSON Lines (one key per line) Plain text (readable blocks) nsec list only (one per line) npub list only (one per line)

4. Your keys

The nsec values are the private keys. Whoever has one controls that identity for good. Save the file somewhere private. This page stores nothing: closing it loses keys you have not downloaded.

Show nsec values on screen

#	npub	nsec	Copy

Public key = x-only coordinate of secret × G on secp256k1 (BIP-340, as used by NIP-01). npub/nsec = NIP-19 bech32 of the raw 32 bytes. Secrets come from crypto.getRandomValues with rejection sampling; the curve math is plain JavaScript BigInt, bundled inside this file. Compatible with the Python tool and any nostr client.