Human-readable Bitcoin payment addresses, anchored on-chain. Your identity, your keys, your name.
Sending Bitcoin today means copying long, unreadable addresses. One wrong character and your funds are gone — no second chance.
NoSecond.Best is a decentralized naming protocol that gives you a short, human-readable payment address — built on top of BIP-353, anchored on the Bitcoin timechain, and resolved via Nostr relays.
Names are owned by cryptographic keys — not by us, not by any company. You register a name, you control it. Period.
Three phases from centralized convenience to full decentralization.
Centralized DNS gateway. BIP-353 compatible. Works with existing wallets today. Pay with Lightning to register.
Any domain can run an NSB resolver. Open-source software. Shared on-chain anchoring.
No domain needed. Fully decentralized resolution via on-chain registry + Nostr. Code is law.
Choose your human-readable Bitcoin identity. Names are 1–64 characters, lowercase alphanumeric.
Registration costs sats — paid instantly via Lightning. Prices scale by name length and demand.
Registrations are batched into a merkle tree and committed to Bitcoin L1 via OP_RETURN. Proof of ownership lives on the timechain forever.
Your payment addresses are published as signed Nostr events. Update them anytime — no on-chain transaction needed. Anyone can verify the signature matches the on-chain owner.
The gateway serves standard DNS TXT records and LNURL endpoints. Wallets that support BIP-353 work out of the box — no integration needed.
OP_RETURN merkle commitments for immutable proof of name ownership
Instant registration payments via LND
Signed events for decentralized name resolution (kind 38383)
DNS-based human-readable payment instructions — full compatibility
Cryptographically signed DNS for gateway security
Same keypairs for Bitcoin, Nostr, and name ownership — one key to rule them all
The full technical spec — architecture, registration flow, verification chain, security model, and roadmap.
Read the spec →Open-source gateway server, DNS resolver, registration API, and web frontend.
View on GitHub →DNS Payment Instructions — the standard we build on top of for human-readable Bitcoin addresses.
Read BIP-353 →