ryzizub / nuts

Cashu protocol specifications

Cashu NUTs (Notation, Usage, and Terminology)

These documents each specify parts of the Cashu protocol. Read the specifications for the legacy API here.

Specifications

Wallets and mints MUST implement all mandatory specs and CAN implement optional specs.

Mandatory

#	Description	Wallets	Mints
00	Cryptography and Models	Nutshell, Feni, Moksha, Nutstash, cashu-ts, cashu-crab	Nutshell, Feni, LNbits, Moksha, cashu-rs-mint
01	Mint public keys	Nutshell, Feni, Moksha, Nutstash, cashu-ts, cashu-crab	Nutshell, Feni, LNbits, Moksha, cashu-rs-mint
02	Keysets and keyset IDs	Nutshell, Feni, Moksha, Nutstash, cashu-ts, cashu-crab	Nutshell, Feni, LNbits, Moksha, cashu-rs-mint
03	Swapping tokens	Nutshell, Feni, Moksha, Nutstash, cashu-ts, cashu-crab	Nutshell, Feni, LNbits, Moksha, cashu-rs-mint
04	Minting tokens	Nutshell, Feni, Moksha, Nutstash, cashu-ts, cashu-crab	Nutshell, Feni, LNbits, Moksha, cashu-rs-mint
05	Melting tokens	Nutshell, Feni, Moksha, Nutstash, cashu-ts, cashu-crab	Nutshell, Feni, LNbits, Moksha, cashu-rs-mint
06	Mint info	Nutshell, eNuts	Nutshell, cashu-rs-mint

Optional

#	Description	Wallets	Mints
07	Token state check	Nutshell, Feni, Moksha, Nutstash, cashu-ts, cashu-crab	Nutshell, Feni, LNbits, Moksha, cashu-rs-mint
08	Overpaid Lightning fees	Nutshell, Feni, Moksha, Nutstash, cashu-ts, cashu-crab	Nutshell, LNbits, Moksha, cashu-rs-mint
09	Deterministic backup and restore	-	-
10	Spending conditions	Nutshell	Nutshell
11	Pay-To-Pubkey (P2PK)	Nutshell	Nutshell
12	DLEQ proofs	Nutshell	Nutshell