List of specifications

LNP/BP stands for "Bitcoin Protocol / Lightning Network Protocol". This repository covers standards & best practices for Layer 2+ in cases when they do not require soft- or hard-forks of the Bitcoin blockchain level and are not directly related to issues covered in Lightning Network RFCs (BOLTs).

Basically, LNP/BPs cover everything that can be anchored to Bitcoin transactions, defines primitives for L2+ solution design and describes complex use cases which can be built from some primitives. This allows such solutions as financial assets, storage, messaging, computing and different forms of secondary markets leveraging Bitcoin security model and Bitcoin as a method of payment/medium of exchange.

Criteria for a LNP/BP specification proposal:

• Should not be covered by existing or proposed BIPs

• Should not cause soft- or hard-fork in Bitcoin blockchain (but may depend on soft-forks from an existing BIP proposals)

• Should not distort Bitcoin miner's economic incentives

• Should not pollute Bitcoin blockchain with unnecessary non-transaction related data or have to maintain such pollution as low as possible

• Must not require a utility or security tokens to function (but may enable creation of digital assets or tokenized physical goods)

• Must not depend on non-bitcoin blockchains (but may be applicable to other blockchains)

Verticals for LNP/BP proposals:

Name	Description	Examples
Cryptography	Cryptographic primitives	Cryptography, zero knowledge
Wallet	Standards for wallet and apps	Derivation paths, APIs, RGB asset schemata
Networking	P2P network communications	Network encryption, framing, connectivity etc
Smart contracts	Distributed smart contracts	Scriptless scripts, RGB, lightning channels etc

List of LNP/BP standards and proposals

No	Vertical	Title	Type	Status
1	Cryptography	Key tweaking: collision-resistant elliptic curve-based commitments	Standard	Proposal
2	Cryptography	Script tweaking: deterministic embedding of cryptographic commitments into script pubkeys	Standard	Proposal
3	Cryptography	Deterministic definition of transaction output containing cryptographic commitment	Standard	Proposal
4	Cryptography	Multi-protocol commitment scheme with zero-knowledge provable uniqueness	Standard	Proposal
5	Wallet	Universal short Bitcoin identifiers for blocks, transactions and their inputs & outputs	Standard	Proposal
6	Cryptography	Deterministic bitcoin commitments	Standard	Proposal
7	Cryptography	Commitments for structural and hierarchical data	Standard	Proposal
8	Cryptography	Single-use-seals	Informational	Draft
9	Cryptography	Client-side-validation	Informational	Draft
10	Cryptography	Bitcoin transaction output-based single-use-seals	Standard	Proposal
11	Cryptography	Anchoring multiple deterministic bitcoin commitments in the same transaction output	Standard	Final
12	Cryptography	TapRet: Taproot script tree-based OP_RETURN deterministic bitcoin commitments	Standard	Final
13	Smart contracts	RGB: Client-side-validated confidential smart contracts for Bitcoin and Lightning Network	Informational	Draft
14	Smart contracts	RGB Schema: client-side validation rules for RGB smart contracts	Standard	Planned
15	Smart contracts	RGB client-side verification and data serialization	Standard	Planned
16	Smart contracts	AluVM instruction set architecture extensions for handling RGB state validation	Standard	Planned
17-18	Reserved	For the future use by RGB extensions
19	Cryptography	Reserved for sign-to-contract deterministic bitcoin commitments
20	Wallet	RGB fungible assets interface (RGB-20)	Standard	Final
21	Wallet	RGB non-fungible collectibles interface (RGB-21)	Standard	Proposal
22	Wallet	RGB reputation and identity interface (RGB-22)	Standard	Draft
23	Wallet	RGB verifiable-unique history log for auditable data (RGB-23)	Standard	Planned
24	Wallet	RGB schema for decentralized global domain name system (RGB-24)	Standard	Planned
25-29	Reserved	For the future use by RGB schemata
30	Wallet	Interface for fungible RGB assets with decentralized issue (RGB-30)	Standard	Final
31	Reserved	Standard Contractum Libraries (SCL)	Standard	Draft
32	Wallet	BIP-32 derivation path extension for read-only wallets	Standard	Draft
33	Smart contracts	Lightspeed: micro-payments for Lightning Network	Draft
34	Smart contracts	Zero-knowledge arguments for data persistence using probabilistic checkable proofs	Standard	Draft
35	Smart contracts	Bifrost: LN message extensions for RGB data propagation	Standard	Planned
36	Reserved	For future use by bitcoin protocol extensions
37	Wallet	Invoicing formats for RGB-20 fungible assets schema	Standard	Rejected
38	Wallet	Universal LNP/BP invoices	Standard	Draft
39	Reserved	For future use by bitcoin protocol extensions
40	Smart contracts	Storm: trustless storage with escrow contracts	Standard	Draft
41	Smart contracts	Lightning network message extensions for Storm	Standard	Planned
42	Reserved	For future use by lightning network protocol extensions
43	Wallet	RGB-enabled BIP43 purpose field & identity system	Standard	Draft
44	Wallet	Script templating: key derivations within Bitcoin scripts	Standard	Planned
45	Smart contracts	Lightning network message extensions for decentralized exchange functionality	Standard	Planned
46	Wallet	Deterministic derivation paths for LNP	Draft
47,48	Reserved	For future use by bitcoin protocol extensions
49	Smart contracts	Synchronized multi-hop state updates via delegation in Lightning network	Standard	Planned
50	Smart contracts	Bifrost: generalized Lightning network protocol core	Standard	Planned
51	Smart contracts	Bifrost: channel management protocol	Standard	Draft
52	Smart contracts	Bifrost routed messaging system based on Sphinx protocol	Standard	Draft
53	Smart contracts	Milti-peer payment channels for Bifrost	Standard	Draft
54	Smart contracts	Channel factories based on Bifrost protocol	Standard	Draft
55	Smart contracts	HTLC channel synchronization in Bifrost	Standard	Draft
56	Smart contracts	PTLC channel synchronization in Bifrost	Standard	Draft
57	Smart contracts	Decentralized naming & name resolution system	Standard	Planned
58	Cryptography	Apophis: distributed elliptic curve-based key creation with shared secrets	Standard	Draft
59	Smart contracts	Typhon: trustless Bitcoin sidechains	Standard	Draft
60	Smart contracts	Ibiss: reputation-based interactive computation integrity arguments	Informational	Draft
61	Smart contracts	Toth: reputation-based interactive settlement for computation integrity arguments	Informational	Draft
62	Smart contracts	Prometheus: trustless multiparty computing with escrow & arbitration on bitcoin	Standard	Draft
63	Smart contracts	Prometheus+: prometheus over LN with tokenized RGB reputation	Standard	Planned
64-79	Reserved	For the future use by lightning network protocol extensions
80	Cryptography	Merkle mountain ranges	Standard	Final
81	Cryptography	Tagged merkle trees for client-side-validation	Standard	Draft
82	Cryptography	OpenTimestamps bitcoin transaction commitments	Standard	Final
83	Cryptography	OpenTimestamps proof construction & verification	Standard	Final
83	Cryptography	OpenTimestamps proof serialization	Standard	Final
84	Cryptography	OpenTimestamps calendar and attestation services	Standard	Final
85-99	Reserved
100	Reserved	For future use by a scalable & confidential single-use-seal commitment layer 1

Invited or planned proposals to join LNP/BP standards family

1. Discreet log contracts:

   • Specification effort
   • Lightning Discreet Log Contract Channels
2. Different pre-Schnorr schemes for scriptless scripts
3. Other lightning network extensions:

   • eltoo
   • PTLC