NIP-XX: Arbitration Services

[pats2sats]

Summary

Adds a protocol for decentralized arbitration services used by marketplace orders and settlement flows. The proposal lets arbiters advertise service policies while buyers and sellers publish the arbitration policies, payment forms, and settlement proofs they accept.

What this defines

• kind:30303 arbitration service advertisements.
• kind:17388 arbitration methods for trusted arbiters, accepted policies, payment forms, and settlement address proofs.
• Policy matching between buyer, seller, arbiter, and local implementation drivers.
• EVM escrow parameter and address-proof formats.
• A compatible on-chain escrow lifecycle for arbiter-backed settlement.

Scope

This specifies discovery, compatibility, and settlement coordination. Concrete escrow contracts or scripts remain implementation-specific as long as their policy identifiers can be advertised and matched.