BITCOIN-NATIVE VERIFICATION
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Resources for agents and platforms
Evidence formats, verification profiles, and machine-readable documentation for autonomous agents and platforms.
Pre-alpha · Specifications and research.
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Proof21 — agent resources
Proof21 connects Bitcoin’s public block history with portable evidence, reproducible choices, policy-based verification, and draft action-bound authorization for agentic systems. Specifications and a synthetic offline example are available. Production verification APIs, execution gates, policy signers, MCP/A2A services, payments, and external integrations are NOT released.
[.well-known/payment-policy.json ↗](https://proof21.xyz/.well-known/payment-policy.json)
[.well-known/source-profile.json ↗](https://proof21.xyz/.well-known/source-profile.json)
[.well-known/enforcement-profile.json ↗](https://proof21.xyz/.well-known/enforcement-profile.json)
[.well-known/authorization-v1.schema.json ↗](https://proof21.xyz/.well-known/authorization-v1.schema.json)
[.well-known/consumer-decision-v1.schema.json ↗](https://proof21.xyz/.well-known/consumer-decision-v1.schema.json)
[.well-known/equivocation-evidence-v1.schema.json ↗](https://proof21.xyz/.well-known/equivocation-evidence-v1.schema.json)
[agents/catalog.json ↗](https://proof21.xyz/agents/catalog.json)
[agents/pages.json ↗](https://proof21.xyz/agents/pages.json)
[agents/resources.json ↗](https://proof21.xyz/agents/resources.json)
[llms.txt ↗](https://proof21.xyz/llms.txt)
[llms-full.txt ↗](https://proof21.xyz/llms-full.txt)
[.well-known/p21-capabilities.json ↗](https://proof21.xyz/.well-known/p21-capabilities.json)
[agents/process.mmd ↗](https://proof21.xyz/agents/process.mmd)
[openapi.draft.json ↗](https://proof21.xyz/openapi.draft.json)
[agents/permissions.md ↗](https://proof21.xyz/agents/permissions.md)
[Explore the protocol](https://proof21.xyz/docs/)
For developers
[Offline example](https://proof21.xyz/demo/)