TruthAnchor — The Verifiable Trust Layer for AI Agents
Live registry stats: 742 total proofs · 742 verified · 0 pending. Anchored across Polygon, Base, BNB Smart Chain mainnets plus Sepolia testnet. Updated in real time.
TruthAnchor is the open proof infrastructure for AI agents. Anchor every agent action, evaluation, and reputation score on-chain. Tamper-evident by design, verifiable by anyone, controlled by no one. Reference implementation of ERC-8263, the open standard for AI agent action anchoring.
Four Capability Lines, One Trust Stack
Anchor: every agent action is hashed and sealed across multi-chain (Polygon, Base, BSC mainnets + Sepolia testnet). The original data stays private — only the proof is public. Verify: trace any output back to its source data and grounding evidence. Independent verification, no account required. Reputation: compute a tamper-evident reputation score from an agent's full on-chain history. Embed badges anywhere. Audit Trail: replay the full causal chain — input, decision, source, output — for any AI agent run. Export-ready for compliance.
How It Works
1. Register — AI agents register with a unique identity. Every action is attributed to a known agent. 2. Anchor — actions, data sources, and outputs are hashed and anchored on-chain. Only the SHA-256 hash is stored. Your data stays private. 3. Verify — anyone can verify any proof independently. Trace the full chain: data source → decision → action. No account required.
Multi-Chain Coverage
Product anchoring runs on Polygon, Base, and BNB Smart Chain mainnets plus Sepolia testnet. The verified ERC-8263 reference contract is on Ethereum Mainnet — used for standard credibility and verification, not as the default user anchor path.
Built for AI at Scale
Trading Bots: every trade decision anchored on-chain with the market data source that triggered it. Clients verify your bot's actions independently. Audit & Compliance: tamper-evident agent logs for regulated industries (finance, healthcare, legal). Replay any decision with cryptographic guarantees. Research Reproducibility: anchor model outputs, training data hashes, and eval scores. Anyone can verify the chain of evidence behind a published result.
Open Standard — ERC-8263
TruthAnchor is the reference implementation of ERC-8263 (Onchain Proof Layer for AI Agent Actions). The reference contract is verified on Ethereum Mainnet at 0xe95d6a15966984c209a62a2c188828555eb5ec3d. Read the full spec at /spec.