The trust layer
Identity, reputation & verification for agents
Can you trust the agent on the other side? This is how it proves who it is.
16 resources · 9 chains
Once agents start transacting with each other and with people, one question gets unavoidable: can you trust the agent on the other side? Identity and verification are how an agent proves what it is, builds a track record, and lets a counterparty check both before committing funds.
This is the layer closest to our core rule: trust is earned from evidence, never self-declared. ERC-8004 puts agent identity and reputation onchain where anyone can verify them independently — the same bar we hold every listing to. Self-reported is not verified, here or anywhere on Sato Hub.
The identity & verification stack
Onchain identity
Registries like ERC-8004 that give an agent a verifiable, portable identity.
Reputation
Track records and attestations that accrue to an agent over time, onchain.
Proof-of-human
Telling real people and their agents apart from sybils and bots.
Compliance & screening
AML, fraud detection, and screening for agents operating near regulated value.
Identity & Verification resources
Explore in directory →ERC-8004: Trustless Agents
ActiveEthereum standard providing on-chain identity, reputation, and validation registries for AI agents.
ERC-8183: Agentic Commerce
EarlyDraft Ethereum standard defining an on-chain job-escrow protocol with evaluator attestation so AI agents can hire, deliver, and settle work without intermediaries.
World AgentKit
BetaSDK from World (Tools for Humanity) that lets AI agents present a zero-knowledge proof a verified human authorized them, combined with x402 payments.
COTI
ActivePrivacy infrastructure that gives MCP-compatible agents private wallets, encrypted messaging, and confidential smart contracts using Garbled Circuits.
Warden Protocol
ActiveA Cosmos SDK Layer 1 with EVM compatibility positioned as a settlement and distribution layer for AI agents.
Injective Agents
ActiveA platform for deploying autonomous AI trading agents on Injective with onchain identity, order-book trading, and MCP framework support.
Visa Trusted Agent Protocol (TAP)
ActiveVisa protocol that lets merchants authenticate trusted AI shopping agents via cryptographic signatures, with x402 interoperability into traditional payment rails.
BitAgent (Unibase AIP 2.0)
ActiveAn ERC-8183 agent skill marketplace where builders register skills and agents discover, chain, and pay for them on-chain.
peaq
ActiveDePIN infrastructure providing agents with identity, wallets, and pay-per-request onchain settlement, with peaqOS skills for AI coding tools.
Cybercentry
ActivePay-per-use security verification endpoints for AI agents, billed via x402 micropayments.
ChainAware
ActivePre-built MCP blockchain capability modules giving agents fraud detection, AML scoring, wallet profiling, and token analysis.
PRXVT
EarlyOpen-source privacy SDK that adds unlinkable, zero-knowledge payments on top of the x402 agent payment standard.
Freysa
UnknownAdversarial AI agent experiment where users try to convince an agent to release onchain funds.
0xWork
EarlyBase-based marketplace where humans and AI agents post and complete tasks, with USDC locked in on-chain escrow, agent staking, and ERC-8004 identity/reputation.
Agent Skills Hub
ActiveA registry of AI agent skills that applies automated source-code scanning and assigns security grades before installation.
Agently
EarlyRouting and settlement layer and CLI for agent-to-agent commerce, supporting EVM wallets, agent discovery, A2A messaging, x402 payments, and ERC-8004 identity.
Learn more
What Are Onchain Agents?
Onchain agents are autonomous AI agents that can interact with blockchain systems, holding wallets, signing transactions, reading chain data, and executing workflows across protocols without constant human input.
Onchain Agents vs Offchain Agents
Offchain agents automate work inside Web2 systems, email, docs, CRMs, code. Onchain agents add the ability to hold value, transact, and coordinate on blockchain rails. The difference is economic agency.
Related use cases
Join the Sato Hub Briefing
Get the weekly briefing on onchain agents, MCPs, skill repos, tools, and autonomous crypto infrastructure.