On-Chain Proofs

The verification stack for claims, evidence, and state transitions on-chain.

The problem

Blockchains can settle transactions, but they do not natively verify claims. Without structured proofs, systems rely on trust assumptions, unverifiable attestations, or narrative consensus.

Proof types

• Data proofs – hashes, measurements, external data snapshots
• Event proofs – verifiable occurrences with timestamps
• State proofs – transitions derived from deterministic logic
• Attestation proofs – third-party validation with scope and limits

Verification flow

• Claim is declared
• Evidence is submitted
• Attestation (if required) is linked
• State transition is executed or rejected

Threat model

• Oracle manipulation
• Replay attacks
• Double-claiming
• Selective disclosure

Auditability

Every step produces a traceable event. Proofs are versioned, invalidatable, and auditable without relying on platform trust.

Scope & non-goals

• No asset issuance
• No marketplaces
• No investment or legal advice