DELTA Witness v0.6.1

Trust Layer for Autonomous Actions

Observe a public source immediately before software takes a consequential action. DELTA returns timestamped content hashes and a public verifier while keeping raw capture artifacts private.

Capture

Preserve what a public page says now through POST /v1/capture.

Guard / Preflight

Compare a fresh observation with a prior DELTA proof, expected hashes, or explicit text rules through POST /v1/preflight. “Safe” means the supplied deterministic checks matched; it is not a truth claim.

curl -i https://delta-witness-api.ruphussten.workers.dev/v1/preflight \
  -H "content-type: application/json" \
  -d '{"url":"https://example.com","expected":{"contains":["Example Domain"]}}'

The HTTP 402 response contains x402 v2 payment requirements for Base mainnet USDC.

API guide · OpenAPI · Machine discovery · Example proof