Spit or Spits may refer to: Common uses Spit (archaeology), a term for a unit of archaeological excavation Spit (landform), a section of land that extends into a body of water Spit or rotisserie,
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a194e138b3399428ed8a62e83e01bd3c9deb7fc0868e6b73702f85d227dc499. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f17e2bd1-6939-4950-8f7f-2fa1ee89281a.json and https://artists.proofprofile.net/proofs/artist/f17e2bd1-6939-4950-8f7f-2fa1ee89281a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).