Pitch Black may refer to: Film Pitch Black (film), a 2000 science fiction movie Pitch Black, the boogeyman in the animated film Rise of the Guardians Music Pitch Black Records, a Cyprus-based rec
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 0x4b1ca0875dd8e2e75e16091ef453ea6c4b7eb38714243791af81c6d3bf3499c8. Chain 2 (Bitcoin): anchored in block 953923 (2026-06-16T09:51:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1cd08c9e-1345-466f-959d-0862cbf0b2c0.json and https://artists.proofprofile.net/proofs/artist/1cd08c9e-1345-466f-959d-0862cbf0b2c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).