Comp, COMP or Comps may refer to: Places In England: Comp, Kent In France: Comps, Drôme Comps, Gard Comps, Gironde Comps-la-Grand-Ville Comps-sur-Artuby Music Accompaniment, especially in jazz
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 0x5b124b79733a7074197f2d40015d3cf1a0a34ba7d99afd2dff2dc6201e11b2cf. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56a872cc-8ef6-4359-82d5-0359e6171ac7.json and https://artists.proofprofile.net/proofs/artist/56a872cc-8ef6-4359-82d5-0359e6171ac7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).