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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1105a6831219d5c7908275710c7be1baf9baa6090fb1a4586a2d1c39db811b0. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d11c975-fdd1-4d00-a2fa-74d2e34d64b3.json and https://artists.proofprofile.net/proofs/artist/9d11c975-fdd1-4d00-a2fa-74d2e34d64b3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ザ・テンプターズ ファースト・アルバム
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ab5ec3ff473853d882982c621e311b5d7e2839acdfc0638e0b58dbac3c5964. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:56:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE406800690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd41334afc3683cfd8b6594ab73cde26513cc02d6c05d39a4423113fac4e884. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE406700550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f299318b954b3a201359014908d831af945e406e06808aa258415464898420. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:25:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE406800600.
ザ・テンプターズ・イン・メンフィス