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 0xa9bacfab04548c450e92354dc7469cd7371d7e830366832130fc93a8046a20b9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d9c525d-3fde-4d7b-a8b9-1345a3f93b4e.json and https://artists.proofprofile.net/proofs/artist/6d9c525d-3fde-4d7b-a8b9-1345a3f93b4e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x1ece811147f4c96e7bd2894a5789e41a8d5d33f3a9d2dd3138971e1843047981. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/SE3QD1200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bee6768634aa5103c6b4061a6d66c054808b8d71aefe5c9d6734b0d140f746. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:35:29Z), 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/SE3QD1200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fcd1cb66aaa5ab2a9972c5b7ea555d288a5d32432481759a9a7e86dd7671af. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE3QD1200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ea13446245ee019900e773fec50519a80108447197d90d35a49bbe17832211. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:00:10Z), 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/SE3QD1200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04d2686e917d67dea277dab75b66d5390cda398547484664e8246c70b1d7d3f. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:30:24Z), 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/SE3OH1403255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0408251ba2c3efbeb65b7e7d005152f605d90434132d5409f1c6144e4655f32f. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/SE3OH1403256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80658e3dbf1e32624e05b91581d7d884872159c8ffeeb10ed68b0961ca23288. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DECQ31500061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc71d32523e7badb4df9171bf7d64ce3889657046c33f759bdcbf9e65d62a14. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/DECQ31900001.