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 0x0a98c22077dd7f0eacebc3aa2e62303c24bd75ab77a77fbbf2afd4fc969ba66e. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2fc13d6-6d7f-4997-9d94-438cb27d3344.json and https://artists.proofprofile.net/proofs/artist/f2fc13d6-6d7f-4997-9d94-438cb27d3344.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 0xd7337a45e598fe7177055e9abf086672cdf60b3622b7cca495495bfee6ecfd49. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CH6542475434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae97bed90e21df9c580e81523e826b00113a8189c76669529239586f4a8951f8. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:27:10Z), 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/CH6542475436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5ba913c419bdfd14cdcfe7f172443b39466bc228711eb5f6e015446c96603f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CH6542475437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93bd7e60a9aad29ae319eb5d91c98dfad57445aaef65e23ab581a2322083af8. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:35:47Z), 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/CH6542475435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cf8136b3ce911513b60ce051bbdb9353536812a69f16d9a5b84dd9cd8911ac. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:03:02Z), 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/CH6542484391.
The Trumpet Break (Radio Edit, Original Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfcee9a3b2f5b2f0f38c1bb9425104e2f5841646f110dc2d7839b7c95a3559d. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/CH6542501298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548d2e3b0adf2309994d9ea3d54278ddd7dd80ebfb8f9335fb9d515cfe8f413d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CH6542544912.