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 0xd9ed13872232289d9f59fce754fb824c975f7fb422d921a8ebcbd2c1e71c5e7f. 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/d72f0baf-c15c-444b-8644-a4c5ba57f63e.json and https://artists.proofprofile.net/proofs/artist/d72f0baf-c15c-444b-8644-a4c5ba57f63e.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 0x2f0d532c3581358c9c14e5225bcbb3e58648b97ac9d94dd36b77d53c09dd7bf5. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QMPKX1457769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16190b013b8df2abf3c0760d941aaf72905d28df4158f1209bee086779a3825. 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/QMPKX1495292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9041099ec6cb91c7cac75e0a7d2319629cdc9a5a9ca94abc60cb15e31118b86e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GB8KE1359837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a2838c12a1e6ae59b34d8f4aa947e6af37558f027b3d2f417fc91d18b725ea. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBLV61503040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6045d1da64dc35ece2b711e330a5decec7c7bab951e009bfede45affb6d667da. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:07:08Z), 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/GBLV61503042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6ef415402b1234019f0cdf3aa83e73bf7a93173b7f364b9119f55f0e4b9462. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/NLF711704075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4839037b6d0e4a420f45b4b8d237a5fad3a64d650594e004fab7f4dc1c942298. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX201711793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf099672f3f4eb373d03336c72f156080142f5ca043ec76b98d0e3b21370df3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBEWA1500333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0683041cc3d7df79e712a927752b827c7ac33ec292cfcb7f2f554eaa21143784. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCACN1633680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01befeb512129adf3ed4c0320b437d5a07fce143d3881d77402d76e7e9ef478d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USQY51490325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8c478685d906d3cf26b0a512a4c327f6a1bfc4601f2293cca7452bfc5b55cf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRRBU1600031.
Deep House Top 1000, Vol. 1 - Armada Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86dcf481d7d3aaf75efff5352136b48cfe2760bf3e6ad6bcdc6d2d06c01d2a54. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:52:54Z), 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/NLF711608103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7291f1eaeb55347eb59a9fb83af06ee81049fbbc157bccbb3e1279a9d851b8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLF711708206.