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 0x1b38818a31d372fdac6e6fcb5cfeed739fbd89a42bb7450f22c46ddac575b023. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7133b75-7471-4d32-b010-6e5ffe74d2eb.json and https://artists.proofprofile.net/proofs/artist/e7133b75-7471-4d32-b010-6e5ffe74d2eb.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 0x67762840efee1f2ad0bf4c27ad20dc58c047a476d87717b60cc633bf3aa610b6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T08:23:53Z), 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/QZTAZ2438874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cf782e764efff995c86c34a8f6de94b376ab41e9a6f6a4f40dee39ec7990f3. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:37:36Z), 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/QZWFK2462635.
Machine's Got The Groove / Stolen Soul Blues
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470a6a8e242935bce740fc978167b052f14920df51f123d3fe81f40d6054a280. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZWFV2413002.
Merry Christmas, Happy New Year (Remix and Self Covers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08aa7efca660076a6951ef533289d5262610fa057fe036d7d8553bf2be8fa280. 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/QZDA72576085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c8b6b53e9cd768140e9d82f7f4afe010db8365d2e9247c9a5d024ae540c447. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZES62572250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ee59596a33b16ec98b363c8b55508943e94dab4ba1ccaa5bb3c6578690dd2e. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZHN52576934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1075ec4299723e13027e3016531bde76105a3f5deec8706dafa7c44806775a. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZHN52576935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92c1efeeec8e1dc1de153c77f062c7ba2c75ab0258764871c94298f56ba5ccd. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZMEQ2554413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca5ff986dc0c691cbc832805647e360142dc99142f43f72bd1377cf1dfac94d. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZMER2570840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae338e51127a7ff841a6c1778dbbf4962652bd3bf843224ef9e381c4ba94040. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTAS2563701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74375f14617095ba24dd92513c1b41227728eceaa8da3059640b4e1bde852412. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWFR2515960.
Vampire's Feast (Instrumental - Guitar Feature)
Vampire's Feast (Instrumental – Off Vocal Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa0d654ac52b723557d4e560f5569b57bc6bad90ad7cf75ea08d7923e97169a. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZZ7M2562120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b06da998c29fa1bd566535cd14df608aa928aa84dcfc71180c74bf22eda8b8. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZZ7S2543029.