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 0xa62c53df850e93926b89fb31a50053e97d9d7a7cd78b1e4ccd68ef894368cd10. 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/2ac473a7-9245-4fe4-b2e7-f091e0fd068c.json and https://artists.proofprofile.net/proofs/artist/2ac473a7-9245-4fe4-b2e7-f091e0fd068c.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 0x6f8cfdb2c144abc9c12f857440f0347ab029d4dfd814b6a4db94630bffe182ba. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCABN1397992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b3949ab88aca0b8d156a844721b010b89e385f7c1fa3952c5e36c1da11f470. 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/USSM10702870.
Breathless - Live At Electric Fetus / 2007
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206acf5ce20e08dc8417ed8da791beb6ed89faf9159955837ba6265a94deacf5. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/USSM10705967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c9b3a0dfa194b02941e8d3b55318121e2d46e772f5cc84ef3623d2d4e43be7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USAT21303143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ef130303e23e03241c0d4945309d41d1ff649b3e1c971f33ca1284346bad3c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US8JU1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98de257fc441119eb644943934d4a78fe1ad7b4744a504e989290191c6db9de1. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/US8JU1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430b77605b13330c3b95e9f4e47eceac680e946c0759a9868b14cd7358be4a50. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMFME2486937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c640c9dbbb87558a81ec0a22ccfe9a03776d09410d812c22b39f023ace63834. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMFME2486939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc1f541a1b8487de5bfca43f21b355a9862e205eff33116a406ed7e7aacd0da. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMFME2486941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944795cbd076ad8ed4efce7b195bf06b3afcf722da3d607a1a87e67648f79f54. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QMFME2486944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3314c581d6c6cbd98d05f7e3d3f9f3ffb2c022b9de0ba3c366eec19185fa0213. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:31:29Z), 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/QMFME2486947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e749a8399434f07455898835381c84ffd96a6e8bfa3daf0b395bac054cbccfe. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR08F1200120.
New Classics – zum Entspannen und Genießen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e749a8399434f07455898835381c84ffd96a6e8bfa3daf0b395bac054cbccfe. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR08F1200120.
Dear John (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa094b45fdcab69e72cd2ddd3bcb574e008ed369962b1aa1dad6ecfba69e88ec8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWB10905284.