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 0xb43ac7019b48cd3d9746439cca1afba7c666b97b57807e0fc755332c52b4d277. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3feb662-614f-4f63-a980-48d332238ea2.json and https://artists.proofprofile.net/proofs/artist/d3feb662-614f-4f63-a980-48d332238ea2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Calling The World [Fnac Bonus Version (France)]
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 0x6839e179cf8b8583be2db737728e82df434d65e4fbed3c909514388874911896. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/USUM70726684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb8270d2e6349c8bcfe609f18b2626df37199ea72c844bd12b7eaee9055e435. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USUM70726686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d8036a1f63d70c1dc7e28cc0e6a54d20901c197135838b4f72adbc02702be7. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:01:58Z), 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/USUM70726690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb8270d2e6349c8bcfe609f18b2626df37199ea72c844bd12b7eaee9055e435. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USUM70726686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3224018e962028d0df23b1b4c40e1dde6cabca6b44cad3cbce570f1cdc131ed. 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/USUM70726687.
When Did Your Heart Go Missing? (International Version)
When Did Your Heart Go Missing? (Radio Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494402f32d90c2d9ab2e18ba0541166b5cee019b221ade3ab9d1d938a52ca3b8. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/US8LJ0900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3040748ae4137d832aff5afc1fe7d5e70076e989ab5ea7d9dc95c12650f2118. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/US8LJ0900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b299a2d8ae3cbe71d64e3fb5ffcae7b1724e3d30f45742123ad666c9cfc088d. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:58:13Z), 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/US8LJ0900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363f58bcdc75d1d5ed73309ad8018403a9a4f06547a44a7167cc8e46e4bf7eac. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:38:50Z), 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/QZ2UD1611000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d2c9c7a3f4c3b1100d3b348ca64b3bd9775c6c10ca7c8e851445703a127ff6. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZ2UD1611002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2928596fe62f83af6aa6fbf76f987d2ff28414b5674a1a2823d6778871af7b5d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZ2UD1611004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02054166a107c0828ce54395ba9ec04883080a8409402fb5b4f98ede06352d8. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:24:26Z), 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/QZ2UD1611001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111c79c438e180423421669fa1732424087c9cdd810ba75e776392fc5e1638a3. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:49:40Z), 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/QZ2UD1611003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae00419d5a06797002e34664ffea1f430f4ffa0a7ddab75de150178e335b0ec9. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USQY51754470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0654cf9344e48667ecc1b3382aabe915fd645c1d066b31e01657bf671c0bdc2. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USQY51757556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ea212507b095a55db0a01b9854449223a5dd5c4eed8195edfce94968538652. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USQY51757558.
Time & Time Again (From "The Unicorn") [Original Motion Picture Soundtrack]
1-2-3 (From the Motion Picture “The Unicorn”)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459e617c684aa828d8bc813763badb49799ee0e4895b3e9dc42ba0235e55d2fa. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMCE31902030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef096d8f7bb75af875db076f632de5dad16c00bcaff8df32699c8a6d21cc0ba9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USIR10300185.