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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35baedf5d64040d879db83a4f0bf20c0cf369d0e51266d8e1f3b7ee2d1a88464. 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/e2c68641-679a-47d4-9364-17e886775b92.json and https://artists.proofprofile.net/proofs/artist/e2c68641-679a-47d4-9364-17e886775b92.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb431abcafe61c223b0ceb09ec0cff4a3f1e62131bdb3b8ab204516c64ec0f8b. 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/US4GZ1503617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa596ce300b489c7026e0c4ac9b4727e84a7a26c02569bb7a6bd1738b87078b1f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US4GZ1503619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae8e04731b8d8db2645bd722472c3bf2d2dcec5441365feacfdaf5c9e433108. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US4GZ1503621.
Daptone Records Singles Collection: Volume 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88db25ce2b3f9cbf7af7ea37f15ad9aaf7279e15382f8f82c4ef34a24fdaba7f. 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/USA371138399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf990b81e389442132aef13615da81465149d9f34cfb4f89762feaa438c5fa709. 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/US4GZ1303108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c034b5214b78fd11ceebb4b39a13339d4e094e9df3c0b336f181d77efcd1e5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMBZ91507227.
Daptone Records Singles Collection: Volume 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe6f6050f161b7f05c2141418b1008f3f2d26578aca914f52aaddbf5e8e4499. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6N21986927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d11e054fc000949ea4b28114a4acbc3c1368ce355f3abed09ffae89141985c7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US4GZ1468201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ed7236a410ac1d326d524e781404319c2572cc7ee27eb8c7ff7de6ef810836. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US4GZ1468202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3feda5e083a791750506ab98a44643562de4d455bc7134e4dee1d02b23cbf28. 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/US4GZ1408402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd1227d6d5301d0310ba7bccde606699ae31e578e86413c375298578a2337db. 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/QM6N21987067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13087dd84fe60bbc3f4c0d334dbc8fbe21333a4227957d1dfa68529ab11aaed9. 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/QM6N21987128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c1432451fcbe095a05012579916f9a4e212744aa1d8ce3ce20d1fdaca1ac4a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6N21987129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c034b5214b78fd11ceebb4b39a13339d4e094e9df3c0b336f181d77efcd1e5. 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/QMBZ91507227.
Daptone Records Singles Collection: Volume 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca907c01f0e45a5fd912a4263ce4112bbd82f57e125902aedaf56325d26526f4. 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/QM4TW1957306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34752d3b83b779c33293ea02e2a99c513e9515e6e3362db303d729b10501c43. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:44:57Z), 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/QM4TW1957319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c992c690706e4b5568cc39b5c0677a89764d18e77eadc4f1f2dd068693fa55. 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/US4GZ1503510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28604daa49882eb3b48d70b5d74a0497c0a55861dd9c0c2ad94ad2150df91d07. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US4GZ1503702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd258d54143b357f365328da8fe1f92610b478e984dffb95f6c86b24131ea4ac4. 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/US4GZ1503703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23409ee6d204dc2d6ca51633bb72f764b018b2325e669d1aada5a25fda5fedcf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US4GZ1503705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92bf464b7c00472365884d7c295c436227f9b9458b171c805a3d39a78534b51. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US4GZ1503707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fc16b1fb7714a9011eddedb9b86fe8550545362a30e2ea5b9d5d0919431737. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US4GZ1503708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05cd388461e69417b95a8e1cd1ffab9172885360d837a48b5de7fb8fa414253. 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/US4GZ1503709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da7823db3eaac5530cd3e8d3b232b6bba392b582fddc57b2eb362f44b991bd7. 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/US4GZ1503710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9b4dfdbe83346174d6123658433ae819c733f4c2c610638b3508068086cea8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US4GZ1503711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba135a435cea1c777391b36193189c04d92e62ab578a06da7497e9905eafbd8c. 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/US4GZ1503502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482e06060970f89ba894ec547541a44297a959a5d6c13c21f47ea517a661a9db. 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/US4GZ1503504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba658e71b41a5feee8912bbd90e540b70356e654c08a87f63cd8d1a1db290182. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US4GZ1503505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661be0d1f6f1e3096dd0663addd7c3d106c85b9b9ce84bde7402efc75cb0406c. 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/US4GZ1503507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25792a47be03c69feb63b423a6f1e9337efe9fb53bc4010fed2821e00eb0121. 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/US4GZ1503508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe496e3de080f6cf1a056cf56a5702094853488a75d532798421e5b17b959ba51. 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/US4GZ1503509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c992c690706e4b5568cc39b5c0677a89764d18e77eadc4f1f2dd068693fa55. 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/US4GZ1503510.
The Daptone Super Soul Revue Live at the Apollo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05139ae5a3441bf77691a8b5364100dc44649906ef66016c3ab7cbb8972544bd. 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/US4GZ2106903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbb4cecc6ba86bb827814dbd5cafd25bff878c5b9a8d8a822b821fc3d7a124a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US4GZ1604101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fe9e17dd538e5b7772c75ade4fc7c2d3307fa8f2ae2b9e24b32b2f8ab7f645. 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/US4GZ1604102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ab80ba3ca4a6f75ed3e24d63787dd4752c80f9c29a15b9f1e8f69a88ffa854. 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/US4GZ1604103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417b6af3c4397c34a3e43f27425fe26401f113a9fa425066521d1f738527f8c0. 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/US4GZ1604104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c034b5214b78fd11ceebb4b39a13339d4e094e9df3c0b336f181d77efcd1e5. 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/QMBZ91507227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cb9af9373ba714bdcd0abcae968b81c1099f4910d71fa61402606f47c53a5e. 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/US4GZ1604107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a981886bc4e6a0f8326c584ba2cecf969e020178225252ca5738a36ee8e0c6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US4GZ1604108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e84edc0e3135c5e973fab132fc0a10a1c9ada0bfda088c5285bcc431e96e839. 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/US4GZ1604109.