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 0x79a501018f576df1007988cad8eb90726d8177fe9a86cace6498b812554228c9. 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/0a7d4e80-770b-43d0-81b0-fb6cd2e1b9fc.json and https://artists.proofprofile.net/proofs/artist/0a7d4e80-770b-43d0-81b0-fb6cd2e1b9fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Swinging Instrumental Jazz for Good Times
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 0x809f75070d032bbb7316839a6f2bbe86ce971ff794cd5172ec4a76a8d9d01e28. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/CAWHO2015725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4afd013d3f40bf3da1b1777dd74d5043e7628cb80325270351067c91e389d84. 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/CAWHO2015730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f3873a0f9feb9d346bb822f3172d610d66cc9f34f1e0d0b68bec17b74de79a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:19:18Z), 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/BGA472335418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67c36127b25998aeb506c5aafaacd313fd68d09d03efdc3d1db9751aa433a70. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/BGA472335427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8b062768e738e26beae927411f1c79d5aec70a91abc438181a0ed53bda33a3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BGA472335428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7732a37341c528d88ccbc295644bf37db8ddd0763f858973b70da326b35958cd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BGA472335385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20af9e8d31168113b761afe49c1494f4a9861beb17011b110fa6453f6f9ebf0. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/BGA472335388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9144052bd7b38cf072a438746f3456bf1e3b5a93a4d1b3ea38b376e091c7fb0c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:34:15Z), 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/BGA472335390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98c3723e89c5c02927d49489e601fc6be51c91d0d535386aa7e73f97124601d. 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/BGA472335399.
Uplifting and Upbeat Jazz to Get You in a Good Mood
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb602d59b3f27c0a9da55e2d0a0dc0571cc3a13022202e53af33466dd53d45c. 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/BGA472335369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952be6d401a147a3a242563d019499829119dd587907ed3df2b88947f447f411. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/BGA472335367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8102d458ea7ddb25fe9c1f23b6642c7d1faddc2ed0850bd7a98f6284b63e69. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/BGA472335361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19abdad1176437f82c6b78923c0216adb05017dac2504df397790982713d48b. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/BGA472335362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602a5eaeada55b2acb6915acb8cab085b54ca0f1ff3b7237e63658eb285ff326. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/BGA472335363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12fb16dd86c27864f5ce66b411fc7c41a28b1d33f10fb3aa6a31d9645318b887. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BGA472335364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafebe0bd5963ac521bc37edb6d5a6b7cc8255276d589fc9f0f9e325672b823f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BGA472335365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e0fd9b0a56d927be68cbca2e4837abc43a4188cf11cc78c1c7a0417513ba40. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BGA472335366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336ecbda7d888ea62d6bcdd6a1feb0dfd9e48c70aaf812234665378ef1354cb0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BGA472335368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467ec6a6ad439e86e5ee7b47266ceb6a7e20ee94248a4402cf18cfcaa0acadf7. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:24:42Z), 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/BGA472335370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc7f551787ef8751235aa6d94834abf2d1b4a4d64df9a0e7b37a6999db09aab. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BGA472335371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f5617f890b236b74e58d330bc9a900eec215120ffdd907ab635cb8b998a9ad. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/BGA472335372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed444df1f61abcd9f911378dfedfd945a20b8538f98e7f53a73443b94563d2a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BGA472335373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae045c1094c3f531ece79bf1208e889d52155ce85ab6233b5ee7f9f8eb0cab1d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BGA472335375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3005b80b1544fff1d96f97a6621eedbff5b1f128a2b3890fd1a43b64e70e44ce. 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/BGA472335376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb46fe208722e3012e4e9077475f261e27c933c726369bdf8adb9e53b0b289d. 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/BGA472345799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5a5e874ed66b38b036f09ffac73018110fe8ec182ecf04a50de0928fc58dca. 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/BGA472345801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ff811f9eec4718b53ed596217a8707e27b593e528cd210ac1b6edbcb8e3111. 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/BGA472345802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dc86e7b18dbfb56ee1ab07996fac7e4d9ac316845fbebdd50c9a3c8dfb6803. 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/BGA472345805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbf0bdd71bc6c81bd8f86741288b7c37d1cab326cd7e47c07036e53c60baf56. 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/BGA472345808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7915e1fbce495750de73b5b0443cd4fe611c4c78d294e4f82671f47536c6c477. 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/BGA472345810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9efc17a6b36e3f6ffb612724fabfea4a84336480587ae795da97c9e265653b7. 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/BGA472345812.
Happy & Upbeat Bossa Nova & Latin Jazz Tunes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741420e4a413285dfc4d1fd73e4e52d9cb57de20f0a4e1526289d191ecddf10e. 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/BGA472402440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8a3eb2e85b474f56b638ad193a032eb642f54ebc01bc820bcafea3f0018d09. 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/BGA472402441.