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 0xb3b01ecb0cc6efb6e57589a8ac0a4c7878f5643d433879a3ec7f25bee37d7c3d. 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/abe7b3ff-4ab0-4454-97ca-dbb242c6f0c1.json and https://artists.proofprofile.net/proofs/artist/abe7b3ff-4ab0-4454-97ca-dbb242c6f0c1.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 0xd74734058cc7592a9520c517f28297127bd6d0c15fb43ff610314c880bd12add. 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/US83Z1914855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f12c5fa905c88142808a821283b85882422d7c4ebce916c49bc4a326880a5b. 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/US83Z1914877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3ed28174fe4738ca8ab85101fabfcf2443feef35c47c2c1cb96c2d9438de7c. 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/US83Z1914879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2e0b12b29647078bc480e103968324bef710e3836894a715843fc4ea764d1d. 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/US83Z1914874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ad1bec56a7f596e8d00de53c30ada35d94d58dd63e9172bf6727581e343f17. 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/US83Z1914866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3370d26b718166eb6f13e7eef650c5c050a46cd11b65a4a0bb2f7de5e5d0ee. 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/US83Z1914867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0105d3f6f279167ef3b9a55cb2cadc32ec45ab5b95b0b414d4b7d0c4cffdf908. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/US83Z1914859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803c6157c97c841081cd2ba3889e4c194638bc24c5f6035fd8e5b9678fff090b. 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/US83Z1914865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29626850f066a05afb818f0952bc69ef6821f02d239d1385aa76a03733324efb. 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/US83Z1914858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06db2b5a4f8e1e338594de193d20b0d0815cc0ee37425b598f73649793354e61. 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/US83Z1914864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99873f0692b6389d6edddcaca6c327dd5006f13c700b54138de0c9ab7713cafd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z1914861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e2cf9e39e025323ed3d7b24096777796ebf384be7bc6e49b08077986b64827. 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/US83Z1914876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e8e05fde8ce244917df9108de13978c5e0f4ac23805a4e19995d27dd7c8ac2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z1914868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bee353028813d3d22490b781ceae4394ce478f0a61d77214a35ea77c7e8336. 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/US83Z1914860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5968279ee231349d44f41431d065380d3eaa9e111451ff379ebf0aab9c37720. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US83Z1914857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d1b3f9f4b24c629a8bac5a13d89114b2a2b85eb6112263fb8c02ddc6347500. 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/US83Z1914878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860ce15825136a01b770326d813d5259857058b5282729dd2add1ef9d068e24c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z1914871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5703a60dfbac2f68a010e4878ec0c950a3f6414babc317c13d4cd220d3bd8080. 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/US83Z1914872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda535e500fc474cb61e21b6eeafd21d1cd0523d1819ba07ae84a7e602a01f3b. 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/US83Z1914875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd444cb18ee5a2b9b81202e3b5c79d7675252354133e45d104ac48d0840fbabd9. 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/US83Z1914870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661c660d2af6e69e7465cfa20b3332fa9975891e674fafc53a511746699a5739. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/UKSP42000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fac9406589599819378d7d2c6eb85c192a0fa7ad89e7655404c149075cbd661. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ES8741825117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620b4e9cd5a73766347a5fdc38e8e81a2eceaca207e581b133907d68d5132f18. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/ES8741825217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e603ad01dc0dd51fa35e1c3b58fa141bd33bf1da53fca9b299ba9d914764b03. 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/US83Z1811183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe30d9c718afad1b8145bdbb9dab1386348c9ddc533404ac7a797e8f12a0d67e. 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/US83Z2018314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3f99c2df5934b51ffcde3a16d7c240a2b5ab372db72ebda9613adefcaf0cff. 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/US83Z1909462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e949f066ccd70852ce5e0b0fdd38eb53d9212328de6ae1792c723abc66bd285. 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/US83Z1831753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd662d498542bdb0a0a2db469cfaaf12ec7746a74548a87b86c62426317f07add. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z2013861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372fdf7d4b41bc830aaa99e2575bf3feff004fd254a62dda0beee188d78ad5a5. 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/US83Z2013873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76d8df91f7651c641daf0540bfb4af0d42010978b90b72a8a781f716329b708. 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/DEHM81800368.
Bar 25 Music Presents: Sounds Of Sirin, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c156a1ff8d7ec02358f44892c863a67c269c4cdb896389b2531d6735a85ce6. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEHM81800603.
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 0xc03b1b505308cb5eefd50c241e52b6126f1fd57ca3ce5c37e07444d98b3d47f7. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/US83Z1922602.