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 0xae2da5bc931f2ae8fb78b617f6ff963f3f6351499f55c6c4d1d313a26d442037. 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/8906b651-a16c-4da0-a261-d97a1727ed4b.json and https://artists.proofprofile.net/proofs/artist/8906b651-a16c-4da0-a261-d97a1727ed4b.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 0xad2f37c93eeaacca7c9411f37cd230419921c995db7a35be8c6ad0015bae1f74. 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/USTB11200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd220534b98730405b2d2be83e7254e0cb8b85b78b958e41f77b20a2d4704d166. 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/USTB11200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb40c8fe17c7414627ba324c01824c8cdf3ef77d9b5bd308a4ad925cdc4a172. 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/USTB11200078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35b08f7ce135d428ae1590c56e6bf26d4c0fc7c675e9ffaabc072c0f5f4f6ed. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USTB11200066.
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 0x7d3eee715b592d841b8338ca1ebce9660fc5ec596b8fede4607175bc0b042de3. 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/USTB11200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecbf0fdf96d5854c2efc10cbf450bf4e9357a78c2b7bdd0caffc93d09421baa. 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/USTB11200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65e9e0811a8e8a412673ed01082433a71b829b49d09bc968e1b7056a193afbf. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/USTB11200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a90bf92220d6c937bd06f0c5e0208242804d695db4024eef90822b7f3e73fa. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USTB11200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51db93983215b308b519eec23f012676e6c6759461fae64e311685d94d10bf76. 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/USTB11600116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf525468b654ccc68cea129dd576ec3dec7041d64714c7e67b86830a9abfa98d6. 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/USTB11600117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0adb5f57c08b971cddb852d14b365b83661bfe6b7cfc83c520582439b13b7e2. 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/USTB11600119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e3f2c8418981232454470a4c033b6e2132f691e8e6b06e29b732d4a328d876. 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/USTB11600124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090af4da6ed45c0ca73dd9ae5d38c89ea9c722cc132acd67ecbac694ceec3a89. 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/USTB11600125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde617a551783cd3e8895c9fd2455d5c46b03cc9dda4ae3940dfd1579c83cbae7. 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/USTB11600128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178cdb30730b9e2e1d7baeb3f227e6ffe589f762faf262d704aab581b7210c04. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USTB11600115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2093a8f73408456e7ab73059ad354af986983833a32bd2931698feed3ddfcce. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USTB11600118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ab4d6a261952256a9b8bd381ebb0b5a12d0dab5e4df1338858c427f149ca28. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USTB11600120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec478d9356e34a8f152724074ddba46943351b8e0f889b87de0ffb590e716c6. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USTB11600121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282313ccd70b71c80843202dcb566f141d53f566fbd790ab127a8a0d34eef550. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USTB11600122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7348fd04e8b69e6b7e46ed1197d85056d34a6dc03e503501b64d13641c8a53. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USTB11600123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd913638ff3e64a1d4aba3ed31a3760b9c0646ff2b1721afbf631aa47f056dd1b. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/USTB11600126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711c37bc537d79848750b0ed69356000ca870cf0c0798f8e1cabfab7e6683dcf. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USTB11600127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63cac659d1b5837dcb8e907675f6ef3eb776169c618147d1d201d3bc13b39a0. 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/US25T9920783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c50e45748f1f86554517af7d7a32627f9bd359ae6d6a869760c7278dbff079. 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/US25T9920784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07626df3f2e8c2e96d0256198f4a4cfc4dab63c03c3ce0a1ab7887ad8b32ce7f. 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/US25T9920790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7715253a1b34e75d05381021718aec4bb6095041a78252c27722e40fe72aa7. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/US25T9920780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f8bf526f47f6d46b2f93ad67fd595bbcc21944a4bd55488f9b6017d27683f9. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/US25T9920781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e63176a6b7dd63b951f8b652e16634c98a36fdc58bb63741d6a82aa9c158c08. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/US25T9920782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cc58adc11375d4fdc0f8be7f8e68f4f07fc5f64e601084696e69ddb97d81be. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/US25T9920785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6e7ce218f0afd4c82c6e0d9b5bea9fba842d9f23bd6a46330d41123e58ff60. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/US25T9920786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e906c8a2166a384bdae560761958956f563917dbfbb281683e434b2c371d72. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/US25T9920787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc221033cc640d3919f05c0eba728ee4f34f72310c4cdec56950347d41a88491e. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/US25T9920788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd98305540bf1ecb1c4c95401e752aa2fb472227deaec13fa588d0787d841cac. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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/US25T9920789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f8d78e97777011f9f6c57ebd37c1bfe53151e6fdb111028974e105dae9a073. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMBZ91665717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffc9c67e82723a882d0acab96ae264fdeb53d4d1e6b8afbe028a4aae48258b5. 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/QMBZ91665718.
Things in Tha Hood - Warren G Remix Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38ba310a6043fed13282c2151de7b038cb6685b5e98c59e5a37d0ae57a92227. 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/QMBZ91665719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56293ca8f97450003a39b184507d1761b85528b83c29deaf8a46900cfd52ac11. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QMBZ91665714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0148f3dfbbf67cc5e55d528a783009d7176a25ca6ec87ccce700965f1b67e5. 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/USTB11600281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9f1a8e74ddb40048fc8dbce5d416edf88db50b6af4006a4aef4644b7fcb523. 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/USTB11600287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b0ef1f351277d7e3432d84a10378be9b1521c669791de41d1944e633860539. 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/US7VG1737939.
Polyetheral - Polytechnic Album Sampler 003