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 0x787aa114059641ea9ce736a98c55760342329aadbd00fcc67e43750b6f79a509. 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/bddcebf7-f6d7-4462-8956-e33526b99e30.json and https://artists.proofprofile.net/proofs/artist/bddcebf7-f6d7-4462-8956-e33526b99e30.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 0x25881b227160827757dabbbec03c9ff6593906b1a88f127ccb3b67f371432d8b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:33:46Z), 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/QZES82078567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb84c1e51488ae7e089f41d362aa4417547d1068d92db10a266c842701ab77e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:45:33Z), 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/QZHN82024916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52aaf4fe9fa1cae54e2fa7a46c008f70f27fc50104cc6423a4e49b19bddc3ffc. 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/QZMER2089240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c6bea5134b084bd0665e6eb6b955c672f6be6d51775c8daf3369de2efea9cc. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNWU2061835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d5140207e38aefb1214318250cc869bd3536649dfe6063b2c8b8cca1571004. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:52:42Z), 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/QZFZ32182488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e045733bdb913b0db1c27e3503594e5c548f561646c27fd2cdadbe70deebc3. 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/QZK6J2172747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6c1af65dc6b91956d6248972b48da060b29d51fcac9f32fc1fec8d3c506f1b. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZS662138971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4654b805edb2613a7eb16c4b5d43e1d625babbd0c34aa3e23ab3d99338966da. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:08:43Z), 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/QZNWZ2197941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa951de62dadf34630cc245cd1839b1cc0bdbdb7afa04509cb85d7f8cae534a4d. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:36:18Z), 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/QZNWZ2223471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacf12426257f2d18474dd625dc484952dd1fd18db484ca06acc50300d6bb3e9. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZTBB2232209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b195dcc7b1e57d33e020f430d6f8c90974d2530d627f1451b99b10eeffbb30. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTBB2232212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f55a18f668ee8ff7d0dc0eda654f24613aeb35aa04780668376c88e75de070f. 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/QZTBB2232213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6d4ea30f35abdf7af0d1c1ef60d98544c8b07be72ee47950b7768821a254ec. 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/QZHN92308349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4974f53e5bcefcef8c7d58c4c3cda30e4f4bc940e8769e85cf14874952717d1d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZMEM2362513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c077b6c5ff8b4d1b90867efa8576e2d1a7cfe253ff7743bf628f0bb5a71a7a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZMEM2362514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73e57e4b46f0c1e1bc07a858e61000fbb2b54e39a7e67f9055901ef8a965e50. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNWT2386437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab7bc0e181549d04b2ccf7ea6235146415b5975d64c51593752bba519d8a93e. 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/QZTB92333916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce065227d2c9fdc1c549274c1defbb46b99cc98c4e6cc6923891123bc9b85e81. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZFZ32446093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4a9bce0c4e40a51abc46d3c38a178a4dad5f5dedac26b146a09e5fc6bad9a2. 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/QZFZ62439006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7a1ef0287120be031a0b4bcd0d4b8961de9f5796fef8ceed23b746193e372d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZHNB2409611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4060672fc453d34db08fe4ed8e58b32baa70a31b7c88824050a6785d65b174. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:09:19Z), 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/QZK6L2432250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff37d908f8ebe3eb4822b732ac78cbf8828e5078c16e8828c0781a20b30d693c. 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/QZMEM2478958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c562f9894d91525bdd5c2444ba45c2bdfc278d419dde169b864f765b194031. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZRP52404009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29048d156eeabd8c175699342ea30a020db47c1c99afc5fa81f0be2f2cde2dfe. 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/QZTBE2482046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb703cb381be07192656f30ee8aefafae92374a767b795d00556e1532bc7f7e7a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZZ7Q2422283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215ddbca8a28a6562e543b5197ae17de838cd7f35521a7c336eb88b51e1a2f6e. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZHNB2576848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f041e6302a489a5e789819218316f98c0552a765c770f7f44b6048a7e4fc0ec. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTB32564507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90d03318c3b6109de3593407b87ab8817188ecdb2ad57ec92d45cef12849c50. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTB32564508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7700d8f5308bb2f749014bee71857c849e29e6dbf4092a974025012e57362a9a. 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/QZWFX2541928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1360d859f85a5f84cc50d45c33dbb6bd64eee7d9d3b235d6e03ceec67e843e99. 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/QZHN32370141.