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 0x5b3429562d745e34bad172465b9e1fe1706f65833fce00847f6cec7012660207. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdd9edaf-6f3e-4ed4-a422-55be57d1d6c4.json and https://artists.proofprofile.net/proofs/artist/fdd9edaf-6f3e-4ed4-a422-55be57d1d6c4.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 0xb4448362423292f66e7ae18b04b5b087666a92b192f82e37435b27c335219f16. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZFZ72013981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ea0be428606e6589c2c1da5085d57ab238c2efd965b4ba001febf81a0ebe8c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZHN92003605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12aba4ddfcae2fa5f5ccdb5f63d76102f0b9ffcc027e090916057992c85ccb04. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZK6F2003856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e74321fbbdd496613f782d15e5206dcaa111e8f3f32472cf1279fcd93de24ef. 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/DGA052074195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869b8ebe69432ba2ce9dfc15d465c4789f24bfc3072a1b0e6ff1a3b9ed8a9374. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DGA052074196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebec89ed78f7e5a779efc91ac517a839152d9681f17e492d9d27eeb208d679a. 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/DGA052074199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a8dc1a7a19d921bc424d24fae3eaf98aeaf450f1a9cba764bb9c6c0aac2b9c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DGA052074201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3832cdb68656f8fb7f997cdbc69dea982228d80f8a03eb314ffb08e9a75e5258. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DGA052074202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d4f045c97a0bfe1b90eccc5bf08c52de94e7ac0cc9c8ad28a68e795a5bcc25. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:38:12Z), 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/DGA052074203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dfb8ae7627f0d6b112df2c816294875b100876ac034cdce8c5744bde81b306. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZK6M2143961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0441156da1d664567221400ea43a1be6cbd2a15a68d868c54ff32057534666. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:05:39Z), 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/QZK6G2116006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234d5cbab901ccbe1c57508f4ac1c951797e44cbc85a7e16493bd106e3e474f8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZK6H2153514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18f3d5991dc45996c515fc6267f668422d1565b35c87c410a26e992b31bfbc8. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/FRX872180147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dec833cbd5a099de872d2ad97a8b4a8c7fb99cc8cce197efdc09a7b307186b. 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/QZRP42181358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f22da51e13eb298e978a4e177f7ce3a30b41662620d7286e5a1b77c173d190. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T03:53:56Z), 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/QZRP42181360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb93bca27f463c1bfccc6934bf8c63b239088a8a5b085868b462bc651d92f1cc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZRP42181361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4898bf631073919363c269b2383100e39ba54dd8535df811d79aee26c2d6f2. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:55:48Z), 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/QZRP42181362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4edd6dba9e803e56d896f87bdcf9320ad45974342c5a4cf33d1bb627427984e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FR9W12211402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866492db0af6a1e1fb13d0828b08451039e34c324e596e9a6a04ab0f8264b59a. 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/QZK6N2237323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60362702696baf58ca8a052c26c6f9c06b3d623c7408c61ac7dc61912cc43cc3. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/QZK6H2299400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec63714f6a187a1eca694343fcc98350e5de0fae467c0efcec3df4bc29a980c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:56:58Z), 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/QZK6H2299401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b35b2221c9fc90fe3a8e1c616c052886d76e6a97894415f23bcdd7b74f1d0b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZK6H2299403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917ce7437ee10c1c5d8b1ab55b53fae4c76d6fd59b35eeb58d109c15d5e64447. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:44:36Z), 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/QZTB62285919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0918aa2a3c29b80e9cef1b5b50cb395d44344f34e7512aa9d8683f5401ff0054. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:53:18Z), 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/QZTB62285923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf033a226cc8df917047c9a4b1a664deb6e60c5db4fdd4e173873ed81c650c8a0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QM6N22371732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695733f957671e2056d4042dd687711fd379f073c77df5680e72e0c0a88fc01f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZPLS2302071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e59340a8f726f6e619b9b83b985d7fe6424362dc28ba56be31679af5b1446ae. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:53:35Z), 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/QZWFL2399038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938196e1fc2356c7bf5bbfd5b11648d77f37aa4c10c6d1f0e29e17d505604e8d. 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/QZK6P2491992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24a03f593b9c39a87c1c56bea095ce67e932463297b5a658508b0bd549f0e46. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZZ7R2473104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989a2773a5932c7b85b03c5fab63cd7e94feac3e018f0e860e98b52de8aab9f4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZZ7V2435050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7692ab2e48d5379e6c50dc96066fb44c0cf8ec1761693099265471a4cd25b4c7. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZK6Q2540245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72d3f8602387a917e8817fd7238f35b12eee38c084fd5fb4964aa878f1f462e. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZK6Q2540246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdfde103fb89f707bc416e4d40437bbbb59b4cbf1191d732d6634b704d90a2a. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZTB22560670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba88f83f4957c2589cefdc10111bab0cf30ac4234fab55dae0058246f1c226b6. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:40:39Z), 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/QZTB22560674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe05b1934781dc0758cea901d85c34e7ce0056f0241275e16e78fead171e67ae. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QT3FE2536699.