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 0x1f1e6c8a8dc0f3398d661c32a0c458103c3329601bbb401872c680da7508bbff. 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/d5dfc49e-5041-4c88-83fd-0d4f9d48a729.json and https://artists.proofprofile.net/proofs/artist/d5dfc49e-5041-4c88-83fd-0d4f9d48a729.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 0xbed005568028f60fbdc37c7bd47af68a45472e8ec97a1e9aafc48dc662e54766. 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/USA2P2025902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae96dbfda2f832e89e1c126e0102283a56e21a5ae5dc4896795519c1630c56c7. 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/QZPLR2446503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed34e1bb5545de053ceae799ee4c8a5bd4a2e29a3daf5301b8ff2a6462dd631. 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/CA5KR2229383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88aa01028cfe20aabcf2452fe165d1764ab12baa08bd4de2aea771201c34570e. 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/CA5KR2228430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365f5c7befa9f013df8ca4a8f8d2ee948f2218bcead48df5a214ba5f3e2e0706. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTGW2100268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821099dbd2d32e211e067e4a0bdd68aa60a42a6c0de0ed5f30cb21532fd51167. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFU2190188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f461af05344ef57df537bec051f959631709ceddf3fa3f5a880d3eedb40b28a. 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/USA2P2125951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb16793793471f341102981a6b936f99f80383bd8cdf4ea77720951d7800347. 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/USA2P2124492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6143af676007d235e3cdb7272d72cd678b876d4dee3cbe74dc03d64600cfb185. 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/USA2P2123336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f26c5f2adc30c8e9d7e20ddef542f53170f4c6d8580cdc084d31d6820dda9b. 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/USA2P2122966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63b6343bb089190dea2cb0b509399eefe4fb74d545b774d92fed727918d5335. 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/USA2P2113220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9524f8baa43763554ec42ba2eab60ccb48bd2608feb4c1b0ea56a89899583448. 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/USA2P2108710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcecfddbae9508394081b0b068e6b4b51100f09f8ff3f055d9257be7e88ba74b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2102212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a1808ce9fd172a233adaafffbb952a1d9fc94922f7acce57906a17ee987aed. 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/USA2P2101805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ca04c9c211c54fbd10a777162cb20849730ad67f2f96eab4d77d9f8fd3040a. 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/USA2P2042681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3478daa2642e8ba35f84bcabe48ab93aab9e697712cde4920b628e98db9665. 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/USA2P2041951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7a0c2c1a3de759f6e93ea4a2b0266d3f7d02229bac8189ec9842ba22d75c20. 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/USA2P2031481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36c7c716c986892ebc71c8b5181a92d143aeb95f144e5782de1d058578079e0. 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/USA2P2029182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156692501f6768f5267b5fd659fe809f1bcdd1642ea83efd198abf611516fc9a. 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/USA2P2028406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b697e0b2148f49f861ff56392f68c4e27814073ef1b03417bf2efcbaf4136f1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2027659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be37f3cfb0f6a5f40213f0fde35c610fa560e6ff4cd1d6a322e3e29cf2143ff. 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/USA2P2026879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067d68cc4c41cfa9f215da5be532ad642789a4bf4badc6c79d7d2c5d2e020c6e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2027156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5555f0ec355382415782d9a2cf64ccabdd32226f139be352c57478ce807a6a43. 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/QZK6P1935209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b10e125696ea1b7fec9ba11905743548f6f08a4ecccb10fd5b53a035369dd3. 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/USA2P2027158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7871077e398651f067b3e4a26227d7fab3aa9f44252d6ffd3855e862bdb33a2f. 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/USA2P2027159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd945c00ec7620c84c7b0e01ff74b38187bd6845289c376ff9c00a12d15736e77. 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/QZK6P1934478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b0c718fd07794aea85a905a92b3c37b777b207a9f1a0dc0f22e26de3d0f4f3. 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/QZK6P1934477.