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 0x76299e77244e7fa27ff141b271dd3bd193b3ffe780b1b6791f03c226270da292. 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/56224ff6-2d68-4614-9429-248fce125368.json and https://artists.proofprofile.net/proofs/artist/56224ff6-2d68-4614-9429-248fce125368.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 0x7f32895f1f0a5fd73dbeb7d72be8c9db36f24f89b5ce47768096b97f6988b32c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR59R2266028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0f1eab6a648dc8a13b69020b8b07f2c0c3a88692e9e6dd49726ccc95c24bde. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QM7282385912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ec1d50acf128b8e63462aa38cfbd7676336644db19074da5c9771f0e05f53d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:11:04Z), 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/QZW9L2369594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac052aa5e91941a243a2d2ac97d72ee59342364cc440e02eca080db3489585c. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZMZ92479681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44affcd5558d6225b4162fe4438361c7cca65415853634d4cc834f7f8eb3053f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:56:16Z), 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/BK4DA2456541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec426e5129eaaf1e52e1f5c9872561be4232ea31bd52470b170a550ea81420e9. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:23:50Z), 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/BK4DA2526099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afb66ea6d185f457e595752294c222922373b333bbbabfa9a1f9ffa16f71bcc. 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/QMFMF2386411.
El club de los Graves (Banda Sonora Original)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cc1c0c2d8dec15b6866fc94192f34e556f46dc1aec69bce213a1f35a60b28b. 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/USWD12216710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ec7c9c60d739740983675d6af3e3bdac6bb0a9d66c52cd6961c8f2195c2464. 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/USWD12216713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b218f03b66871b3cfd942cfdd2ae6d3f9678b6d4ee80040233ea67814ec17e. 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/USWD12216712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e147d4ff56d99eb53912f716dc67a795306b4d96a11ee86bad088d85782038e. 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/USWD12216716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c58fb371273f0fb5da7061e54c2ce0957bf7f00d360eb544f8a1a447b2690fc. 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/QM6MZ2279414.
La Reina del Flow 2 (Banda Sonora Oficial de la Serie de Televisión)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff04b91a7240de0fbdb8776f5c92d8b098e5ed18883a21cd7c11248a2f611eb4. 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/ZZOPM2108717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bc3aec078389a7e7e2a1dfcb7a32f8565e5384e448d2129e2cd872b552b437. 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/ZZOPM2108721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e0b3be37c9b16678c1d791c71e89fcfbd0e50b450dc251c705263c11c4925c. 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/ZZOPM2109231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bc3aec078389a7e7e2a1dfcb7a32f8565e5384e448d2129e2cd872b552b437. 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/ZZOPM2108721.