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 0x24768711f3401f1ed9672c8f13eff257f81dcc3088d1ffd5140dd511612ed04b. 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/2a4fb086-a2a1-4c7d-85fb-657590739583.json and https://artists.proofprofile.net/proofs/artist/2a4fb086-a2a1-4c7d-85fb-657590739583.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 0x5b349ce4cd5ad345d00dd96f70ebaf21ae0769650685572ff657b8b86c8a65f6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:09:17Z), 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/USJE62307116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405b05fcfeddf5986efe33033f3bb4e7fa615a79c568b4139259facf25c8547b. 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/USJE62307118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b64630ab1ea6323401b1d39779bbfaa9a804500ccdf2e8919b7b8af73f12e70. 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/USJE62307120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d4c3cb86cb7047ff11b328f6a0f2957e08cea38b25982c8da5475704310a3b. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/USJE62307121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2029ee3b855896467ea92975e52240b26c819c02303ffffe4b69754bdd2ada9c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:01:42Z), 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/USJE62307146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f74bb83598817f5bbbe696ffcb61e6b78b094a82028685cc7ec94d55fbf8ad0. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/USJE62307125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85edd44198d4680a362be2dd2091cc8495b3998eb887efafea81cda678d29d93. 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/USJE62307128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d3f0ad455377c5dfc857916e6d138e7bfdb05df55a83ff8b139afc55a513a9. 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/USJE62307129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f3a4a7da97f2041525ad97a7c448d1773393689b4c2a404cecd619e5179935. 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/USJE62307130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef943c46bcd324be3d0212027d25e5de7067a406cc1e0830ff393df7573cc3b6. 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/US7VG1925525.
Los Exitos de Tiberio y Sus Gatos Negros
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bab409d9fec8fdd9736d19fd3462c991abf0d915342033b7b8bdb3fa783314. 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/QM7281570368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef93f719632ec84453fbfb022d63da7d1b87e85f5e6e1dc8d51ae4b046e7fe55. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:36:13Z), 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/QM7281570372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae41e2ffc9e4b85297f0b2a9947b53cfa42c086991215808a607c65c4f320e0. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:33:39Z), 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/QM7281570373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53804c456e6e253fe0136fd040bbdb521c5bd63e95dcf674a8d2587428bed6ae. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM7281570374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29afb26c8679b144bdceb6eb972b9645c62abb966b13b79fadc97fa3224d3cf3. 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/QM7281570375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f827fd71a98532f45e0f52c366d6a29e9844884f481470fb2e4e2644944b5bf. 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/QM7281570335.
Tiberio y Sus Gatos Negros, Vol. 1 (Leyendas de la Música Popular)
Tiberio y Sus Gatos Negros, Vol. 2 (Leyendas de la Música Popular)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549a09cbe16fde7bc86a70a8f4e6d61321577f7927f03586e4ad567730bdd71d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US7VG1923087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f530c1be2bc7cb0e8e1ec505b46dd82fc03ee81861c10ce977909537a1f2fe4. 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/QZGLM1917950.