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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a3cb7deabeab4f801b7ee235833adda01d00ed8989d75f654fed0cdca8ebb2. 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/60c47dd8-2136-48ce-a514-f82dd23f659d.json and https://artists.proofprofile.net/proofs/artist/60c47dd8-2136-48ce-a514-f82dd23f659d.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9a51f15c953df7515838a4cba070f153f1a9a48d580e8d088ac2a981d85bb5. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/MXF147900200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab3ad787326bfc5b208b81f551728a6a4592662b1c066f64324927b27792983. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/MXF147900201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998e6151aea9f8c352b23b9863584d20cc8782ade3ed06ec273691e6b3d219bd. 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/MXF147900205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0d43a0c724c9b7e29bda5607c9d24242d8a1d55ce5bf074c23c60aefc12d11. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:12:38Z), 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/MXF017200138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7d698b958cc5d67b91572fb1db65b3c68eff447716ef52635c9b1d3a0e93cd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/MXF017300155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957600c63e0e603d3addbadc46f4cd9dad953b41a0f7dc8c89ffe0a836bc983c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/MXF017300408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973376ffebf3df76474a1417455eff490c21485947f8f60d1a0821e4693b51c2. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/MXF017300157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d5768d09cc2ac80c5475dd98a85c9656d4ee0d2f98d47f63effd4ddb111471. 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/MXF017300410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2a4ce6cdee1d60676a6696d95d8d2417bb44b3eda69bdb61640a506f32fd16. 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/MXF148000167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a280bf0807cbc24912f5faa40eba9af02780ed5585654ea3569f2da70f410c. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:27:36Z), 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/MXF148000169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17bbb363a865c488d8d1da0bafb57459e0473aa0596c09883e1ec9f97d4f55c. 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/MXF148000171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe483d15c867faa9b255b48b722f7fafa30d941ca3667ed2440e668613a49975c. 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/MXF148000174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf03332142fc1af5e42b075cf5b5e0928bc4294f30c8e49bb0d25523ecb3a00e. 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/QM7282068762.
Tesoros de Colección - Los Mejores Duetos Rancheros de la Historia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe077956e4db30f1acfbd5fffb692625bebc4c2e2a6a1cd535860c1f0b0ab95eb. 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/MXF017900179.