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 0x9dbb22e758fc30ebc38aa05b8fb462b53392b29a3aa428b6b91e3edd9762052a. 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/478b1c10-2993-4528-9192-7f2a66100a6f.json and https://artists.proofprofile.net/proofs/artist/478b1c10-2993-4528-9192-7f2a66100a6f.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 0xc7da2d9a9aa1c1171cf18f9f21221e79decd528fc5423d8eac2fb02395e60996. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/TCAJG2530973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3213d6e1f77709850d944bc9c5d971c6edef6d916b61e5767f2f6af07a6cca76. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/TCAJG2530979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7926e17ec959dc9b28dbc1395fd297ff5b009f2ff4c8727fff9483cc749013c6. Chain 2 (Bitcoin): anchored in block 957661 (2026-07-12T05:37:10Z), 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/TCAJG2530983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2692917a3aee7cfdcabd2ea04895a1c225e016b4ad9c93fd3754d6055116cd. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/TCAJG2530986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e6f2b720bd9e34d3ef1c7645e2c4a23d5b7d764124faa0398f1738e77a982f. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/TCAJG2530990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98594ed668c49913c9fd4e155a2551bb8ce1bf491a0670c8ad6d9117b8dc03e. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/TCAJG2530993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ccb82ef97cabeff5743624b46597e33e3215f236c8b10d8edfa2a84fede38a. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/TCAJG2530995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5808b5ce67d48bff45c36639eb2f2c08639e458f2f354432e04d0e37784490. 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/MX3601100011.
Me Atizo Macizo Tour - En Vivo Desde la Ciudad de México
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e57be20a2af34be8ad62cfc947874e84fa00b1e77e3642c54918895bc6f9e59. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MXF011200657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062a1a81719b367274042e2848ab9d2051c44f29473da3aae7230291582ca711. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MXF011200644.
Súbete y Ya Verás (feat. Big Man & Millonario) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4620320077a7ec744adf8ed847e1f6b42841769e051c552ae3b9482b36b277a1. 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/MXF011200645.
Ya No Van (feat. Millonario & W. Corona & Big Man) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7537a347344f6bd147a77a0bfbed9de751bc54de13bf896fe886391928442342. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MXF011200652.
El Ratón y el Queso (feat. Millonario & W. Corona & Big Man) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6dd3b5e9ed138684ed726e02ac5040fc319835034fcbe7b9bd0ea48c086371e. 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/MXF011200653.
De la Calle Soy (feat. Millonario & W. Corona, Merry Dee & Big Man) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79056b8d3ee7d925d7a0607f485d2098cb5177af1c1a7c9d4095c2332971cb30. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MXF011200656.
Doctor Marihuana - Banda Sonora de la Película: "Los Jefes"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be1df9f302df6c08270e6fa9fa46818041de36b2d951bbc11b152071600813e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MX3601600008.
Los Jefes - Banda Sonora de la Película (feat. Big Man, feat. Campa, feat. Draw, feat. Millonario, feat. Sonido Caballero) - Gift Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6417bf66adcc36548778795b1f92fcb5e9e907371a944b48ca24470747be6de2. 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/MX3601500038.