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 0x5dcd16f25f7f6be5f9afc7c2278a20e03705d07737cea126df80cafe00d219d5. 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/5d43b6c0-b4d1-4ec7-9b95-054c92502b96.json and https://artists.proofprofile.net/proofs/artist/5d43b6c0-b4d1-4ec7-9b95-054c92502b96.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Obrando En Grande (En Vivo Desde Monterrey N.L. México/2013)
Mi Casa Nueva Adaptación "Mi Cuenta Nueva" (En Vivo Desde Monterrey N.L. Mexico/2013)
Los Tres Tristes Tigres (Obertura) - En Vivo Desde Monterrey N.L. México/2013
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 0x4cd62b356c2eda0da3ca79e37b3912b89ebb16a6698477b8004eaed6e09548bb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXUM71300242 — a six-check JSON result.
Canción Sincera - En Vivo Desde Monterrey N.L. México/2013
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd723d7fa3a1cd1e7098528bc530233959cfd7224c2a4d154fd163f9eb2043460. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXUM71300243 — a six-check JSON result.
Cómo No Voy A Quererla (Las Suegras) - En Vivo Desde Monterrey N.L. México/2013
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b049fab0c7716a7b2c101b07380b662b62c9e79c435d6e0e690025edc1f23f8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXUM71300244 — a six-check JSON result.
En Puro Calzón (A Puro Dolor) - En Vivo Desde Monterrey N.L. México/2013
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2163a723afcda8c6a0339194ed646a72e68ec0ee2635d415350a21f1da0c698a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXUM71300245 — a six-check JSON result.
Paloma Rosa Aka El Águila Blanca - En Vivo Desde Monterrey N.L. México/2013
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4dd13531eb936a4b41001f3ba38135ba5ef5493d86859d8e0dca3ab092ebc09. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXUM71300246 — a six-check JSON result.
Tango Cruel - En Vivo Desde Monterrey N.L. México/2013
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2567d6a474a9ad68a2716b1049bdbd59bd7b1d265a3e7803023293d28f32a87. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXUM71300247 — a six-check JSON result.
Que Horrible Es Beber - En Vivo Desde Monterrey N.L. México/2013
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537533f55e91305ff5696266308f22dd255e3869c243a8145efb9e01b87a0df4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXUM71300248 — a six-check JSON result.
Amor De Ver-Ano - En Vivo Desde Monterrey N.L. México/2013
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69121de2669eb58e249eddaf23143cc2cb790df46e18bf9babd58bc9a695f49e. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXUM71300249 — a six-check JSON result.
Canción Ligeramente Fresa - En Vivo Desde Monterrey N.L. México/2013
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb151f60bef3b87dbeb719f8248a06ba1ee93d354bd2b2734880c2ccae2accee. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXUM71300251 — a six-check JSON result.
Canción De Albures - En Vivo Desde Monterrey N.L. México/2013
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923f7be04c42fea4a58a2621836308eb4e638cfda1da820a8295be2b42ccdcfe. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXUM71300252 — a six-check JSON result.
Las Tres Tristes Tumbas - En Vivo Desde Monterrey N.L. México/2013
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2258fbc2101e1dfcba9cea2e13657fb2059ec9509da3bb3820b3d9ecb0427d9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXUM71300253 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd5d87802980936ac9004d81b3c2735c49c4b0f2a65e88999050b626f8487de. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJW2194032 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeec5ac4b7cf81432478067a8762d738ee0bd8d100ec789b700f96ed3b63dc22. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJW2279389 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd767b6616a60994d834640c19b428c6ed29f23eebed1714d787a499623dcaaac. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2518931 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf4354df90c80bb03b50df97e4e5692b46ecff0b00d69557b8ec8ab76413898. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2518932 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00d3f1d5fd0c960c04e7d9042560ab7db7f79472fcc8263bc9754ded58863cb. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2587652 — a six-check JSON result.