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 0x2ecaea60773280a774695d5e454572bf0f294380735b71e38e480e63da6e3d12. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac9c63c7-c36d-42fb-b8ce-1b0c6ac54f8e.json and https://artists.proofprofile.net/proofs/artist/ac9c63c7-c36d-42fb-b8ce-1b0c6ac54f8e.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 0xb5e2faf4d3c74b6127c1635d0ff4e5ae200d9065bcf8271d1a7090ec00144ed5. 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/QM6N21759171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf371209468cdccd4512767de1afd8058065a18cf4188583dca2877c6b6b0b13e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM6N21759172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f58adc7db0687fbce637d495ecfbb8758793bee4210075ad9c2ff060b00f83. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QM6N21759173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec130d0f5edb8ab7e00f79206ce0c069465950d76833fd9d3452a4f78949f61a. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QM6N21759175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c0336d1ed7a1bdc57a03fd1e80c88aef17b9a8424129cd63b7ef533cc1e019. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QM6N21759180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2967824fb27fde9c6ac5f76ed0aa5e5b26933bb414bc560674cdd0867036ff7c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM6P41857850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c64c30827953ea87f775c32564ffe922c7472f39fd5001c78a0539caceababf. 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/QM4TX1891969.
Vivo por las Mujeres - En Vivo en Pasión 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c64c30827953ea87f775c32564ffe922c7472f39fd5001c78a0539caceababf. 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/QM4TX1891969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3d1f83281dabeddc8587e29831b5764267e9cfb6d61e18f25329d80e07ca9e. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ91772211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205c00d07c6600ed6961f6ad91736fe6920d8695a57597fefe03d8254713e370. 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/US3DF1941782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5e06b4127993dcac38707e1e14999711602d8243c0940afc08634d3212aad0. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/US3DF1941818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3afa2729dd4968070ebf27b84144efeaf61279e1eb2882fa1b8df2eb45f4500. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/US3DF2122879.
Goza mi cumbia / Yo soy así / Bonita y Mentirosa / Lavate la cara / Deja el bajón / Doble Vida / Yo Me Enamoré / Yo Tomo Licor / Que Calor / Me Muero de Amor / Negra, Ron y Velas / Negra Caderona / El Campanero / Por eso Vivo (En Vivo en Buenos Aires Cumbia)
Goza mi cumbia / Yo soy así / Bonita y Mentirosa / Lavate la cara / Deja el bajón / Doble Vida / Yo Me Enamoré / Yo Tomo Licor / Que Calor / Me Muero de Amor / Negra, Ron y Velas / Negra Cade
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b64ef431dd5b3502a1fbebeeac499eff1bc2407ed741cdb8f48885f6d30d2f. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARHXW2204399.
Goza mi cumbia / Yo soy así / Bonita y Mentirosa / Lavate la cara / Deja el bajón / Doble Vida / Yo Me Enamoré / Yo Tomo Licor / Que Calor / Me Muero de Amor / Negra, Ron y Velas / Negra Caderona /El Campanero/Por eso Vivo (En Vivo en Buenos Aires Cumbia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505bb0f0054a63b77f06c3e3d224217a9bf63bb99d6f9e7480d203d923e9a38d. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARHXW2300244.
Exitos 100% Escuchados, Enganchado: Por eso vivo / Goza mi cumbia / La cerveza / El bajón
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c88a21126e83e2b6b9ba382d4b8615cad00831c87b13ae74a3787fe31fb8a0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ARHXW2400292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404f4e7364bc95cd02bf98134ea6f2781dc7b939b8086d5dcedac2c27c3e86dc. 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/ARHXW2401287.