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 0x523cfcde9422ec336848bd271859a707f11a40c08d5228c82d5dfacf8f170569. 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/388998c5-f43f-47e0-a8b5-62bdc63067cf.json and https://artists.proofprofile.net/proofs/artist/388998c5-f43f-47e0-a8b5-62bdc63067cf.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 0x3130df60f90375b08d81f241887fb761bae3dcf0cbeca25616e8094b11fd6007. 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/QZGLM2045040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bd673ad0ef28000510d23e24ff1a607ad066bf39a535694ff0b3bfe6ee87bf. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZHZ32092866.
Caminaré / Nací para Quererte / No Es Mía Tu Piel / Vuelve
Soy Lo Prohibido / Yo Lo Comprendo / Miénteme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a976f3c815c463ee0f4d84955b504b54cdd5011865a5ea3741f7e56478a9724. 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/US7VG2155776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465fa573fb7f61df33756f27966e709ee7136ee58002fa2c1a2ea6a24241abd4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG2155777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8f580da22e2da3d48d4aa7ab8fe50da4338b399ec14048e808d628273c9d27. 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/US7VG2155779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ae2ab81a0d6b038f8fa6397741c9785c2cd712e6cdcd6064da261486b445c4. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG2155780.
Jefe de Jefes / La Camioneta Gris / Mi Fantasía
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1dfe337f13e293ca38178666a185675c0ec80e77d8f723850d333a310e7fe3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNJX2166118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87fb6f8e050cbd272a03d88ac1afa3c29f2f1e5e9ebf95e6d4c176bb2b68a11. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2166167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6599b47dacf662bb959438866886a8189bff1d3fa6ba2d38c6e8854366bf54d3. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZTPX2191815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52df0c38da9e88cbe5dad14beb3b2c36e03d1df7c3bc9d7c983cab39be4c2d5. 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/QZNJX2296048.
Más Que Tu Amigo/Za Za Za/Como Quieres Que Te Quiera
Suerte He Tenido/El Palomito/Casas de Madera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616143c224bd5c3d47c05760ae974c14061802a11f49e58d403dbb7ac10ad883. 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/QZHZ51965668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafd1a0ec8c0f00e7239d25bdade1303e90898728936483af8b97e550b917df2. 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/MXUM71501792.