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 0x02e47163a9c61e1cc9d809b0e845146a3ab84b4f9b50ebafbc88b7047f19b0f7. 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/bb0db6fa-1150-4a71-8734-a200991d10d0.json and https://artists.proofprofile.net/proofs/artist/bb0db6fa-1150-4a71-8734-a200991d10d0.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 0x1bce3639ea1f9aaeacdf9dc0209c9e2d2408e9916de867e2079d72af9c832a9b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6N2598978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82c32cf2d5e9fb95e3be305b8559fee93e8afda3c7c2546783443780ed466f5. 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/USTCE1067998.
VanVanero Siempre Sere (Encuentro Y Partida)
Salsa 2015 - 20 Original Salsa Hits! (Salsa Romantica y para Bailar: Puertorriqueña, Cubana, Dominicana, Colombiana, Venezolana)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0a2ee9751ef6840f83820b81d5655f1c13b7788810ffcba0f52e57382872bb. 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/ITF251400149.
De Revé a Van Van: Dos Leyendas (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b1378b375eb0cb98b0c01299a8c3a9e1b00cc68a981c8ee1a33d80fd60a1ac. 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/CUA021913211.
Latino 59 presenta: Bailando (Salsa Bachata Merengue Urbano Reggaeton Dembow Fitness)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0a2ee9751ef6840f83820b81d5655f1c13b7788810ffcba0f52e57382872bb. 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/ITF251400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bb530cb0fbd72ede28b73e0304cbc3ffbb5a28d6e42b424427d0b4204f92e6. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ES5021603883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a67cd618e8af95a7e746ed9fb4be4268c536047dc0ba7863a0be7125c6e35a. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/CUA021410778.
El Chan Chan Son (feat. Pedrito Calvo y Luis "Papo" Borges)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d1a26507fc02b16abc230669c6ef6a2bb9ad8b8a3979ab646dbaa740e450b5. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/USDHM0903720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e27d8eb3f7cbd3757417f5f7a9bb26a370586d80969d43688a23814821c3611. 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/CUA021913291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb8eb704a53e3e469b7e4509c8bc2e84afff679f2c63c048c1b3a1152866509. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CUA022114976.