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 0xd40ad4730b298f4784b0a753f4c308f738727d1f86bf222d777bf72b8f3977ed. 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/d98ae28a-daa1-4e0e-acee-13cc7306e1dd.json and https://artists.proofprofile.net/proofs/artist/d98ae28a-daa1-4e0e-acee-13cc7306e1dd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gilles Peterson presents Havana Cultura: Remixed
Gilles Peterson Presents Havana Cultura: The Search Continues
Agita Remixes (feat. El Micha & Osdalgia)
Orisa Remixes (feat. Dreiser & Sexto Sentido)
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 0x6a73c892c0a00e94738a38c11afb03cb04348717ac621be07c603941259bf377. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBMEF1200487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e5fc14b20811fcdd0c504eda0008cb7065f7336cac04d497e1355efeb00051. 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/GBMEF1200491.
La Rumba Experimental - Single (Motor City Drum Ensemble Remix)
Havana Cool Out - Single (Reginald Omas Mamode IV Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05ded8cb05bf81b6c62b4ebb19201ebf82760e10f71a951ef6484434f5217ab. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GBMEF1500873.
Gilles Peterson Presents: Havana Cultura (New Cuba Sound)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022f03f90806aebfa6e0c8ccfdb76875b26bc5b249c25692ce0101fb53a96e78. 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/GBMEF0900149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30aef3f3575e325bb89353ec8519bfc1eb154e622965f798cad2579cade573cc. 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/GBMEF0900150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ed8b886d3fae75bbc54b5fe5d36a376b338a95e68c786932f51ca4add9470d. 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/GBMEF0900151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51eb99fc80876faa9985de1e3b7e9422a45be77cd9c17fbfdda7d463fa9eea1. 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/GBMEF0900152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e4d14f87e648f2af39f28bf70b0094db6b5435f8cc8bf293bdcc6524b1d497. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBMEF0900153.
La Revolución del Cuerpo, Pt.1 - Skinner's Owiny Sigoma Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe879a4c5fc357be5615b5e0d09323ff684dd1e8c36b2535af0ac0eec9975bea0. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMEF0900154.
Lagrimas de Soledad (No Existen Palabras)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edce22a559877793221714a124682ddfd9a1733c450b617e1bcf37f18068ad9. 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/GBMEF0900155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780622b683404445579500c695208c6fd4c6490ca9f254e251f29351ebe7361e. 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/GBMEF0900156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf118cf08ca5934f0d67178e59baf5541a347f0614ca29f88a6f909baf94e16c. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/GBMEF0900157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb925992f3e39c12729a1be0d862923d4358ae013a53497365c3adccbf717fa3. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBMEF0900158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70300ac4454c207150639be360e8f805edc9dfe896b568e5a6f12a300cbc8f99. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GBMEF0900159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b9868f88ab4b622ac38d9a2391a1a7b8fc1e62fcba90a6d24a0194e775ab64. 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/GBMEF0900160.
Arroz Con Pollo - Solal "Soy Cuba" Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dda294ad32ee7f5b806562aee386424071396d60a5d380ed9c07dde86ce1cfe. 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/GBMEF1000222.