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 0xf5b604ee9a19b31ac6eefeda28bf77ae1d4f18a2413388e05fadd28f37c9ac60. 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/43c6d239-2946-44d6-8b9f-e1ed84315980.json and https://artists.proofprofile.net/proofs/artist/43c6d239-2946-44d6-8b9f-e1ed84315980.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 0x36fbef8d3d547ffa9f80f6c7d73863e4d3d89b07d86c7ab6d3c90ce441c2294e. 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/TCAFP2113506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538575c9680b22011ab4b1366c2d63a603e2b9fac873106d100f29d794e5b8ac. 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/TCAFP2113520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3e43c0f9cba62c96b114e749c376b774de2d9d2d7aad516b24853ced6f9fb6. 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/TCAFP2113526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37e3094650c3c599d11e8d26426941dd463c9fab82ec7b42a32fa58b191520e. 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/TCAFP2113531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981e09a79fa0cfce9e6ef25488e99eb392970c09628e635078fde0cd6835a1f8. 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/TCAFP2113536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e803e428a2dd6faaddeceab053f85d0dfac169156734e808cf3c8e1d89d523. 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/TCAFP2113538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3959d4054ac826b98426e4ee1cc3a4ffd0b922ee59909e071aaa859857662a10. 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/TCAFP2113544.
Tonto Mi Corazón Y El Gavilán Colorado (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5add267a1fe2aca261b20d4d41520f63ba4e25a80beca4f5db53edd178f9c1. 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/TCAHU2409968.
Rey De Mil Coronas Y Hermosísimo Lucero (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0ddba14e940c666f83848ed816b6d68ba3da319977ed7ae60b5597f88012c1. 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/TCAGG2218553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974d0348ed1daf80f9aa6510b8b32ccf580b1fbbf4509f4b073df75a2535c6b0. 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/TCAGG2218552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde53b53d0490e294c45a263c04146430d3d61ddac78d41e7a63f85a1d48e4132. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAGC2286602.
Popurrí Arriba Guerrero Cochos (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e860e24798b090e3b6ae53b95430f59d1bc873150a4327fba2aa685460884c. 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/TCAGB2299149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289540c017ff6b3133da4992930ae2e404378a28681a6627290d6eb5bd9f9114. 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/TCAFX2135951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5669000d7f2627ae524504f4591c16173b9ee9ae83b1cd06776f7fc53cfceb. 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/TCAFS2143923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc05384f63f2c641a332d42e1d7f24d51cb59d0fb5f271746b72f49792cc707a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFR2176416.
Popurri De Sones Barbaro .. Son Del Toro / Huitzuqueño / Los Colorados / Las Guacayas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b25a5f0ec9b79b219d022759664608d3cd6963a7dea5a0f68c984f84b00dff. 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/TCAFP2168007.
Homenaje a Un Barbaro ... Son Del Muerto / Juan Colorado / Toro De Once / Arriba Pichataro /Son De Los Chinelos /Flor De Piña
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d30b555646f8f2bcaacc797ae217a3fdc98d6d02b252c4256ad377e25cb6c1. 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/TCAFP2168025.
Popurri Michoacano ... El Son Del Pálomino / El Son Del Gallito / El Zapatazo / Cara De Pingo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3854c87411e36be0e28d12704539a2208d37eb01ee61dc98bed36ac6a0de057. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAFP2168042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c1de902b606eb4beac11a556254c05b6e607a9e19626f7da24b859a716180b. 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/TCAFQ2110891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8de2023e3d567e70416b52b8274b65ac926f325faece8d9347d2fa63bf06d6. 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/TCAIM2491266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37659a961ec06632b9317985b44941333e77572f20f7088ce1389227a79a54c3. 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/QZDQH1910654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1f22f89b5b25077ffd85b1e421e257eb64a9f8bef523b224518ac59ac7b2a1. 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/USL4R2166100.