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 0x622c75b1d5c65904f9af67c56e3b97a7978d1aa8f5efb2f502e46e080bdfe44d. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2a470f1-3850-4a92-ad92-29e09e59dcba.json and https://artists.proofprofile.net/proofs/artist/e2a470f1-3850-4a92-ad92-29e09e59dcba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bolero Jazz: Detalles - Tributo a Roberto Carlos
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 0xbc22fb6743c80c2fe9e9688a8c8c73846928516c2b8b9982c19fd11b95725545. 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/USZZR0910031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3c5fd281bdb2e95b65a383b10e62933e8a7ff7ce64f7028b8182312d5b339c. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/QM4TX1753770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816729c74cc6027c7ffabc8e3c343f0274d5c3a7dc8d20fd280cd3eadf95b5ae. 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/USZZR0912646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abc6b7332387a795a20748675672a1ee9c3a22ca1fcc2aeb070242aa75d74d6. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ES7511026401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf2c1c04c14a1097a2c44037a6f0f81fe34a160fd8f3e317bc050e890e4de07. 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/ES7511026402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15964aa69c8e3241803730f9843bdbe424e6474e96e737972741a5cd1a243829. 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/ES7511026403.
Hermosa Habana / Hoy la Habana se Acuerda de Ti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309d7cc71c15cc166505b5f192e4a9c407d1d598a0848cb0efc1e7b62495b4f2. 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/ES7511026404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22398cbbc6e7caeab7d08d83a8d0a12733e414afa86f492468ea18bc2e05094d. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/ES7511026405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9596f14278743e62722cbab65c4a02c69f3d8ed01e064729d84d4de6955c28e. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/ES7511026406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86f03b619745b7be00a5ff28c558544cd73d70dc8ab2f5c536d4a8f7dd46864. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ES7511026407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8a7ba144cb00325b301a80bc61d14e8da04dd05a3ce8252082fcc1a4981733. 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/ES7511026408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cc7643210efd975293bf3041609774bf1674db795d659713db9d0d8b5fd5da. 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/ES7511026409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2236b8e9e47964d410357f0c1e51710297043984c4e2cca85a66821ec406786. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ES7511026410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bd4eb041467e82fd196ffb2460fb9ab4ccd057b599403acd86d863c4df694b. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ES7511026411.