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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283734d3872580672ec7e2989db2f3351fb1ae70f1f1224b06415052759dc7fb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68c93c4d-4375-40b8-91ae-910d4368f3ac.json and https://artists.proofprofile.net/proofs/artist/68c93c4d-4375-40b8-91ae-910d4368f3ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sabras Que Te Quiero (feat. Los Peregrinos) [Mono Version]
Vintage World No. 87 - EP: Diablito Lucifer
El Disco de Oro en Homenaje a los 50 Años de Canto
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059a1238af0410eff6de3cb186883980918e0d4f5f8fa184302becb8507a12e7. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/CLBB25600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd367a1d12f896202d4c1f12a010f1639a239bf0ded9d4ece99ee4cd366255e22. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:27:03Z), 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/CLBB25600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1e64af43d0695eefd171fe161e75ebd6d1bd9c8707de316aac925ce9948443. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/MXF365804784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7689dccd2977031782a51061a1c85dbb7e36296e9153dc387e6b3c7e80cac68. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/MXF366006472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6b547b3afb2abdd87c5c380542c688cdec94b166b0deb2f52f01a4c75e9663. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/MXF366006441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a83ec55bcbb441014700dd7427bd67b56cdaae7818814f45a1b372d22c014f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QMBZ91318336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f6d571b091e3009cfac569c7e0540758045470851c1cd101fcdda16b871aaf. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QMBZ91318343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac6d09a691ce7b814ae7e42c7ad3e5e2157fafe9b45f5781c2e249cbaa981c8. 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/QMBZ91318345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2164d7a30cff8b237797fcde8c1c71e3f5b24438c769317270896287d968b00c. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USJE61703014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e08ef3910b893dac9e1fb73367f6f0c0399d973c795f641eb343d32a14bff6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USJE61703017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3546e81f5ed06e546fd1ac4d773a44bf5c3521ef32af814884c8854469a1009a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA561398766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8041df95e4c4e441df1951572d6b0d0bd9f252f376caaff957ec214a95ba0d3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CA5KR1809037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e755c8d8b6045cb1ad725647e1f260cff093c424f21073a467b93fd4ce09f17. 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/CA5KR1809043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7963300ceb837f47f05ec46a755fbc8864c0e93f99ccb18677981c71b7ef96ed. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/QM6N21480358.
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 0x0b0dbd32b93f69129d9476cec8309e3f12227e6321c1610b709a0b08d3f0f869. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USA561398767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694a5e09dec46186e3c162b309304f1d0135aa7373a1482c5d286f1d76968cff. 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/CA5KR1809025.