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 0x8a2fdc018a8d51fc318b262179073d73d80eb8cf3e8c8bb99f1e6787166fcaf0. 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/13fb670b-7a3b-4d0a-a6d8-c6b52881f9d0.json and https://artists.proofprofile.net/proofs/artist/13fb670b-7a3b-4d0a-a6d8-c6b52881f9d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mi Viaje: De Nuevo León To The New York Island
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 0x8b761703364b9c8aa3ad2e726176fd05ec20471be94c5315639e4f8e30730746. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T01:02:35Z), 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/USFF21502107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b18e861d9c8386fdb3ac525b0c517cf2472f0e1dc292a38f6399bd92f45e296. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMEU31816042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1402a3f06ff9ec6841e50efa0d36785e2b19051939a1775b9dbb9e47c8bbed8f. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QMEU31816045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77795e5d05b054bfa476f19adddaf954e881e1b01993f148417dd47901c8729b. 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/QMEU31816046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f520209854144a04052c655b6112d9b862faa733db84a5986ff93dbf325f5a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:58:45Z), 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/QZQBH2100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf45fa15bf465fbc4b25475f57b30c7281cd09bfd924ff3ea5228a76e9953c34. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZQBH2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1e1ce0eb702c567f95842346f57951ba5313e67cab79bd23db1321d710f00f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US6QR2300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bfbfa77fa72703d105dc72cc9478f489ff7b233ecdc08bb41eeb40678781fb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZLM62000010.
Let All The Children Boogie: A Tribute to David Bowie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9c42bdcbb7a403dddd4fdf6f226a82af56b85e929883fd9ce073c58a235bea. 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/USGR91600403.