1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xb809fd1698843c3b514bd2ddeeb16e72a9a585b9d83ea8fd0a7229056a1d6c82. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b82c2090-c729-4090-bb63-98418fc81da5.json and https://artists.proofprofile.net/proofs/artist/b82c2090-c729-4090-bb63-98418fc81da5.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 → block OTSBitcoinBlock must exist at that height 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 0x8976d54d061acf10bf8a569185ae229fac233c906582b2aae3aa67d2445febf5. 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/QMDA61850894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdc93a1a8a82fa4ab3ebc381e18044534c5f56833d1860e48d667ce9193e65c. 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/QMDA61850897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddb598582ece2d501682dd1ff192fa663a6f2d650c2e6fbfe5d2a30c2389fcc. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMDA61850899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb604c030f3e1cc3fc43aa9335007842cf4a62d6c4f9bf9c5b75b2a27b1ce022c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMDA61850901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc553bc06d982fa82409253ec09f4169ff0aaf608ace9e12c80c119e298db4e. 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/QMDA61850905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3dd00e9cba70b108cb4aa21a9f930e781ff991ab6f21fb60aa9d34103a75ec. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMDA61850906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a3255e513eebc9aa519c8b13ef91991a5f7d5402f285a6f03d3aa986419cf0. 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/QMDA61850909.
Medley: Danza do Rosal / Pasodoble de Seivane
Hiru Piztiak Piztiak / Bernard Xirolarru Egilea / Anbar Eta Beltza
Lau Mazurka Arratsalde Lasaia / Lastaolako Haroztegia / Adarra / Bi Hanka Ezker
Zar Dantza/Abiatzen Banaiz Kantatzen/Gizona, Non Duk Zuhurtzia?
Hortz Zorrotzak Dituen Ardikumea/Txakur Berdea