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 0xf1540ef0e18ee6ac7f49ffaadc99147679b0bcd97b416b2d5fd51fb439928da7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/257392a2-ecde-41fc-bba4-0c4d52b6b436.json and https://artists.proofprofile.net/proofs/artist/257392a2-ecde-41fc-bba4-0c4d52b6b436.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 0x35eaeb5baed4d86d2f869cf400bb20218b02cb882c1127cce558f7cb8f1930f1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/FRX201606026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5f277d6cf8cca794c964a1c1e7236907b895d0138ef626b332ca51f86dcdb0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:10:34Z), 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/FRX201605549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6044c03d7b588a9f180a8e64bca7b68ee177f6074f304ba2618fe07bcc323d01. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX201605550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc35fc04aba1fb5a63318c668cd6c430c0ebba731eff4fc57ded0e78ec83907. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:34:51Z), 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/NLB150800125.
Muwashah Mounyati 'Aza Istibari Darweesh
Min sihr ouyounak - Live Tribute to Sabah
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de2d00afe4a07fc3e90632325440efa67aef9031d7a3d65e665e14bbde2e453. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR6V81783436.
Mawwal toul el layali / Muwashah laha badru el tim
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa361678685c9b396de42c8dff57d03b36a396c50d352ba9b5cb496ce8636dc74. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NLB151600409.
Ya Helou (Arr. M. Ornstein for Voice, Bass Clarinet & Theorbo)
Pièces de viole, Book 4: No. 64, Le tourbillon
Pieces de viole, Book 2: No. 63, Les voix humaines
Ya Fayetni (Arr. M. Ornstein for Voice, Bass Clarinet & Theorbo)
Zourouni (Arr. M. Ornstein for Voice, Bass Clarinet & Theorbo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f48789ecd5c2e73e17e68289baca619793623bf5cae1003279d23d1263ff31. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/NLY431900001.
Pièces de viole, Book 2: No. 63, Les voix humaines
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ca55f7b6b94ed3e9172f929683569367b53bd68a5fdde63515c8ac40b77a5a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLB152500792.
Ya Man Itha - Tribute to Fouad Abdel Majeed
Charbel Rouhana: the Art of the Middle Eastern Oud - New Perspectives On Trad. Maqams
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f33a28009a0ce1bf8712837351398772990483e46e9f7a059d7fd207ed254f6. 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/GBCKG0702065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f6fd0c560cf0b3055e9e60507c35c6a5cc8e39b056cc8eca8bf09b7fbc991c. 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/FR6V80134849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf312ffa7de1a64afe6d22681a5c328c9ea856caa356e587c7cb26a9ecaa9301. 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/FR6V80134855.