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 0xe317ab38c6ec27e2eb816f8062b7c60282d62d0d9b74d289656971717e79aea0. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e5a8ab9a-251c-43b1-9f4e-9a365bf1dbb0.json and https://artists.proofprofile.net/proofs/artist/e5a8ab9a-251c-43b1-9f4e-9a365bf1dbb0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Across the Millenniums - Muzyka z przyłomu tysiącleci
Barocode I for violin, viola and string orchestra
Accello Tanguero for accordion, cello, percussion and string orchestra
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 0x0fc4d92be57659949f360f0f9494482ebcaa5973462e57f6d551ac109e0cccfb. 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/PL2DY2302576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a7024a8b2c250933065a8011f6f8263f4c8b2138a585fb0ad2f9901b93685c. 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/PL2DY2302580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ba28fc9c3d4a5881130ce34b370fbd507fa4d243cdc58e7111679fb7068156. 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/PL2DY2302586.
Dedications, Works for Cello and Piano, Vol. 3
Springtime in Paris: French Café & Gypsy Jazz Bistro Favorites from France