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 0x145b2af32553415687d78a24623948835b05aafdd198ac9d851ed808eb6aa9df. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c0cdcc17-1cc6-4401-ad05-94fd910d98d8.json and https://artists.proofprofile.net/proofs/artist/c0cdcc17-1cc6-4401-ad05-94fd910d98d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
18 Miniatures for Violin & Piano: No. 3, Cantabile, rubato
Kancheli: A Little Daneliade, Valse Boston, 18 Miniatures & Largo & Allegro
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 0x708164cdcf6b90d1e9cf2da67bca6b94f6c4adc803d602939c3cf7b4fbb7b4b9. 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/DEB262300204.
18 Miniatures for Violin & Piano: No. 7, Cantabile grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa64ca33aeb69f50371bf634aa02b55dba20516f53abf034e71326974a82bfd2. 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/DEB262300205.
18 Miniatures for Violin & Piano: No. 8, Dolce
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798e72d0afa807ded67c87e17161798b60633ccc203a2937f6035f7961c91697. 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/DEB262300206.
18 Miniatures for Violin & Piano: No. 12, Quasi recitando
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a558e5d2272e55b4d5b8051bf4a05e16bb9c0bd17e0e133edd3eaa6dbe9e4c. 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/DEB262300209.
18 Miniatures for Violin & Piano: No. 18, Dolce
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4c67d35bc3b41c4bffe20e9048de4e55ba05f7814ba3e706eaf531dbc96159. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEB262300211.