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 0x0920fceb34238aabd3ae864e8a6c24df4e8d90c6d242223e8f103fac764328f6. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a778b9f-53bf-4e1c-9600-5173d0ec7554.json and https://artists.proofprofile.net/proofs/artist/2a778b9f-53bf-4e1c-9600-5173d0ec7554.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gustav Mahler: Symphony No. 4 in G Major
Korngold: Schauspiel Overture, Märchenbilder, Der Schneemann & Violanta
Villa-Lobos: Bachianas brasileiras Nos. 1 & 5 etc.
Pierre et le loup, Op. 67: theme de Pierre
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 0xb2fd5a9b14d8d1e6ffb5cba26118b3594d7778402e5e46fd7278f1bf6b4a25bf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAYC0802430.
Fratres (Version for Violin, Strings & Percussion)
I Fiamminghi (The Orchestra of Flanders)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f1b2ea669f7919fe1e1a880cdcf533ac9cb4ce364ad7a7702805bd6f06884e. 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/USTE10302387.
Elgar: Serenade for Strings, Op. 20: II. Larghetto
The Most Peaceful Classical Album in the World...Ever!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea076798d8357cf4d3198d262f10de808e06c74cf7db87725a5553a299d33e1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBAYD8300064.
Elgar: Variations on an Original Theme, Op. 36 "Enigma": Variation IX. Nimrod
The Best Classical Album in the World...Ever!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3cead3f3cfc1ba3d4a9129005ba43ab818e0bf4043c7ba319b8de663e52228. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBAYD8300055.