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 0xefe9bdefcad603acc8b7003a361bb32ca712a2d068c79041a5651146b3dadfda. 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/d188f374-54b0-4e62-af01-ae17ecb7fd98.json and https://artists.proofprofile.net/proofs/artist/d188f374-54b0-4e62-af01-ae17ecb7fd98.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 → 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 0x5290457b7126a33d7a0e2b054c416f6ceb45c6c41d1783625baca44f5f1bbf99. 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/JPF690925002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329e26197c06ad694bfc1ac4f3ff6c317d0d468663e8178afb8d6d2a56f223cb. 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/JPF690925003.
カール＝アンドレアス・コリー（ピアノ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a7cda7c5df1498d8b397be594ab071bbce0ff0defa61b169806f5e111a735e. 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/JPF691000451.
Schubert: Variationen über "Trockne Blumen"
Schubert; Arpeggione Sonata/Shostakovich; Viola Sonata
Brahms : Symphony No. 1 in C Minor, Op. 72
R. Strauss : Sonata for Cello and Piano Op. 6
J.S. Bach: Unaccompanied Cello Suite No.5 in C Minor, BWV 1001 & F. Schubert: Arpeggione Sonata,D 821
5 Miniatures ~The Art of Clarinete Ensemble Vol. I~