thumb|Lympany photographed by Allan Warren, 1973 thumb|Moura Lympany surrounded by other winners at the 1938 Ysaÿe Piano Competition. thumb|Moura Lympany at the Rasiguères Festival of Music and Wine,
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 0x53405ca763b90d4037b8e218ca1bce90d0fb7920fcffaf980bb3893a0a4549cd. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf7dac37-158d-412d-8de9-5f7e8020076a.json and https://artists.proofprofile.net/proofs/artist/cf7dac37-158d-412d-8de9-5f7e8020076a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Schumann: Concerto pour piano Op. 54 - Prokofiev: Concerto pour piano No. 3, Op. 26 (Mono Version)
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 0x5728b375bdb76b3c8cb395f6006deab83e1f186eeb603e1b41ed0fb3cf0b1d7d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBAYC8800878.
Préludes Book I, L. 117: VIII. La fille aux cheveux de lin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6e5f1f61d6a4157901ebdf8cdae11346f73d0c400890b941e190b549692c9b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBAYC9004357.
Piano Sonata No. 11 in A Major, K. 331: III. Alla turca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355005669374faf43ff00f6b5d7b2269936cbe8fbc49a62347c73bdc7c34df2b. 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/GBAYC8804522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6d059e5e92d0376c88983aa37522da60af86045c2cb223d9804b53f51c15cf. 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/GBAYC8800874.
Mozart: Piano Sonata No. 11 in A Major, Op. 6 No. 2, K. 331 "Alla Turca": III. Allegretto. Turkish March
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355005669374faf43ff00f6b5d7b2269936cbe8fbc49a62347c73bdc7c34df2b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBAYC8804522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355005669374faf43ff00f6b5d7b2269936cbe8fbc49a62347c73bdc7c34df2b. 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/GBAYC8804522.
Klaviermusik 50 Meisterwerke – Klassik die man hören muss
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd36c3d28813d09b2aa0cfc6a300094e4977b70526e30c828d8ea3e685e2268. 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/GBAYC8800857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf359146a3677e5a630ff191b5b8cd7f8b79d066fee88cfe464f3db54663107ea. 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/GBAYC8801306.
Debussy: Préludes, Livre I, CD 125, L. 117: No. 8, La fille aux cheveux de lin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6e5f1f61d6a4157901ebdf8cdae11346f73d0c400890b941e190b549692c9b. 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/GBAYC9004357.
Klassik 100 Meisterwerke: Klassik die man gehört haben muss
Albéniz / Arr. Godowsky: España, Op. 165: No. 2, Tango
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa8c017b9628a56565e9232960f89a684f0ab08a75c56e89ecaea94007f46cc. 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/GBAYC8800746.
Suite Bergamasque, L 75: III. Clair de lune
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd36c3d28813d09b2aa0cfc6a300094e4977b70526e30c828d8ea3e685e2268. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBAYC8800857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4af2d39b4fb4b1c6caad9f8b1ecea46b2724f0e7dfe9326799858c29e51a030. 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/GBAYD8800169.
Herz und Mund und Tat und Leben, BWV 147, Pt. 2: X. Chorale, Jesu bleibet meine Freude (Piano Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cf8900a2b8f52b0ac0d7bc440c38e6211e998c6c0319a0ad2e687794d49758. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBAYC9000010.
Bach, JS / Arr. Hess for Piano: Herz und Mund und Tat und Leben, BWV 147: No. 10, Choral. "Jesus bleibet meine Freude"
The Most Peaceful Classical Album in the World...Ever!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cf8900a2b8f52b0ac0d7bc440c38e6211e998c6c0319a0ad2e687794d49758. 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/GBAYC9000010.
Waldszenen, Op. 82: VII. Der Vogel als Prophet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8f49d7f355d25f1b7e352236c7e52e326b89d9179b1ea00a6001b4f30a89b5. 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/GBAYC9004352.
Suite Bergamasque, L. 75: III. Clair de lune
Dvořák: 8 Humoresques, Op. 101, B. 187: No. 7 in G-Flat Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1aa43202a6ff1962e0e45f5bae3c7acbdd1e0afea4cf12daf18696791443031. 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/GBAYC8804527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e2a301b6b7f7e36e01de4dbc64fcd2d755f4a75fff18ac3458bc3b531267a2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBAYC9000954.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch