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 0x6c120dabe2c1d60108474b905405d58ab19ae6568e9051cba83cb8f55704110d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e017ca6e-b67b-4215-9d32-0f50ba24e8be.json and https://artists.proofprofile.net/proofs/artist/e017ca6e-b67b-4215-9d32-0f50ba24e8be.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 0x7d1fc815aabbb5f3f7338140e9b4caf4ead27c7a11823614dd043cf7278f4af1. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:30:56Z), 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/SE5ZV2228201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45a75fcaa0f1361974e83d80305fcd2963181902518e00483e18c5ce9e2b160. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SE5ZV2257203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e7506526a4edfdbb4343b2c70a377155842fdc38d53d2d747ee0127ff1d5e3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:41:48Z), 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/SE5ZV2212701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e01ae41aa767d0a5ab299da458996529144736b08b4c8f9fe53abc93183007f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SE5ZV2257205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb8e0cad31559f8a2371fdce4f45d6dcf0555f66a77fc391cbada03004f4028. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/SE5ZV2211001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8605cd3045d7926756c276194b83fe62a3a6c359724ca1bef51e29e2a5bf6404. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:06:23Z), 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/SE5ZV2241501.
Kinderszenen, Op. 15: No. 7 in F Major, Träumerei
Silhouettes, Op. 8: No. 11, Allegro moderato in A-Major
Chopin: 24 Preludes, Op. 28: No. 15 in D-Flat Major "Raindrop Prelude"
Mozart: Piano Sonata No. 12 in F Major, K. 332 II. Adagio
Chopin: 12 Etudes, Op. 10: No. 3 in E Major "Tristesse"
Mozart: 12 Variations on "Ah, vous dirai-je Maman", K. 265: Tema "Twinkle, Twinkle, Little Star"
Beethoven: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight Sonata": I. Adagio sostenuto
Handel: Serse, HWV 40: Ombra mai fu (Arr. Pavard for Piano)