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 0x6609fa5b5b6a820fdf4b37ab859ffae10a3211d9d947d54c1bcb2697e238964e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5454ba41-c95e-46d0-a91f-200893ecb2f5.json and https://artists.proofprofile.net/proofs/artist/5454ba41-c95e-46d0-a91f-200893ecb2f5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Classical Favourites, featuring Works by Bach, Beethoven, Debussy, Chopin, Brahms, Mozart and more
Piano Music by Frédéric Chopin: 24 Preludes
Classical: Johannes Brahms Sixteen Waltzes
Classical Bangers by Beethoven, Chopin, Couperin, Hummel, Liszt & Mendelssohn
Piano Sonata No. 3 in B Minor, Op. 58: II. Scherzo
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 0xef6b6446ecbcd82b56aac077a9734373e49181d22b984a4fb0dec54279b63975. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GX8KD2338610.
Children's Classical Music by Schumann: Kinderscenen (Scenes from Childhood)
Songs Without Words on Piano by Felix Mendelssohn
Classical Music Selection feat. Works by Handel, Debussy, Byrd, Faure & More
Classical Music Collection, feat. Works by Schubert, Chopin, Dvorak & More
Waltz in Db Major, Op. 64, No. 1: Minute Waltz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d19e360bd4befb8084ac8065a4ef8e3117bd0a3badbb346ade8da6c3f99844. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GX8KD2399675.
Classical Compilation feat. Works by Purcell, Schumann, Satie, Joplin & Liszt