1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xd2359ad8eab9ba0552a7efba6b2939372d0b79e1e3116dec3a1345232e372232. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72ebcb90-5c89-4c23-8f2e-42812cf16fb3.json and https://artists.proofprofile.net/proofs/artist/72ebcb90-5c89-4c23-8f2e-42812cf16fb3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fairy Tales: Poems and Music for Children
Cinderella, Op. 87, Act II: Grand Waltz (arr. M. Fichtenholz)
Cinderella Suite No. 1, Op. 107: Mazurka (arr. M. Fichtenholz for violin and piano)
Danse macabre in G Minor, Op. 40 (arr. for violin and piano)
Lyric Pieces, Book 10, Op. 71: No. 3. Puck
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 → block OTSBitcoinBlock must exist at that height 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 0x1e36eb94dfec60bb12a60c207f5e823a954bbfbf7e458198645a8af0b7270f63. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBYDS1300031.
Waltz No. 6 in D-Flat Major, Op. 64, No. 1, "Minute"
5 Pieces for 2 Violins and Piano: No. 4. Waltz
5 Pieces for 2 Violins and Piano: No. 2. Gavotte
Carnival of the Animals: XIII. The Swan (arr. for violin and piano)
Circus Polka (arr. S. Dushkin for violin and piano)
Children's Corner: I. Doctor Gradus ad Parnassum
Children's Corner: VI. Golliwogg's Cake-Walk
Nocturne No. 2 in E-Flat Major, Op. 9, No. 2
Cinderella, Op. 87, Act II: Grand Waltz (Arr. M. Fichtenholz)
Cinderella Suite No. 1, Op. 107: Mazurka (Arr. M. Fichtenholz for violin and piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5e8f0071ace8ee3cfb6e5c9883e908c396569ec2beba33beacc89da6f40e45. 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/GBYDS1300028.
Danse macabre in G Minor, Op. 40 (Arr. For violin and piano)
Lyric Pieces, Book 10, Op. 71: No. 3, Puck
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e36eb94dfec60bb12a60c207f5e823a954bbfbf7e458198645a8af0b7270f63. 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/GBYDS1300031.
Waltzes, Op. 64: Waltz No. 6 in D-Flat Major, Op. 64, No. 1, "Minute"
5 Pieces for 2 Violins and Piano: No. 4, Waltz (Arr. L. Atovmyan for 2 violins and piano from Shostakovich's film scores)
5 Pieces for 2 Violins and Piano: No. 2, Gavotte (Arr. L. Atovmyan for 2 violins and piano from Shostakovich's film scores)
Carnival of the Animals: XIII. The Swan (Arr. For violin and piano)
Circus Polka (Arr. S. Dushkin for violin and piano)
Children's Corner, L. 113: Children's Corner: I. Doctor Gradus ad Parnassum
Children's Corner, L. 113: Children's Corner: VI. Golliwogg's Cake-Walk
Nocturnes, Op. 9: Nocturne No. 2 in E-Flat Major, Op. 9, No. 2