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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc977c32b0c8190722920b6c6a545ac276ec7308c794cc6b87b02e3b7f024a2. 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/48084f68-551b-4ad9-aaf2-1b00ec316069.json and https://artists.proofprofile.net/proofs/artist/48084f68-551b-4ad9-aaf2-1b00ec316069.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Happy Holidays: Christmas with Tchaikovsky
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65efefb1e943717a98bd717d72e1d80a2d5152ba805558fcc27a1607bac98c7b. 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/FR0W61328613.
Best Mixtape Ever: Relaxing Music for Pregnancy
Swan Lake, Op. 20, Act I: Introduction: Moderato assai — Allegro non troppo — Tempo I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db0a14053ac2d9605ee0f02bf4a46c685c757cd9360ba0f8e1464c981252f0e. 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/DEBL61004675.
Requiem Mass in D Minor, K. 626: VII. Lacrimosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db62b2446856161bdec3c8f72dbf3e7fa3af6dd14602cc97f48fbdb41aaeb95. 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/DEBL61004926.
Giya Kancheli: Symphonies No. 6 & No. 7 „Epilogue“
Tchaikovsky: Symphony No. 5 - Marche Slave
Stravinsky: The Firebird - Debussy: Nocturnes
Ravel: Boléro - La Valse - Pavane - Rapsodie Espagnole
Debussy: La Mer - Prélude A L’Apres-Midi D’un Faune
Giya Kancheli - Light Sorrows & Mourned by the Wind
Giya Kancheli - Symphonies No. 3, No. 4 & No. 5
Kakhidze: Christmas Trilogy & Moon Dances
Berlioz: Symphonie fantastique - Rimsky-Korsakov: Spanish Capriccio
Tchaikovsky: Symphony No. 5 & Marche slave
Adagio for Strings (arr. from Quartet for Strings, Op. 11)
Classical Choice: Famous Overtures and Adagios
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73d08dc4343b2db8648ffb4a11a15d6c6193c536b7ad6e43bd7336ef8c63dfe. 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/DEKB72072241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ea59f49a30b1e103565a1fc4e6056ea4e176d45408172105098b0c7b599d46. 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/DEKB72072249.
Swan Lake, Op. 20, Act II: 14. Scène. Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04f6d8b95d7c9e4a74035aaed88d5baae90099573ee116b2ce359cf23cf4d0c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEKB72413626.