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 0x359c020ea1a77da2c896d649b8761b61f1ba18e90c64fdce3618af1feb4ae604. Chain 2 (Bitcoin): anchored in block 953599 (2026-06-14T06:43:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0dd70640-00b5-4e0c-96ca-d871e96f92c1.json and https://artists.proofprofile.net/proofs/artist/0dd70640-00b5-4e0c-96ca-d871e96f92c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Classic Christmas: All Is Calm All Is Bright
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 0x3685606ddafa9ea5cf4dd5b2bc24972081ac9941dd2e5a3dbdc292067ef3adce. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/GB22P1805501.
Let It Flow (Original Motion Picture Soundtrack)
La valse des noces (Arr. Samuel Pegg d'après Le Beau Danube bleu, Op. 314 de Johann Strauss II)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e9b257f827493669e165e7a48e7d1270ecf17ca1c17c27f513a79cfadd050f. 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/GBAYC2001808.
Le cortège (Arr. Samuel Pegg d'après la Danse macabre, Op. 40 de Camille Saint-Saëns)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2606b4ce9b2f7ff3c8350708daa31e363adbdd4f21c946bf63fffff8c5e3a9a. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBAYC2001803.
Un voile de rosée (Arr. Samuel Pegg d'après le Concerto pour piano No. 5, Op. 73 "l'Empereur" de Ludwig van Beethoven)
Les Noces de Feu (Les musiques du spectacle, extraits)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d39fbd54874588f35fd8b07ac06145f59c0d8d15fc9e88e5f82b785d9e7c1a6. 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/FR9W12006136.
Le jardin d'amour (Arr. Samuel Pegg d'après l'Aquarium du Carnaval des animaux de Camille Saint-Saëns)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac126b70a0a21e5c0cdccd46d2f1ac8d94925f220e77b700089271d74441a3c. 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/FR9W12006137.
Le bal des fiançailles (Arr. Camille & Julie Berthollet & Samuel Pegg d'après le Trio, Op. 100, D. 929 de Franz Schubert)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b432df9bdd2fb8cb9fe1db95585da3bf751485ef23c353ad4c40cf7ebeab32. 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/GBAYC2001802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2606b4ce9b2f7ff3c8350708daa31e363adbdd4f21c946bf63fffff8c5e3a9a. 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/GBAYC2001803.
Le carrosse aux cygnes (Arr. Samuel Pegg d'après Les contes d'Hoffmann de Jacques Offenbach)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43704964c970e88b5fe8b9a7315bfc42c8781f898c595de1283c243a7b3e60a2. 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/GBAYC2001807.
L'orgue de feu (Arr. Samuel Pegg d'après la Toccata, BWV 565 de Johann Sebastian Bach)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd142111c294228b47e3de56d234bbedbd59135fc7fc1111a4f80f76271b8078. 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/GBAYC2001810.