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 0x364762af5bc502ec0091603887c30c6d031d586a1a605ab2be3303b1e25cccb8. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4f9fbb01-e51e-4e10-a160-7a74b041b03a.json and https://artists.proofprofile.net/proofs/artist/4f9fbb01-e51e-4e10-a160-7a74b041b03a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart: Clarinet Concerto in A Major, K. 622: II. Adagio
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 0x5375f158130f0d7aac648ed2d9c2f8953c3ebb644c351efc5fd492d12f06a0f9. 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/GBAYC1702530.
Bechet: Petite Fleur (Transcr. for Clarinet & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5518ec733c9d160b85231063eb6cf51d7ec48e472138ab097228d8003c06f7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBAYC1702531.
Shostakovich / Transcr. Walter for Orchestra: Suite for Jazz Orchestra No. 2, Op. 50b: No. 2, Waltz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2648a1fd1281e78e647875655704c0807792f0cd50acf5c56bca60b5fff961. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAYC1702533.
Morricone: Gabriel's Oboe (From "The Mission") [Transcr. Longfield for Clarinet & Orchestra]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f76a11748a4ccce72df61d23a695a08534c18574155a3f0bc0936835b2ef70. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBAYC1702538.
Rota: Trio for Clarinet, Cello & Piano: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7166c4d0ba23a4319e3f695f1c1fe2b2d235d06ffae8e03a2fd32ca3adb3e4f8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBAYC1702541.
Bruch: 8 Pieces for Clarinet, Viola and Piano, Op. 83: III. Andante con moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619d7ddc5d42732439e222a4e8551c406615711464cd170aacac91ff89bb2b37. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/GBAYC1702532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d9cb240a430bd0a4955923d8042c3dbfe0da3e52d052db7b7c592d94c55b30. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/GBAYC1702534.
Gounod: Ave Maria, CG 89a (After J.S. Bach) [Arr. for Clarinet & Piano]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748edb28d197a4d1c716113602412504b00a1271c50985e37e9b7137f08bc50d. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBAYC1702535.
Les musiques de Prodiges - 10e anniversaire
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f76a11748a4ccce72df61d23a695a08534c18574155a3f0bc0936835b2ef70. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBAYC1702538.