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 0x61be3173498a72daeb06d61de8639c281758c96271c460725f2ec36e9b7dcd18. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/392eaf88-7a57-4c62-aaf5-90b7c9654abb.json and https://artists.proofprofile.net/proofs/artist/392eaf88-7a57-4c62-aaf5-90b7c9654abb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Primavera (Spring) Op. 8 No. 1 in D major: II. Largo
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 0x0e356bce8781c52132af5699dcd0519883d937adc6267aa403d86dbefeebfbbd. 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/USSM11904852.
L'Inverno (Winter) Op. 8 No. 4 in F minor: II. Largo
Musique classique pour travailler, lire, dormir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd06b4ab8da9a303688f22581baa357f7acffb27c4dde44ee8de38d590296b15. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USSM11904864.
Violoncelle Apaisant (Musique Classique)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd06b4ab8da9a303688f22581baa357f7acffb27c4dde44ee8de38d590296b15. 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/USSM11904864.
L'Estate (Summer) Op. 8 No. 2 in G minor: III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6a7b387f1cca8da60edc79094af7037d079b4a9fa82c3aefb8b72ca1449e07. 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/USSM11904857.
La Primavera (Spring) Op. 8 No. 1 in D major: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52cbb53af43eaf82dfb92efa461e52042808756a2c0dc9da02f01620ba9e243. 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/USSM11904851.