"While having a formidable technique, she is not a virtuoso phenomenon, but something different that has to do intimately with music." Lorenza Borrani (born 1983 in Florence) is an Italian violinist.
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 0x3969fc0cdbc7bc412a0d296ecfc5a79ed6b66b57b2b816dc425515459e84e56b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a1ac318-2f93-4f71-a345-2df67543ba39.json and https://artists.proofprofile.net/proofs/artist/0a1ac318-2f93-4f71-a345-2df67543ba39.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Canon and Gigue in D Major, P 37: I. Canon
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 0xf7ce1a83cd6b775db8df0ba87b6e21a77c8a8725334f9d4ea63677b4cc741b04. 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/DEN960901061.
Brandenburg Concerto No. 3 in G Major, BWV 1048: I. (Allegro) - Live from Teatro Romolo Valli, Reggio Emilia, 2007
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb27a6ed7e0b7748b81d21b967425f6f850264d6befaa6c1bfbf0de048c4e6b. 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/DEN960702021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ce1a83cd6b775db8df0ba87b6e21a77c8a8725334f9d4ea63677b4cc741b04. 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/DEN960901061.
Handel: Suite in D Minor, HWV 437: Suite No.15 In D Minor For Harpsichord, HWV 447: 3. Sarabande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224c11e3ff8eb60dd9b50c8b1639e4acdcb238ef9b1f215584e4ec4eba43e21a. 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/DEN960901010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea02328ec4b79120e2b973cb56de559909917eac072601eb53d1244fc6213581. 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/DEN960901000.
Brandenburg Concerto No. 3 in G Major, BWV 1048: III. Allegro - Live from Teatro Romolo Valli, Reggio Emilia, 2007
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962754d7cfef2edf56d53559c2b2c329c960a12ad5fc985e1b3bd397f8e01575. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:56:37Z), 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/DEN960702023.
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