Giacomo Rossi was an Italian poet, translator and librettist who settled in London early in the 18th century and wrote librettos for George Frideric Handel, between 1710 and 1729. According to Rossi
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 0x3b575d19f3af79e3e28c3d2398ecabbd25706519cb82e13b2aaa724ac5623adb. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa139cb7-cfcd-4edc-9dd7-477c2d799626.json and https://artists.proofprofile.net/proofs/artist/fa139cb7-cfcd-4edc-9dd7-477c2d799626.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rinaldo: Aria: Sorte amor vuol che quest’alma
Il castrato del granduca - Arias for Gaetano Berenstadt
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 0xab0c181e96c77b139d2e764a0df44488a1537973331719592f426838a7944fb8. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ES7892301001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a33dc3a1375b6155bc607643bdc866755b6aed5dfa1c0f0ad1fd7d3badd46b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES7892301002.
Rinaldo: Aria: Pregio è sol d’un alma forte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a96310ddd43fd4903b16e0c9d24167336f41b8f93af2b0c709f8ce67a7e82ed. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES7892301003.
Operas Operetta Overtures, Operetten Opern Ouvertüren
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3c4ef29e2c0a6e95e72dde7590761fd2d6616886ce84074cfdd727fa158290. 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/DEEP81000627.
Lascia che io Pianga - from Haendel' s Rinaldo HWV 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c34de2ddbff69424f3626116d419beba1241fcd1fb1b0f8bc2e4f4ec8919a4. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ITK251630001.