Stefano Secco (born 1973 in Milan, Italy) is an Italian opera singer. Biography Born in Milan in 1973, Secco began his studies under the direction of professor Alberto Soresina and graduated in pe
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 0xa6d059ba7dcc4ef98a06b47257927940462cb646d0c5bb71a077f4981089bed6. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5736ade-5a5f-4256-9a37-b005af355cdd.json and https://artists.proofprofile.net/proofs/artist/b5736ade-5a5f-4256-9a37-b005af355cdd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cantolopera: Duets for Soprano, Mezzo Soprano, Baritone, Vol. 2
Cantolopera: Duets Arias for Tenor and Bass, Vol. 1
Martha: "M'apparì" (Lionello) - Italian Version, Full Vocal Version
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 0x4a20c5ffeaee6cae5911676b9600bf31036391961b22dac9d1484947b7e06214. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:10:32Z), 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/ITT261205154.
Cantolopera: Arias for Lyric Tenor, Vol. 2