Luca Di Stefano (born 9 August 1990) is an Italian politician serving as president of the province of Frosinone since 2022. He has served as mayor of Sora since 2021. References External links Cate
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 0xaf2913e215d4789d5bea3e3c93d4f1019234924d40d301c5eb4d4bf38dbd6e7d. 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/c407e2d0-448e-47b9-8953-ed3e7e7ba1e1.json and https://artists.proofprofile.net/proofs/artist/c407e2d0-448e-47b9-8953-ed3e7e7ba1e1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xe5ec1aa194dd3aa88526b148cfb2bb20fc6de4499a68481ae49a6c2b8b3cb257. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/IT6KE2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95db33fa0a407f4550317bd466f964f7dd7c9b3444ed43fdc7ea23e2026e2ab0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/IT6KE2100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889908162100df0d4bd5c6715c42602e2c54553db91a18a3acdaeef91f2d6d40. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:41:11Z), 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/IT6KE2500192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9329ad2a26e719b41900fa119d93a0d14e74be4576dcafcbda5ec7f5760b596. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/IT6KE2500195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd650999cf0f3e959d8d74b872c6f5a185c648a1a30e91a3a7e36fd89b8439dd4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/IT6KE2500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e95cba418a8905f39a0437e75f7e6a6c9dcd9da5556656ed97210675b5b4f0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITB001900695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e95cba418a8905f39a0437e75f7e6a6c9dcd9da5556656ed97210675b5b4f0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITB001900695.