Jacopo Lazzarini (born 22 August 1994), known professionally as Lazza, is an Italian rapper and record producer. Biography Lazzarini was born in Milan, more precisely in the Calvairate district whi
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 0x6a36431067889cc66d2122db590a1cf916743b5e2a3a77833b6e233564a3ed27. 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/3bc0e565-99e1-419f-96cf-9328224ea4f6.json and https://artists.proofprofile.net/proofs/artist/3bc0e565-99e1-419f-96cf-9328224ea4f6.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 0x23ebcae921aa914f69a105a0c7ff289d614557e5b19bbebaa8b8bddc9c7e0f06. 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/ITC6Q2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b28016def033738591dfcd14bd722a0d6daf5b3dcebb3aa0babe1f30bf1f79. 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/ITUM72301341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb288d179dd41f397694c08d7d58c616565d279588ee53fb33572d6a8376cd31. 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/ITDJ72200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd24c5b693fe94f75b68d8e30ec846936ae3efc6a289a105aebbf7df2f46c17. 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/ITB002200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f6b96199caef00c329299e261005c9eb0fc99305837d2ed7d9c54919d30c23. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITUM72000367.
Gabbiano / Moonrock (feat. Lazza) - prod. Lazza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c69bd79c2480a13033e95bc10a30e9a58bd1055cb476cb3bc0ea0a6b0331848. 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/ITB001800659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c84b7e3fe78ad27902867c479b5263b64a1fbf5a7b641a0c291bef960df9113. 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/ITUM72400349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb251db6aa642c125f88e16a92ccbabf3104da907fa794c1ce02e942ef926770. 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/IT1F71900055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb251db6aa642c125f88e16a92ccbabf3104da907fa794c1ce02e942ef926770. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/IT1F71900055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d6a073dd52a91fb71079d0757de2f4856b626bb62f0fcc7fbd06e2eea534ea. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/IT1F71900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99041bcab6cdb96209c785e44034a8049086de31993fb1bb8b7045a9f282de98. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITUM71900595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac52969d5376464de4f51e449b979a75509e5b661847992264f14d721f7a5f25. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITB001800299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f8b6a0362be0dcdcb61de5b91856ede854a45d7f0f8bd7137a19768eec69cb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/IT0CF1800327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda472498391ca77529300640f5c729210531f2a8197a51d994c41f650d8a58ce. 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/IT0CF1800318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2184921a71a5336d047f5d4ddad5bebe3a7717d8557fb318d699cc5b92eeaaa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/IT0CF1700227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50db330336addc27a569d232ff13e0d405c6c08e6e1211a4c136ccc9735df58. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/IT0CF1700194.