Fabrizio Cammarata (born 30 August 1975) is an Italian football manager and a former player, currently in charge of Eccellenza Sicily club Kamarat. Career Playing career Cammarata started his career
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 0x167b9efb1f486dfb35c4fcd35174503c1f64a5920ad9e13291bce3b1f6ed0348. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fbb96fd4-20dc-49fd-93ee-62f492c8f421.json and https://artists.proofprofile.net/proofs/artist/fbb96fd4-20dc-49fd-93ee-62f492c8f421.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 0xc47ac21a33ca814a825ca6df4a5b2007781f9996cc0cbfa45a17c3729c114067. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBGLW1700191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b904834ef6bef4777220172d161bf6c705c3fa406ce5ebb18be7bf26c3472fe. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:09:53Z), 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/GBGLW1700098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce27e6b9cb82c50b9fa6069961d67ba18e739d7f07be4295aebb629b346afc2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBGLW1800263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1cf4b4717a57b24694f214327b3ff0987e576e22f57db9f64d00e40adc7170. 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/GBGLW1900042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ff6c68858e1cbd05718a946ddf14ad9b6eef54f2b9c09478fec5533184e2a2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ITQ7F2500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f9842d35f0ffd033a1b942408f165954451ab704fad29a7b2b8864d0df8bba. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ITQ7F2500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75de8a11ee9d47b46dbb092e34f842d2c080f5a529947b0c7622455d9cb9c466. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:06:18Z), 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/ITQ7F2500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613781a2268af590db5f5da8de9be718db953b7ee783dc8901f6c891d741652b. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:48:38Z), 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/ITQ7F2500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748f654a06ac175d2421dbf03663ea67c58a1e77c20f8483b592f17b69793d33. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ITQ7F2500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79bc97ae62b088a6ff6b67ca801129d72cf6502d88a6501be20964aa2d2d6fc. 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/ITY481723001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc6254d3dd1a991e30a8e1ca2b957e1982ec64abc9d8a15f6a03ad043b07459. 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/ITY481723002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b4a7cd69d2fdffc825a3e745d38cb9814f061cd92149834d3239f989f6d193. 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/ITY481723003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6c3f68b7271ce8611a12da5fe27cb313642dd39b325eb0115bd20f5d61322e. 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/ITY481723004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714b4a96e45d26eba53367abab0c972ecc8183309d9de38ae8af363507c516dd. 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/ITY481723005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb908bb7c0b6f2d4fc6415ae008b130dabf431f23dd94cf15ca8b3c3977626df7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ITY481723006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85fbee2cad743faf2487f59075713f69b66dd0df385d1d64da8d818450dd82c. 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/ITY481723007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c333adb92eddc0e4b5635c9f5e0183cc02f2e22126f0933b8b8f538362ac3c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITY481723008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2542e07bc8bb0e8f318246206a8303ef773ec486eeb97e7585c0ae09ca3d9b31. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ITY481723009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d072249f97e2a9ebcd9357f29e1a329efef8b1ecb5a8438127c4f5822a2669. 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/ITY481723010.