Manuel Franco Rocati (born 30 January 1998), known professionally as Rosa Chemical, is an Italian rapper, singer, songwriter, graffiti artist and model. Biography Rocati was born in Rivoli and grew
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 0xfca51fba67b499eaa85f1a030219ca125e953593ef7eea5a61b80a1665653581. 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/f63aa1da-25f6-4124-ac5a-1005e82e3ecc.json and https://artists.proofprofile.net/proofs/artist/f63aa1da-25f6-4124-ac5a-1005e82e3ecc.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 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 0xfac87aa743763502bd27d29bee93bf94d7211729ebed7fd243996ba1a19f9356. 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/USCGJ1942148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cc9168fd19c6a58d05c68378bc2f0ad8126ea26cc2d7b441f3beafb8f97996. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USCGJ1942149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c609a59d510f8f4f720ebfe3fff0233eff866b09960ebacabdc2bce9172685. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/USCGJ1942150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce8759954dd845d5b13885529cdd88ef967122addc008f5e67ea8e6a608834c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USCGJ1942151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a847cd9f031854760a372d0448c28d1c7c4176414f4acfadfae8d8a0ae7e2f. 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/USCGJ1942152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80365fc3927382e1957b32cd24d7a23a47111bd7de4d3fb199ed90d3eb906ebe. 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/USHM21921332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05af0a884a686842a19cec691c04d9802c54298bcbbf275f3ba352dd1a975e9a. 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/ITDF62077026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fc0ba334083b959557d519a4d9f1432c181b92c6426e2f71111b4ade29a8e6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ITDF62077049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a6f0b9386d52c867c3cbefb6affa299949bf8fe63306162283ec033a187c65. 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/ITDF62077074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a410cc56eb7fab4bae3204800c702154a408b737ed7089cc3a21ad3675b8a6c. 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/ITDF62077079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6c711b5f09d108c4bc94d3804408e93ddb9b10d146b7651a73eddccd81c011. 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/ITDF62077081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a42bbb38ec6b74810737316066c4b9b5fb8c57b32d9a7a34b9f1b3f464b82d. 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/ITDF62077083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd37e522cd939c8b57aaf528864f286a822ca061b0320929e2b4e463e7d35ae8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ITDF62077084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19c7f00bbe118e3706f0aa9741056b473cc870316d28821a1e97e2f36cf296d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ITDF62077086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a4209eda235486af0d20df45cbfd0e4d08494a2d5b7b31dd05290658488159. 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/ITDF62177009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18c2239bba00e9d02da8bcd9830fb871d9e869b2985dc82b2bdc57988ba4be4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ITDF62077077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7826ff322b378d3562a0a5cdb6d62f55f53d236329a68e2394cb405e3b6fe16. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ITDF62077078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fc0ba334083b959557d519a4d9f1432c181b92c6426e2f71111b4ade29a8e6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ITDF62077049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a410cc56eb7fab4bae3204800c702154a408b737ed7089cc3a21ad3675b8a6c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ITDF62077079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05af0a884a686842a19cec691c04d9802c54298bcbbf275f3ba352dd1a975e9a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITDF62077026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b91b1491e4225fda7552e7528aa033e9f88474909f866b833458bb3e78c3d6. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:53:37Z), 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/ITDF62077080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a6f0b9386d52c867c3cbefb6affa299949bf8fe63306162283ec033a187c65. 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/ITDF62077074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd859b10bda92a7b889f0c8ce00d43dd14b69b4113958893d027658267b06f1a5. 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/ITUM72000620.
SOGNI LUCIDI ⊰⊱ (con CARL BRAVE & ROSA CHEMICAL)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfd4565650eb9a0cd64699ff96e1191e3d72f5bd0255b68311c979af0cc5441. 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/ITUM72001384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f4e3dc522f3e76acd234e49e670435a565bff74926e450bc7e549a5ab31394. 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/ITB002000448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837471ec7f9abcc8c4969c464b1771ca56e7b6b98719def4f118e2d02434a32f. 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/USHM81976172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2194850f53a89f67784bb212f868530c7dc471f2d947df074112589413cae9b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAEF1913274.
OK BOOMER (feat. Rosa Chemical) - prod. B-dope & Young Miles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269657ad0e807d04c5d73d0d2c48ea3aeef9025f9292150b3a27ac5b01072502. 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/ITB002100108.