Tarek Iurcich (born 19 July 1989), known professionally as , is an Italian rapper proficient in freestyle. Career Iurcich was born in Rome in 1989 to a Croatian father and an Egyptian mother. He bega
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 0x0f45fc6d0f8a437d0446920221db7c3b8e8f44d62cbc1e7fb9b6f1d41ce0a6b8. 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/5178161b-9058-48f7-a8ec-ad9d7f783470.json and https://artists.proofprofile.net/proofs/artist/5178161b-9058-48f7-a8ec-ad9d7f783470.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 0xb3e0e51877f21a795ba416d30ea75c355d438f270d89338ce5d98c22ddf801f6. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:55:54Z), 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/US7VG1744296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0572e7898ef1661fb8b7abd95822b5f64f786084fe708679b066f19d6d2079f. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/US7VG1744298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6ce7a3fc82d398060516bbba42f91714ac6487eb75745cf44f3eb084f3ee14. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/US7VG1744299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957b5c29431789f61882f4e139604a90ca8b921c0332f12a95b8e5f94e78487a. 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/US7VG1744300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4069307e8b6ea264b2ed58f285a29016497063eee3dc7704ff22a69465297afe. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/US7VG1744301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a227e85e1b1104e40a69d3926d9830d5774d75c8ac505110e8a20a221bb278a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/US7VG1744302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0cb747161615907d22200fbc8d8003a3b6895a4d61ba209ab113cad59d44d1. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/US7VG1744303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dd5eb56f60697a9e770aed1df1c90e36fd646f7189a0c5fecef2a135b09a93. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/US7VG1744305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfda1daa99b59f4743c2ae2f5c37107105417b112674b12a523385d036bac536. 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/BRTOC0800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed06f53254d2e4d0d47259ec6311286c1e113a72396c0ec9ee8ed90a195eb8e1. 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/BRDEP1100055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0907933f0da24150b475064e6cd7d2c44d5aa22bf0eafa72e1236669c7f6df11. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/BRDEP1100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8f9671d09d56ae1e9d6b01fcd5b393c5d3a0225151572ec2f4efcbbb610f2a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BRDEP1100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d02efd1c2245e3c1a9f47d05adb366987cceff1ccd1a47f91f28614dda0585. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BRDEP1100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2268bbecf3f14c6d33905ddb100180e2860cdc81e1ccec45dd72e4a05795108. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRT0C1700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc286bb5fb1a09d94121e252fce564e5e93f14bfb820f0af2d1837cb7be2257e4. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:50:47Z), 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/BRT0C1700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14111fa6a00526694e45c74be9454fd9f7af709fa7113d773013af0a09936605. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BRT0C1700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafd6f92627e5128f77bb8014653c285a699bf4cfcc312fd058736a83f992730. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/BRT0C1700030.