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 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 0x072fdbb71ac786feaf3fd18487c1c0976906ff3c75fcf94fdca157ce68da4389. 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/1fce1102-79e0-4b0a-8a49-fa2a10f48f4e.json and https://artists.proofprofile.net/proofs/artist/1fce1102-79e0-4b0a-8a49-fa2a10f48f4e.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 0x70833b8b2186cebaeee43d04321c07884296cee73c5e8d0b95cdd5ce6d5146e8. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/ITJ790600201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fbb9108135c4922652d521748e165e6a0f58289f170016ad88f2d0b296552f. 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/ITJ790600202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d21cb34a66f567abab6abc0fcfcd043ac5461f75e39f9421ebb4b6661fbd8f8. 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/ITJ790600203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9012302433a7a9e1b0fa8c28d3b9a7ab74427f3fcc4467b79f1db65346867a61. 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/ITJ790600204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62aed172fe56d3b024546072c0b1f4d6f3a3095501345257d80616d4b311871b. 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/ITJ790600205.
La macchina infernale (A History Of Musiq Violence)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0561ee8967971daa27f5d5b489208104619a8d03da9cd34b2774bae512ad0c1d. 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/ITJ790600206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31363dd6616a598fc0224cd36a13fb855591a45a95e91e43892289de55c10ab0. 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/ITJ790600207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2a147944f6e982f7a1a68acbc9f983b9998fbcb448e733d8be38de34e9dff4. 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/ITJ790600208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b016eb9993a29b38aa3ed4cf7c98b8ac0bd80ed96c9f710ad4a03354958fd4. 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/ITJ790600209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d815ff2b620cf259025a863a468546e13cb9dd942d0406e62440f6b42a9aa9d. 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/ITJ790600210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd71e9ac2fb5b8e6a6174d9f6e0efac4ca7858a21af3f02fc65b6cb346bbd4f. 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/ITJ790600211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2407e2683ab4f326b5a99d00b644db7e9f0792a7e0547e1036702022ce22fd. 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/ITJ790600212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd140869f4406625c78b4c1ade4124e6ac325f5ae60e1aea3e98470dfde6af391. 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/ITJ790600213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec40eca9eee74749dcf4a8d6bde6ae36d5bb6294e46c47f818974677c57df78. 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/ITJ790600385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d940f0bb26d4e890d96e3de7d06f500a591ec41e859072bcf569769117896f. 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/ITJ790600215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf260fb02d9fa0ca6ec5cc8b4cbaaf689ec40d21833aea001a2ad58a0c38e3bab. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/ITJ790600216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959df21602cf04763bf90fe0595317b35e2feab149f14bc8245e868b2b72aa6a. 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/ITRSE1600478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3781c5343828acc17c126b5ff53cb29fa392f36489cc3f1b9cb649d3201caa8b. 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/ITX480900018.