Rauf & Faik (Рауф и Фаик) are a Russian pop duet of Azerbaijani origins, formed by twin brothers Rauf and Faik Mirzaev (Russian: Рауф и Фаик Мирзаевы; born July 7, 1999, Izhevsk, Russia). Their debut
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 0x899286307b96076b5d1773daf0fd9f5dbcd01880bce8221be96be4f018662302. 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/92bcb4f4-ae64-4a19-943e-3874b719b612.json and https://artists.proofprofile.net/proofs/artist/92bcb4f4-ae64-4a19-943e-3874b719b612.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 0xf12cf517336601b5fb9f6dd68c1702f40521ca7c2d823b50c89b3b150ec813b6. 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/RUA582102601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb891ea7768582cf651f68e18bd739ecec9a5cd3ea3e6c127d692649b756a828b. 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/RUA582102605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dfb1aa3ed0299733d20fe1e7f0c91a4d26baf49279244b5fff6bf6886d4bf2. 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/RUA582102609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea2305947bc8cb968693210a4570b9eb6a7662a85dd7afae781702569ba5498. 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/RUA582102613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97512f0b6ef5679f2e0ff9897dd6cdfa34709b4cc0a5d8e82f9796c85ad5f424. 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/RUA582103546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe463b27a229c090e3ef5556bf5e85a3e42e2b8b035e2e051bab1f05034cc42f6. 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/RUA582103575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750c836aec53c2d436a838060868912b290e814021884aa219376485dba633b3. 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/RUA582104465.