Uladzislaw Chyzhykaw (; ;Пашкевич, І. Автор хіта "Гарно так" CHEEV випустив новий трек // tochka.net, 01.10.2022. born 31 December 1993), known professionally by his stage name as Cheev (stylised in a
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 0x237570d07c278de79e6b399e32ca548d3c3445186efe8c9fe6e9f4a6e30fcd55. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91e5c4ed-1785-45e6-a852-453cda4ca219.json and https://artists.proofprofile.net/proofs/artist/91e5c4ed-1785-45e6-a852-453cda4ca219.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 0x4cf719a7c4b0b97582cc998c127aa9b5df5371bef1cacdccb02bd51525f68e1c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/UADZ32110088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac3f352cfcf3ee4dab0315807ff5bb170853517130c3c35646a3d338625ac7c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DGA052542077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff88d1163f460d04b41392e7ffa1ff2eb726138921a0e208cfd980f0f273eaae. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:51:16Z), 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/DGA052542079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ac1b0ff667cebee87a3813e663b9f017b0791b940f4cdaffc814bfe7e0f8c6. 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/DGA052542080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f40ca7d1a4cf731a96485102047940f99701a9d7efe22b8594037893bde593. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/DGA052542081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6981148797efc31870fb5869179c70652d29bae4300c5ab6b2e2d8f28e1e538f. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:57:20Z), 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/DGA052542083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd1d091892ff9bf88b9342dbb6c3600a4a6267d50c5c0d38d6dbdc78f7a50b9. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:35:10Z), 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/UADZ32110006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a36b54f89bd52cb688bc2ce95ac4e4e67f8de6061b9f6d0467d378a9e792cc. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:05:32Z), 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/UADZ32110094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19f0d2977d3fec2506082ff909e229d6a3597642e462670abdfa7f8120a9772. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR59R2333077.