Stanislav Pyatrasovich "Stas" Piekha (), is a Russian popular singer and actor, and the grandson of Edita Piekha. Early life Piekha was born on 8 August 1980, the grandson of Edita Piekha and the son
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 0xbf6bec8e813a59de8159f47f59b7e39955a21223dd46f99058e239cfb9c3c2d9. 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/ab3b4846-a5c2-4a90-af8b-ad89e5b030aa.json and https://artists.proofprofile.net/proofs/artist/ab3b4846-a5c2-4a90-af8b-ad89e5b030aa.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 0x27fb95f0eabe07085a39d77b67ad99734ecec9ff0d407c35f72be481f50f9f1c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUB421303598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f36009f2ff7d630919048a233ad77f6ce5e8fe08b085ffc3b6ae09f45cd8dc. 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/RUB421200965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba744cf303f1412074d898024283de8591d654b1e756a2505950b0560829c9b. 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/RUB421200966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c82aeaffea956fef6c7694ae0166efffc23399f9e8e8fac2b0e125aa0df964. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/RUB421303208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b99e2c1ed4977193b7db692d36e9ab1fc6b1a2923bfc29dc19b0c1f38e9ee8. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:19:15Z), 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/RUB731504340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c4d80511d1c455116b1e33a9e8bfbbf8e2525854fab46dfb6e52e86305f2b9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/RUB421800635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ab913e1fd503f15f9ebe0926e6a03e8db1f1c7b64d05e9a1b20f84279dd440. 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/RUB731590864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52163bc3177112533f4b145c3177ca647e82829b05aa9ba91db160c3e9cbf73c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/RUB422002381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b0bf032929de6aa3064edf13dd3d259fb0cd22a6fe35e116181881920f2bdb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR96X2189993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e801c70e2fccc72bc90d12c96509647602e72a4179f3ef2623f6aba3270dbe. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/RUB422203362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6bc58a3b00ea6840aabecf8d27a4e9adb53c44001639405d72d48e63c59725. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RUA1D2369892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ebf9158e6675a98a8bef4a3707861df5738fb778afaeb6001d1b42f4d53da5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/RUB422401510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c416f5270f46429cfad1e26966becf7c9fa54e3db0f5b3a4454711388175b60. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/RUAGV2406166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132c892d6d79faca4059ea821aaa077e49238df748eda14c663196bfb2c6a57d. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:48:13Z), 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/RUA1D2583759.