Alex Andreev (born 1972 in Chudovo) is a Russian artist working in digital painting, using virtual and augmented reality in his artworks. Biography Alex Andreev was born in Chudovo, Novgorod region
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 0x3232f6564f266938375188c8b12745094e1556c55b9aaed5b97e62bc38e65bd1. 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/86e4880d-ae02-4c35-9a46-c5fac3d071e7.json and https://artists.proofprofile.net/proofs/artist/86e4880d-ae02-4c35-9a46-c5fac3d071e7.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 0xd2e00f2eb04cb2c82adfd6c028a8c81a3b8d023143d4ed0c4aa3255ec2ad4a96. 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/SMRUS0062471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb8208ece78760cb1633ca076559cff11f2814fd60f19b66a7fff2f1269617a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR2X42211724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3668fe1cc17476dc5c69f9298625f10214b3e100716b22e749bec43fef0e1e4c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/RUA1D2225857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf045d715cf4644c65a71f523eff036bb3b60a19e75d8b74e9bd98d7d380a9c22. 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/RUA1D2304144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c0fb49fc8c4f51806759d58554a0b50ca23587497b794491d7dc5652c9edaf. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/RUAGT2345704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa173415642d20108cb38cd5196f39bbca7992496eb3eef2a2acca11eab9c63b2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/RUAGT2377869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b961a3f80f0919be69eafbe88414d64418699f66fca38441692f906446cdd89. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR96X2415909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3af555bfa32bc82cbaa0e5e215a4bc6fd196c5abef23073f3164a7cfbfb37b. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/FR96X2432144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc671b47027ca2db1cc82d21224ec1e5d214e52cc2965729e78a21279c8656d. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/RUAGV2403538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05845693f1325852c45d86bff0e9262b50133fa09a01daab746c36de2c52042. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUAGV2404589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb7b7e0a88c0091deffd9d21ad45437c1c8f22b832d8dbfde8b53e35830987c. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/RUAGV2406441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b66420b4946c9ed69d20906bc83672dae56c3527be11386e8f9c2f13641f10. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/AEA3P2500637.