Alexey Sobolev (born in Novosibirsk on 1 September 1991) is a Russian snowboarder competing in slopestyle and big air. Sobolev qualified for the 2014 Winter Olympics where he finished in the 20th pla
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 0x3df6280d9792766cef4eef99fe5c63495bd936ef6cb69b9bd94c4c9c9ac1fdf2. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/17d96d18-8bc8-4b52-81f4-f6dcb036339d.json and https://artists.proofprofile.net/proofs/artist/17d96d18-8bc8-4b52-81f4-f6dcb036339d.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 0x1077a6cae3ab4459a5a4417c1a7d12302ac8496b9404b072a03dcfcee63e4725. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZS672295519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedade3fee8d7bf5bfe2e0b42001ab626e213105be1700f68ea935e5a3015f68. 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/QZS642255310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49df6e1fba3a5ed081008e80ec83a1961c136ceaf6fe4d936cc32d04ece784d5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM42K2305275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118aac35fb072ddbaa4b42a1893026fbc8973f47eb660965fa17d652cef7ca93. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZS632322135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4463d1688edfa15777d6a8d40897e8bb7c61ce59475237519f9281dacf817d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FXR592300610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2349fcfe24ff886f16f7aa2589ebeada7b80dcbd144bcc75981715249080aa. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:36:08Z), 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/QZS672467853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01babc83231bb54519c0f820d4a5b3d99e57a44f076ba684aa6209c46235f56. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZMHL2416469.