Grzegorz (Polish pronunciation: ) is a Polish given name, equivalent to English Gregory. Its diminutive forms include Grześ, Grzesiek, and Grzesio; augmentative – Grzechu. Individuals named Grzegorz
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 0x96f2f325df2912645a8b5b3bee19e10d5c4554dd5dd8e3fd4ef7299165f64e44. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7566f6a8-6a42-4288-90e0-040327cf5c03.json and https://artists.proofprofile.net/proofs/artist/7566f6a8-6a42-4288-90e0-040327cf5c03.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wattepad (feat. Kilian437, JulioMC, ODG, Grzegorz & Joey99)
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 0x1f2f49eef599a293fd0a3af27767806b9ebc6736aa27667ea31b4d9f672a53e8. 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/DEKF22100897.
Kümmerling on ICE (feat. Kilian437, Jonzon, Grzegorz, KKuba102 & Papke)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c32e1f0e94549ab88846df43173c3a6e2b4920633beaf227d08f12d9ed2f493. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEKF22100898.
Statement (feat. Grzegorz, Joey99, Kilian437, Samo104, OCboyblau, Jonzon, JulioMC & ODG)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332fe73a4a7da8960f8c5c97137e18ebdce876cbc75997ba4e98dbfd7b3bfd74. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEKF22100728.
Darkkeys (feat. Grzegorz, ODG, Kilian437 & Lucky)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ec2566c66bcdedb1e1bf7f1b11d9c959f8a6e72231bb9def696363bbcb5ef8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEKF22100900.