Szymon Wydra (; born 11 March 1976 in Radom) is a Polish rock vocalist, poet and finalist on the first edition of Polish Idol. He is also a vocalist of Carpe Diem. Career Wydra's first music band, Na
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 0x19d86ea4e871657d99efb97848c71c747aae29adc9a6864631c5e33e863a00e2. 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/f3dc35f4-0498-4df3-8856-54081e768104.json and https://artists.proofprofile.net/proofs/artist/f3dc35f4-0498-4df3-8856-54081e768104.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 0x830d10127a2913d66487894c59c09d467f8351d97e3bd7e3e584e54e966931ec. 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/PLUM70700796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447c6bb6885b7ec76f766417e277f0cbfa73bbe17131a7ae80d6cadfe2e45aec. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/PLUM71000606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8e2bb9e9cc1867817f0e63ffe4736e6722b39104b6e50a71a38ec28584d81e. 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/PLUM71000605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf918408bcb0a35344b8866f55218618b6038cacef8e304c0bd90b66c1adb130d. 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/PLUM71300545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce9eee16e4e1807fe34495fe6a513f85de27e56b9fd4c4b2da2537534381b5b. 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/PLUM71400146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121bdf7b51ce85cdd7176b43ae0e712a1eb499dea5b325d21c5b30dea684e107. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:47:29Z), 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/PLR022200001.