Marzena Trybała (born 16 November 1950) is a Polish actress. She has appeared in more than 50 films and television shows since 1971. Selected filmography No End (1985) (1985) Blind Chance (1987)
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 0xbb9bb82721dff2e9dae9e74e410f9b93b50ecd65301675f1580cb3aa7b0ddffe. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/404331be-abd2-492f-a180-1946d2842890.json and https://artists.proofprofile.net/proofs/artist/404331be-abd2-492f-a180-1946d2842890.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Martwe liście (Les feuilles mortes) - Live
Wojciech Młynarski Zaśpiewany (Dobre Piosenki)
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 0x7cccdf380bdf9ee058c06e0413259459414712bcf7c5de9664aff256246e3497. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/PLB171200923.
Bardowie i poeci - Andrzej Poniedzielski
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4a0e4ab85df6cdd098b5f1c1250285a896add78fd82d51a470c2437f29f390. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PLB171200931.
Dziekuje za swiat - Piosenki Agnieszki Osieckiej
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ab6f56486f69bfa2d9618683e5b1795858944f66bef53b5995a38b704bb640. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLA800994107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d3b80830453c3353ea82caaf31d835d2617488d98d6a269e78e2e4c58d28dd. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/PLA800994110.