Maria Teresa Peszek (born 9 September 1973) is a Polish singer and actress. She embarked on a professional acting career in the early 1990s and went on to appear in over 40 stage plays, as well as
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 0xdfb4990da629e67bef994c07f61fd14afe9ff9b1fc1bb825ac32043d4182e646. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d83278ae-6879-4eda-ac3a-04feb9e35aab.json and https://artists.proofprofile.net/proofs/artist/d83278ae-6879-4eda-ac3a-04feb9e35aab.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 0xe88543675f75be78182780c3d3e2cf790aa527fd5f9b9c78f8658d230e52f4ac. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/PLA810500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85d6f140aeb4ba7000f61ae7c2681ca25dac1b5d152c32deaa3a24f5a924a6d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/PLA810500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0ed945c7394f73b7ddb700adcb2820d8185a601a8a6e664dec3c5311cb7e65. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/PLA810500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf572c7e452c37a915a27ac93eba54d8113bf529f08811d3a3abeefbd0d9ec2c3. 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/PLA810500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d273fdae37fec0602a81284d5ebc1c2bee23cc30cce583a83e8791f40d86738. 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/PLA810500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2408cf9ff8d7efbcf99c70aa34ce28d2ddf2051e8d8f2c8025f4122656f5a6dc. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:42:12Z), 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/PLA810500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa10afea6bbe2a564bbb77ed31a7ce0bb14c5632473fb7e6351454b93bc63b0. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:48:19Z), 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/PLA810800063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b076f54002548ae4e696177e4b27f42e78e71c48d7c12c1ecf97da1396fc1d8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:55:02Z), 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/PLA810800067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722b0a030c2ab9e041a57162de19826fc388c5e27838f1296f93977812f55cff. 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/PLA810800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75b9c6dba950b5e540a1bd722723f0052f0124dbc78d3ddbf4707c2a48af567. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/PLA810800071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa547b7f645f50de241a5efa80c817ad9781268d573eb45e0ad93ddf0a698edd3. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/PLA810800073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0605b8532c7eadbe3a6167bf6738241afb611697af00e56674301f89dd0803e. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/PLA810800074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e56ad7bb5a18bd7d27add7a7885e865d81a14f7330d7b9e685279fd553bb35. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PLB820012335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029995cdcae5c989f14776c6b53e2944cbacece60f14c0c8d74d98a6456d437f. 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/PLB820012337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c957391466141728e211fb9f31b49105dc0d7588707e61b84739b78344b427. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/PLB820012338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4301911d0db3bc03200c7a447b441cd79416ffb521a9735ae0885f597a8b3784. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/PLB820012339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad74867396f49f2c9002a4b52c270cbcf249cb1fe81f9768a4d4ce5751623b4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/PLA551502702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcadfefa4793eef908bc76d3f2a1e261f6d05688d1d7bbb5f5af01646067865. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/PLA551502703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8155d7bf2255ffa4f103e69e98e8e1524b6613355a38da78bb38aafd3d00d5f6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/PLA551502705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6422903e9f10182527326ed0e043c42553b239215773b96e06344125e9784183. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/PLA551502706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc9358684c84e0cb74fe7afdaf228d43cba920ae76280eb1cfebe793cfb6397. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/PLA551502707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786e8a343e2e523452d1d44fd6e1fc599d74dc9a3246ac5a8ab6722e6e97389e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:47:36Z), 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/PLA551502710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf3e6c73a67ca25032708df834c17f20b7e8992a10a81af74d0e69daf18de02. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:34:50Z), 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/PLB822100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339126407caa9d80c309a01060a0c68b80efe4e33cc20c4d4a149f148b5e4a34. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/PLB822100077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dda7efd9681bb71e5899fc6f61b72298470f7224da4b964a21d619c3071af8c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:30:53Z), 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/PLB822100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcfc669795e4882c100d81ba9c1510ea220a19aec406ff1ad4050b81b463577. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:08:00Z), 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/PLB822100079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a4cc9b045e8e3415b55e1e59e3e245290c69bee99f1eac361ff6fcca4f2fc8. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:26:34Z), 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/PLB822100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1157002635d8adc1b97056d24db4d23dfac8d30327616b47dd7d80d7cbcf0285. 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/PLB822100082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2619584aff4b4b7dea525b7ea013c2dd6ca87aeab8072583d63682b3a30b9ba2. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/PLB822100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b9c086966ec4f5f990c521347956b9f5bf930960f0738ebb5dd7662f9d7eb6. 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/PLC061706185.