Piotr Karol Zioła (born 24 November 1995 in Opole) is a Polish rock singer, winner of Fryderyk Award in the category of Debut of the Year (2017). Biography He's a son of a bassist Grzegorz Zioła. H
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 0x2407ec073ee427149632b91416016271fcb83e5a1b669fb0974989146cce6247. 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/534cc097-4f5f-4900-84cc-f4138baec26b.json and https://artists.proofprofile.net/proofs/artist/534cc097-4f5f-4900-84cc-f4138baec26b.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 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 0xeb6ea29589b61c81a0b1f234c3e8d8f93338d7ddb93f586050fe9a35f54e6b8b. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/PLA551600107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084deba8b2845e45e84dead309e64018ee6bc6efcb6096ab9467d21ac3bd04e6. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/PLA551600109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafca49424c5f2ce37c0c803ee6611d571c070973338bb17bad94eec11abf0f1. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/PLA551600114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a55f25ba2ed061e1f21a2094390ad5ff0c6c993ee707748c186493143f8700. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/PLA551600117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd28a0e0562c244496b64380dea53f07dd35a6afdb2023c9d90d65d0286d95de. 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/PLA551600119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ba021a4385af084d17bfe8d5560f0437e4c936bef6ab1d9e52213491ef1763. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PLA681602058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f20804ffb7320962122ce4c0326bbb71b86f81d2809f01bff5267e5fcdf48c8. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/PLA552000434.
Prąd / Choć czuły gest tu radości niesie mniej, to krzywda nie rozlewa łez
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087236f5b238be2696189c094c7fac7bd57d6cd3aa21c620e1c5f61889073c6d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/PLA552200095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ce702e61979468cd445d2f96568641a2d1b736900068c8e0789edb48764834. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/PLA552200507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087236f5b238be2696189c094c7fac7bd57d6cd3aa21c620e1c5f61889073c6d. 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/PLA552200095.
Choć czuły gest tu radości niesie mniej, to krzywda nie rozlewa łez
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3784469ec73ebd5e90a93c3ce4c1a826e9bfce07f21eaa708d50a7a62b87267d. 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/PLA552200099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d30fd8b23d8ea83afbd7644b4430f644f393bd14b3e5d218e65dd2245df789. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PLD111800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7880c2b9d1c8ca73b2b64a574cfd6d4706901cd118859eafca255c033b6b27. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLD111800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f67947e99bb67005c92786a756a554eab0eefa6896506bca3b383ca589bf42. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLUM72400486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ba021a4385af084d17bfe8d5560f0437e4c936bef6ab1d9e52213491ef1763. 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/PLA681602058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d67b2704941d47d03deb61b2ad81dba3f6b40b0c68972c0ca647003f651bba. 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/PLA551800412.