Norki, until 1945 known as Nordenberg, is a hamlet in Warmian-Masurian Voivodeship, Poland located in the Gmina Wieliczki, Olecko County. It was established in 1822 as a folwark of nearby village of N
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 0x863f1543cad39515341f07bb10ecbc0f8fcce29e813ebec0f595ff550ea0c695. 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/641ac494-4658-44a4-8006-ad8295a6d88a.json and https://artists.proofprofile.net/proofs/artist/641ac494-4658-44a4-8006-ad8295a6d88a.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 0x014aaf121dfa955d2a535b01c0b130fe8449ba9a81cebe41ebe6271f89a2f408. 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/QZMEP2211444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb7b6bac6757452fc2499a5b93ffd3dc1a3aaa17a7cc2fb7960ae4c4241adab. 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/QZMEP2211445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a12cc1d4fb9835fdd4d9105f23b74bc4dcfa1cbba1ff17d88e6cb005a48d92. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZMEP2211446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7732db10d9f0e51b198ba21413e757d1ffbc4d0f6316e12d483f0fb6e0ceec. 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/QZMEP2211447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53e810142887c5d7159d34d9c1f19f5ce936add0760d925d7c72dd5da003d62. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZMEP2211448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4388f190a547c4149e2ee75ac9f79850ba4922bce24f4c078e1a8343df07b56. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/QZMEP2211449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb1d9669e156b91413957f9f41e88b12ed9ec5477cb51e0727127b877d50646. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QZMEP2211450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7c5339834418f71a88dcf7e3500c19e5b5068687ee62f95390fe981a3fb61c. 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/QZMEP2211451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf1d74b758d3f39e14021bb3199b9eaae188b62ca0e3c9ff246a9b291fecbbc. 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/QZHNC2199203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda980672765834957af4f5f31bcbb87f062e43422c277f03de30b61d0c3fdd7c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/SKG992000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748634b4e1ba2c9455a662477602e4c5b99d17c701398d4209c8beaa4ebe96e3. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZES52278169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80175c1d1c58b3b1906775bc95dd86348c0b2c5f3b5726cd9e3582b4ce9af828. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZHN72151285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b7f45f14eda6ac3edc3472d559deaa2f0f814adeef438f840b93a2b9a23542. 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/SKG992100111.