Lutek is a village in the administrative district of Gmina Olsztynek, within Olsztyn County, Warmian-Masurian Voivodeship, in northern Poland. References Category:Villages in Olsztyn County
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 0x7bcf2674eebfb20d6bd59c610fc703d8c4790590daf36fd467d71345dc954096. Chain 2 (Bitcoin): anchored in block 953875 (2026-06-16T02:12:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07242dad-9a9e-46cd-9c67-54bc27209656.json and https://artists.proofprofile.net/proofs/artist/07242dad-9a9e-46cd-9c67-54bc27209656.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 0xc545614a9e00f35fc9e91c8f5df5493da521ef0d44693838dcb06d8c0af68338. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAFQ2148425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9c2163273182537d9d4d69535e6f35938c7ff48ae9bf421f03a6a30d5cb273. 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/QZQAY2280841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71d16a45d64658230d46001bb99dafc5974087aee600e34f2a1fdba88f9e95c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZQAY2216243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40e8e2cde206e4d5fbfa3c61db917e44202462d96a9da95e9285826b6f66e73. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZQAY2288981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5de80bfcf431ed419cba62afa2b4fc3fbe05ca6576412d056a29d0cc173591d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZSYP2137033.
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 0x5802b89ef1588cec8fc2c034e037cce792a262d91ed35ee9b2280a24a4e88261. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/US3DF2233842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe279fa65e78c3a4e0959b88a83386f52421263a9e7b1eb37234f65a602889077. 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/QZQAY2238106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac499e5b95e77f841a3dc6aa30a45d7601a5ac3485105ebcdb528a69e6ed3894. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZQAY2224767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e16015d3f4328c0cf00b7ee7403b9c48e7a3357bab62aa9804e457e372de2b. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QZQAY2273962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750fa9e88433914de52ffe5f48d4e71439237b7f9aec54fdd19692b55c61e46f. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZQAY2218357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ed4c7f66a6cfc3972d92f1039cdd4a08b0f4c4aa7c1abe83bf95e6f306d6c0. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZQAY2266256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf85687fdb64055a86a8f3e87cbb2c882a8397bfe19335cdaf5f7c521f355b5d. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZQAY2277705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cca1a218d63979d29d2d6b304482190d139c259b10a41e38282f877e8f851a. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZQAY2296073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044ea711f1ae9ccb6d224551bd5d3f0fc702b9fa2b70c521aea89dda05b2943f. 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/QZQAY2280670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb547c45a7f5a0557c2f7de4d254b11e5d0dbd3e766aaecaf6e47fcf1c64dfbeb. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZQAY2242169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d4cf34d45539cc47ea3743fcf67ac2e8180a708d343ffad63912c13fe8014d. 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/QZQAY2251038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcad07a613b5e6808b469e7db2f37c2e5edc876d657f78c60a7242e405acb7f. 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/QZQAY2267376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd204ace7f5363c1b6cb1ececa33b4f6fb390f18441b4419e13aef8b612e8f373. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZQAY2292205.