Maks is a settlement in the administrative district of Gmina Chmielno, within Kartuzy County, Pomeranian Voivodeship, in northern Poland. References Category:Villages in Kartuzy 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 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 0x57b256de1bdd74b0fa4acf2d8cd121e3e498f2e6c1bcee6512b3fc8d1569edc4. 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/86d8e22a-812e-4c7d-8334-b4bde01dbfcd.json and https://artists.proofprofile.net/proofs/artist/86d8e22a-812e-4c7d-8334-b4bde01dbfcd.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 0xfc59b28e863b20c66a631c9f2c139fed63d526786369e69bfac429b5118e3671. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZK6Q2139404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d6ab933174b3f5428e439dde91729323376aeabddf0e32ad67bb67c2835c12. 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/QZES92264153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3eceef5fd5552265b3237d2baeb00050a4bd9a78705160e74575a5f6a56f4a9. 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/QZTB52290570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93b562158808f6e1ca3b63f5e31dda1f705e7f1a78d642157433f7079239972. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZFZ42346509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e55f926aaeac2d428d1895e67bda5ec706211491e14fbc5c0a96524a1b2a258. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHNB2338925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810548950c046c2a78f0b031a39a347a620a8d4fb69e37973b34b8447fa31b17. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/QZHNB2338927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f2fec189ffb2067324a3e6b98d97b0db761b228f1ace7f303c29b915c55faa. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZHNB2338928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e105fc9fb1b517fbcfcf07c527fb233775c92aec3ff4fdc323dfcacb3004a0. 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/QZHNB2338930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa433504d33843ee49838a6f642ee2ecd49cb8db55414b85969979ae84d052238. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/QZHNB2338931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800fbe5bcdf6f3f86e2c93f2baa8bd78480729c763c626b480c4bd74997a13f8. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZHNB2338932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ce7f2869a898d5ae980be9dfe5780b4c1f73caa8dfcc33715c3cfbf3136e95. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZHN32361484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccd45650bb13f87d5586366aac335a33262fd493aef08cd91773a60e4862ddb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWT2343796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90225c0663ca233b00d84d8855bcee8b9872afb5e0ae5331d9a5325817500e37. Chain 2 (Bitcoin): anchored in block 957668 (2026-07-12T06:54:37Z), 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/QZFZ32400196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df1dfb0496b036d22791da2cbde1de9b113b7e6375ea9093882ba7098d4868c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZK6J2497436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd383ac7f1306abf0f91e4bfdedc031036908ef54e2d38d0c81b555cb8e4ce7. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/FRPZ92423080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c3a854e369ea929ef2f4441d0f1ce6954f53791175f1706d9ef41a5e434cb6. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FRPZ92423110.