KNK may refer to: Kara no Kyōkai, a light novel series by Kinoko Nasu KNK (band), South Korea Library of Congress Classification KNK for Law of Brunei Northern Kentucky University Herbarium Kura
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 0xcbd7a23c63f1330170dcd393ebfa89d56039f68c3954ff8dd58e79d67df9364e. 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/6bedfa1d-1cdf-4bae-be98-a1825439eb91.json and https://artists.proofprofile.net/proofs/artist/6bedfa1d-1cdf-4bae-be98-a1825439eb91.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 0x964f7c00c6f448952e54e49078d265f75695cf153aa27fc733595998749d8265. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/KRA341610138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2724c3c8c514896c03997bf8e68690f4c990224587c7a9fdadf857114941bdf. 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/KRNAR1601318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b342389fdb944bd78bbdd3ed457af1a5f0c30466faaf09fcf7bfa8e2acd2808. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/KRNAR1601507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1741e402809682bdc9f7a03ab053ac7f813417b0c08393ed3265db44bb076804. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/KRNAR1601510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2948e9e0a5f08a1d9220e0f1389040fb3f31b56f8436919582f611438c66179. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/KRNAR1601511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b4bcabd39a4a73b391d62f31860129f46e51d14cc4a0bb09418a335e738cdd. 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/KRNAR1601512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c89cb6b93f45c41a6e55c95ed07e3c1fbf5ed7076bb3a5b3979f0d80644cbb. 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/KRNAR1604286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb205d1ed6f059813e28d8c17ca945dc402c03cc69da16c964df2cb5604e7124d. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/KRNAR1703287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d6c95d68c65f330d82f7e7a1f84d94177cb02a8d729456bb61c20050f5b935. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/KRNAR1807092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0096ef9473c118b031e1d8ef19fc6d3ed8f13bc0a88b13d2f5f69324ba40fef1. 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/KRA491900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02f3bed982b957ffc498ae215485cee0931307b53fa242422ea8e5c364b954b. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/KRA491900482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd150cecc44a34dd4ac4324ddab54159865cc1f113be4efc7b728a6f9d6b72cd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/KRB462000789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4945bb3c4903b957269d2c9bd427650fa9c522ec9d14de4fbb0905814b45c04. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/KRB462000790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc838cd12b34910463e4cb5ff9381e3c37ba220f0782c42a0f40d12b11c4857c5. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/KRB462000791.