Kern or KERN may refer to: People Kern (surname), includes a list of people with the name Kern (soldier), a light infantry unit in Medieval Irish armies Places Kern, Alaska, a ghost town in A
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 0xdf18c27b06f2d4e80f36f12742403b53ac185c25e60b742646ed4c38edd0b2ae. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49e2d6e3-c67f-47c4-9f55-b40803e3ef91.json and https://artists.proofprofile.net/proofs/artist/49e2d6e3-c67f-47c4-9f55-b40803e3ef91.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 0x7bab58d05b1d6bb3a4e2e07af02554016ff6d22954ea33af961cf8db1c9aecca. 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/CZA169100827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921dc0e1bffca716573b538c9bcb98c518ca6d6c97784b3981cab546f4ec2d5d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:34:24Z), 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/CZA169100828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb39edf4038d6ef0974e1b8eb839ff742fe3db91abf44dcd043b05bcc79c766. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/CZA169100829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2c46f90d842b3d6371b50bc511a73a512b0c149435f34f8a691a52014f59fe. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CZA169100832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64e7156390930437d5003a20a8b123a8db4558f5607a59142cf63d9218eafbe. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:39:18Z), 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/CZA169100833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65edd3060353e5e236f4fcf663acb1daff46318709ae3de84a8de43e2a67f2a. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/CZA169100835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0795536194ce6ee5c27f35b7af1c70780c2a84f95c52323238557da6ad2dec4d. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/CZA169100837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b7bb7b2de976dbb3b0fc798f78ec4c6e7ebe571e26c512513186f7aaa8009c. 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/CZA160405728.