Kusk is surname literally meaning "coachman" in the Danish, Swedish, and Norwegian languages. Notable people with the surname include: Kasper Kusk (born 1991), Danish footballer Søren Kusk (born 1960
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 0x0cb85c1d67cd38724bb7ae6a57802a4af44d1caa9fb8c710c84de66cca3b6e39. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6c2bc01-a057-4084-a8f4-759dbbf9c2af.json and https://artists.proofprofile.net/proofs/artist/f6c2bc01-a057-4084-a8f4-759dbbf9c2af.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 0xe5a68a9e2c07ee489a2276f25902d20eb206643b77440d315ecc8bc5290b110c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:49:43Z), 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/ISV982537901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc000fd6aca712998e6835b9c7a12c693da353c51620102d366bd83f7e5e77c9f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:31:29Z), 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/ISV442526401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a68a9e2c07ee489a2276f25902d20eb206643b77440d315ecc8bc5290b110c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ISV982537901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcbcf8ffadeed299d14c2ce39e28a9e99aa2c155764d7fa590a96c2ddd94448. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ISV442526501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d6b8c3912d48a23bcb6bb6dc67c74b70d49b91a45542688dd8476eb4b9e2ed. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/ISV982557801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014ce4a66dc73eca856d3ba7953fcdd76897620a8fa65c807201f8474a56433f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ISV442526601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225136c99b2011ac71bf8a89b80ca2f2f3945591d3324ef03c6d0d22e62b3a10. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ISV442526701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181af3c39d94f78e16f857fe5264414db53d3cdba15cac9a43283464b1f12c22. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ISV442526801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b41384d12fc5fbbc1d7acba2eb0601d13bb3f46771bf4b5772865148f6a8ab. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/ISV442527001.