Kenneth W. Jennings III (born May 23, 1974) is an American game show host and author who has hosted the syndicated quiz show Jeopardy! since 2021. He is best known for his success and streak as a cont
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 0x01f545f6991d8a81fd880a50d100623a95614e1f1f29ade30fa30c88e53ed22d. 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/f8070259-467a-468c-8d41-51eabbb92bfd.json and https://artists.proofprofile.net/proofs/artist/f8070259-467a-468c-8d41-51eabbb92bfd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Urinetown The Musical (Original Broadway Cast Recording)
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 0x0537a951269b162ac6c3cdc67929b5136e250b4e74acde347b53a36d5da3004b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USBC10100406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8f825db08353ea778209f7a02b3a09515cdab6fe06faf816db9ac2a107f63b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USBC10100405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56493f5a183be2574315ad3de196318141c76cdd031eecfce65b1980fe851c16. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USBC10100401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c0cd3ebb588ca23b4f700ee571b1ceaee8a5493be0b53c77b89357a1c3b882. 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/USBC10100408.
Original Broadway Cast of Sweeney Todd: The Demon Barber of Fleet Street
Sweeney Todd: The Demon Barber of Fleet Street (Original Broadway Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9d5558c950b86fe01117711b92adf9b50dfd6849244dd7f7db85295d8dfa35. 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/USBC10500365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe2fc823bf259722416f5e28524858bd85e96aae1f2ab30fc2a2b5fbda2d54e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USBC10500374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b6bc17d28989ae0b8232ba02cf4ea92df0e392ca387cbfed7afc928dcc8c2d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USBC10500381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e22ab0ef89df34d4167d207ec36cb12b9a65e0b2a862d5686fd75a9eb680b4. 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/USBC10500384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0537a951269b162ac6c3cdc67929b5136e250b4e74acde347b53a36d5da3004b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USBC10100406.
A Christmas Carol (Original Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbd88fb16c9643bb79fb8019d2ad1b3476af0fe303a55d6f7aef6ccc4eb2e00. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USSM19500457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf7ea854f889c584e6742dbdeb200f038ee08926d931701da4901a77d2c8637. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USSM19500459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2e472b2cd227bb47c2398ddba6a34f42254de7e96ece7bde7a18280f3b509b. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USSM19500460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c4be738311c5e000b410055fbf16e03a2dd3a4b8d5c0013ce352c95ee20944. 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/USSM19500462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568cc2a60f65c6d1383a68fbe918ff88306ef49a56debb8d31a51441f1cbec8d. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USSM19500467.