Jack Kays (born December 15, 1998) is an American musician and singer-songwriter from Cincinnati, Ohio. Early life and education Jack grew up in Cincinnati, Ohio, and participated in theater and band
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 0x8a46e1e65096ab2d2812a78845f7f801f21ffc97435eee049e4176544418d212. 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/962def1e-889e-427b-bcaf-42469995df0a.json and https://artists.proofprofile.net/proofs/artist/962def1e-889e-427b-bcaf-42469995df0a.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 0xe56c45db35061956fd53cdd481c2467879caf51cb6753199a40d780c310e65ef. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM12108149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91844c333c26862f19ce01b3c9bc036bee229e2e4321782ca3c545cb29449363. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM12108146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03542833d3ad35b2408e38af372ef57e9d063950e79515b0d5c10cc4a0ca6804. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM12108147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68a314b182b544c9cdf7d7da5a7be63ea92de77132cd4fddfd84749121e8140. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM12108148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56c45db35061956fd53cdd481c2467879caf51cb6753199a40d780c310e65ef. 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/USSM12108149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149baeff48ecb939c663b3a6a47c120af442530a2949a98a742019cc337ecee3. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/USSM12305044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fda1b06ae4bcf842a336cb5bb3edae8bd6fa0a1ee8ace13373814cb7b9ebb11. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/USSM12405165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e7e7ac70b0dadd655fad585bd624d657477e24d702447a757e30c194f718e5. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/USSM12404833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8869a9040831a4abe65bca7e9639931765beba19cfce374066be324cbc2b38b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USSM12500975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18d948e25137bb45fa3fdf08f1c6aa463824b215e68bfc2d7be64b7e4b82273. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USSM12500973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf47e81571f1f47b1c177ebe70e64b202e6ccb5d93f55324d7ace5ac50228fad. 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/USSM12500974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980ee12ef5df5d814478f6202f7dacbf9808087d937c19e58b1c3e8f7dbf262a. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/USSM12500972.