Kerry Ray King (born June 3, 1964) is an American musician, best known for being the co-lead guitarist and songwriter of thrash metal band Slayer. He co-founded the band with Jeff Hanneman in 1981 and
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 0x779111073b6e2868b784e51c9e858dad70d4d8553b65875caed15352af7152cf. 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/030e54da-46e0-4a98-b6bd-7c03f5922dd9.json and https://artists.proofprofile.net/proofs/artist/030e54da-46e0-4a98-b6bd-7c03f5922dd9.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 0xe07c193170c617efa8398767e3da6ee8c756df6d05a97a92424a35d44ca9bd56. 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/QZYEH2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd6b77a227c6556ef256aaa064750c774f29472e9b2c01eaedf4bba1da8f0b3. 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/QZYEH2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391e055da4f6ed7478be44f6c7171b1c3f53e1d34d22406c82ba415f5974f70d. 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/QZYEH2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5d65103c8cb377fc7274d4dfa01b2af18bb1b13f568d14a0c3045fb23bf1a9. 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/QZYEH2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73119a589b0f9c609c70326ae59d3035bb2a0955c9254dbbd5ca2fa7f508d279. 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/QZYEH2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e171093597f55d09bd374e79c31c9503efcb4e69b62e757522a2f9e412dafbf. 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/QZYEH2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047e4fb79647c2777885d94f7f9f75dad60bcffb2c4795f1dd50e001101d5f32. 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/QZYEH2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3058837ef75736f09dead11c8e608a7f3a7b528b8ce2a5b4fdb65e09abc5a07c. 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/QZYEH2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75ad1f54a8ae1344f9d02adc42e8844ab9f705f0ce563883f5151337b6ad419. 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/QZYEH2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0d442fd7241086a7a5994f2a15935cb670984efadeae54639fec5241603ae2. 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/QZYEH2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d721604accf05a5f682997766fd1e1edc8a03c9edce9de0b989e010f619ad95. 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/QZYEH2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a91d82a2c96eb5e61e503fb871c958b6fede61cc66330b4cbd54ee252c149fa. 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/QZYEH2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8e1ea8b68daedb9cb26ea97de5ef8965081ad2a1806ffc0ecb8a5974d65367. 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/QZYEH2300024.