Derek King (born February 11, 1967) is a Canadian former professional ice hockey left winger and current head coach for the Hershey Bears of the American Hockey League. He most recently served as an
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 0x23238029ec7a9ef0f7856e98dcc2ad31935439477fb2773a1483707c4a8a0d6f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2265d509-6334-4a5c-bd0a-ceaecb060e10.json and https://artists.proofprofile.net/proofs/artist/2265d509-6334-4a5c-bd0a-ceaecb060e10.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 0x9d7b9917270dbc7cc240b2126a5cc474e13304c540fa605276983bedbf893aba. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFZ2239747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3151e11a0dc2969aea5ff5619864667b4673435f39c5b57f219d0b95a4964e7d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM24S2107295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672c46184544031519285d03a122651470b3b19eaed8cac133069928b90d0264. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAGO2213178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b5f24ff6807674f0baabf7fc80e80e0b002bfd01a96752e38e528168521cec. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAFZ2294406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd481269c503b738eb946fb5dcfe6375358f7ba89dba424620a0661e0e51d958. 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/USUM71512727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2e854eac1aebc2ed918c05b6f614031fac89bafab71a482e9c6cd24e973395. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZES81879603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b0079efa5ab8064d4fa43895b9cd1b26b45b269b997a27dc3b11e017d86232. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USUYG1304909.
Ruthless (Nice Guys Always Finish Last) (feat. Sage the Gemini & Derek King) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec5a2ca45e15bd252cebb9f38e77967156cff070386e83c73d9823d3535a7cb. 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/USUYG1253777.
Ruthless (Nice Guys Always Finish Last) (feat. Sage The Gemini & Derek King) - Remix
Ruthless (Nice Guys Always Finish Last) [Remix] [feat. Sage The Gemini & Derek King]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec5a2ca45e15bd252cebb9f38e77967156cff070386e83c73d9823d3535a7cb. 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/USUYG1253777.
Not Regular (feat. Derek King, Larry June, Haiti Babii & Yhung T.O.) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe15e32a4d4610b7e5e5fb366380a23330dc1904c25e74e9b5b73af1a8686a3. 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/USUYG1306011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17612cb857e3487c1552bb05fd13cd4dee5a9db97d72dfdd9a512068abffdb13. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USUYG1304673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7449ea63547813c86bf1c839c8dd39ecbe335283280d934e663625478a749a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEWD12300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa683636a9996be87b482413a5239b86fa0beb0e02628334224455f03d79b9bb4. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/USUYG1357576.
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 0x3ce6b560f6b891c0dd9b6e94f3b443fe25b0929923619cebac1c0bfc731bafdd. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/USUYG1302201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf557e2f93f13c0267761c34a84b8f3494f794935bac1528962c02c5daa66112a. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZFZ22316851.
Chauffeur (feat. Derek King & Kool John)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58498611aec4c52b785435f108ee1906b23657ff7cca3e3d136e46a5e7490cc. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USLD91719707.