Derek Campbell
type: MusicGroup
description: Derek Campbell (born April 14, 1980) is a former Canadian professional ice hockey player. Career Born in Nepean, Ontario, Campbell began his career playing for the junior OHL team, the Belleville B
popularity: 21
followers: 53
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  value: 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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-12T19:28:13Z
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track: Blest Are They

Blest Are They
type: MusicRecording
duration: PT4M57S
duration ms: 297706
explicit: false
by artist: David Haas
by artist: Kate Cuddy
by artist: Lori True
by artist: Derek Campbell
in album: Rejoice and Be Glad: (Y)Ours Is the Kingdom of God
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  date published: 2019-05-03
isrc code: US7851900053
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  value: 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
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58468378e4aad1925ed1b4d6ac2b6a6c8467027c218c8037ef4bdc85fed45fb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US7851900053.
  date published: 2026-06-13T17:25:41Z
audio: Blest Are They
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