Kevin Blumenfeld
type: MusicGroup
description: Kevin Blumenfeld is an American composer best known for his ongoing work with director Charles Hood. Early life and career Blumenfeld was raised in Los Angeles. After finishing high school, he studie
popularity: 7
followers: 168
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
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additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/aacc6572-9cba-4bbb-bd58-00b5f4b64992.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/aacc6572-9cba-4bbb-bd58-00b5f4b64992
additional property: OTSTimestamp
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  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99543a69db6ff6b95d4addb7e46420e530dfe668f89a0c300b22eb2f66bf8e6c. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aacc6572-9cba-4bbb-bd58-00b5f4b64992.json and https://artists.proofprofile.net/proofs/artist/aacc6572-9cba-4bbb-bd58-00b5f4b64992.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
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album: Night Owls (Original Motion Picture Score)
  type: MusicAlbum
  date published: 2015-12-04
album: In the Vault: Season 1 (Original Television Score)
  type: MusicAlbum
  date published: 2017-10-03