Gordon Mumma
type: MusicGroup
genre: avant-garde
genre: experimental
genre: minimalism
description: Gordon Mumma (born March 30, 1935, in Framingham, Massachusetts) is an American composer. He is known most for his work with electronics, many devices of which he builds himself, and for his performan
popularity: 2
followers: 1170
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x76e348f6a045f30247e1fbcc194c6f512e8dbcbf73ce86d7cd532ce859d39fd0
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
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  value: https://artists.proofprofile.net/proofs/artist/704ec0ef-9b11-4c10-b840-c51dc7b92d8a.ots
additional property: OTSRecordURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/704ec0ef-9b11-4c10-b840-c51dc7b92d8a
additional property: OTSTimestamp
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  value: 2026-06-17T08:11:48Z
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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e348f6a045f30247e1fbcc194c6f512e8dbcbf73ce86d7cd532ce859d39fd0. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/704ec0ef-9b11-4c10-b840-c51dc7b92d8a.json and https://artists.proofprofile.net/proofs/artist/704ec0ef-9b11-4c10-b840-c51dc7b92d8a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
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album: Music for Merce, Vol. 2
  type: MusicAlbum
  date published: 2010-12-01
album: Gordon Mumma: Music for Solo Piano (1960-2001)
  type: MusicAlbum
  date published: 2008-01-01
album: Music of David Tudor And Gordon Mumma
  type: MusicAlbum
  date published: 2006-01-01
album: Gordon Mumma: Electronic Music Of Theater And Public Activity
  type: MusicAlbum
  date published: 2005-01-01
album: Live - Electronic Music
  type: MusicAlbum
  date published: 2002-01-22