Northwestern Undertones
type: MusicGroup
description: The Northwestern Undertones are a 20-member co-ed collegiate a cappella group from Northwestern University in Evanston. Founded in 2001 by Jeni Noerenberg, the group was originally called Something Ol
popularity: 3
followers: 681
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd4c966695cab6bfbf77f857939ec375d404ce59215e877f327b0b6137335a9d8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953864
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953864
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/038673d4-b6b1-4ca3-8fef-c7edf51637b2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/038673d4-b6b1-4ca3-8fef-c7edf51637b2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/038673d4-b6b1-4ca3-8fef-c7edf51637b2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T00:30:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd4c966695cab6bfbf77f857939ec375d404ce59215e877f327b0b6137335a9d8","name":"Northwestern Undertones","registered_at":"2026-06-15T14:51:37Z","symbol":"NIM0742519","token_address":"0x086571f9aaeefb5a7a14bbfd45d137f8b189c61e","type":"artist","uuid":"038673d4-b6b1-4ca3-8fef-c7edf51637b2"}
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 0xd4c966695cab6bfbf77f857939ec375d404ce59215e877f327b0b6137335a9d8. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/038673d4-b6b1-4ca3-8fef-c7edf51637b2.json and https://artists.proofprofile.net/proofs/artist/038673d4-b6b1-4ca3-8fef-c7edf51637b2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0xd4c966695cab6bfbf77f857939ec375d404ce59215e877f327b0b6137335a9d8","name":"Northwestern Undertones","registered_at":"2026-06-15T14:51:37Z","symbol":"NIM0742519","token_address":"0x086571f9aaeefb5a7a14bbfd45d137f8b189c61e","type":"artist","uuid":"038673d4-b6b1-4ca3-8fef-c7edf51637b2"}
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