Jack and Eliza
type: MusicGroup
description: Jack and Eliza (also called Jack + Eliza) is an alternative rock band formed in New York City in 2012, consisting of childhood friends Eliza Callahan and Jack Staffen. Callahan and Staffen both starte
popularity: 18
followers: 11893
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411c676c255cc762389195e68274ea15e52709e6c943602293b0f63b7e9a93bc. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e67096e2-dd7f-4d98-ab0d-c9d5fd3ce597.json and https://artists.proofprofile.net/proofs/artist/e67096e2-dd7f-4d98-ab0d-c9d5fd3ce597.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T22:22:30Z
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album: Hold The Line
  type: MusicAlbum
  date published: 2014-05-27
album: Secrets
  type: MusicAlbum
  date published: 2014-07-18
album: No Wonders
  type: MusicAlbum
  date published: 2014-09-19
album: No Wonders
  type: MusicAlbum
  date published: 2014-09-19
album: Diamonds
  type: MusicAlbum
  date published: 2015-02-27
album: Oh No
  type: MusicAlbum
  date published: 2015-04-28
album: Quarter Past The Hour
  type: MusicAlbum
  date published: 2015-06-30
album: Gentle Warnings
  type: MusicAlbum
  date published: 2015-08-07
album: Gentle Warnings
  type: MusicAlbum
  date published: 2015-08-07
  track: Oh No
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    by artist: Jack and Eliza
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      type: MusicAlbum
      date published: 2015-08-07
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-11T12:18:39Z
    audio: Oh No
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      additional property: Loudness (dB)
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  track: Secrets
    type: MusicRecording
    duration: PT3M22S
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    explicit: false
    by artist: Jack and Eliza
    in album: Gentle Warnings
      type: MusicAlbum
      date published: 2015-08-07
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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
    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-18T13:15:29Z
    audio: Secrets
      type: AudioObject
      additional property: Tempo (BPM)
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        value: 112.316
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      additional property: Time Signature
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album: One Too Far (Shy Girls Remix)

Time Signature
type: PropertyValue
value: 4

Danceability
type: PropertyValue
value: 0.549

Energy
type: PropertyValue
value: 0.477

Speechiness
type: PropertyValue
value: 0.03

Acousticness
type: PropertyValue
value: 0.789

Instrumentalness
type: PropertyValue
value: 0.003

Liveness
type: PropertyValue
value: 0.094

Valence (Positivity)
type: PropertyValue
value: 0.403

Loudness (dB)
type: PropertyValue
value: -6.018

Key Name
type: PropertyValue
value: B

Mode Name
type: PropertyValue
value: Major

One Too Far (Shy Girls Remix)
type: MusicAlbum
date published: 2015-10-30

One Too Far (Shy Girls Remix)
type: MusicAlbum
date published: 2015-10-30