Harmonic
type: MusicGroup
description: thumb|250px|The nodes of a vibrating string are harmonics. thumb|Two different notations of natural harmonics on the cello. First as sounded (more common), then as fingered (easier to sightread). In
popularity: 2
followers: 152
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-16T14:51:55Z
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2024-10-18
track: Nie ma się co gniewać
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  duration: PT2M56S
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  by artist: Harmonic
  in album: Śląska strefa przebojów vol.3
    type: MusicAlbum
    date published: 2018-03-30
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
  audio: Nie ma się co gniewać
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    additional property: Loudness (dB)
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    additional property: Key Name
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      value: C
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track: Mystic Game - Original Progressive Mix
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  by artist: Harmonic
  in album: Progressiva ! the Best of 90's Progressive Music
    type: MusicAlbum
    date published: 2013-01-07
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc08152ab9a51885ffa4376900bae69adc7e230a1f97356d9fb384a19164e804. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITA731101229.
    date published: 2026-07-08T03:20:19Z
  audio: Mystic Game - Original Progressive Mix
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Time Signature
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value: 5

Danceability
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value: 0.658

Energy
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value: 0.874

Speechiness
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value: 0.044

Acousticness
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value: 0.001

Instrumentalness
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value: 0.888

Liveness
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value: 0.091

Valence (Positivity)
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value: 0.694

Loudness (dB)
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value: -18.745

Key Name
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value: Bb

Mode Name
type: PropertyValue
value: Major