Mariam Matossian
type: MusicGroup
description: Mariam Matossian (born in Vancouver, British Columbia, Canada) is a musician specialising in Armenian folk music. Early life and education Her Armenian parents spoke their native language in their ho
popularity: 11
followers: 3566
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca8df2e5034f8e018d9ad31f37b567c893be82e5cd469bcd47eea0b5a1062ab. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73d0fad1-74d6-4b21-84ce-e2957a600c13.json and https://artists.proofprofile.net/proofs/artist/73d0fad1-74d6-4b21-84ce-e2957a600c13.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T22:00:24Z
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album: Far From Home
  type: MusicAlbum
  date published: 2004-06-07
  track: Oror - Lullaby
    type: MusicRecording
    duration: PT4M14S
    duration ms: 254346
    explicit: false
    by artist: Mariam Matossian
    in album: Far From Home
      type: MusicAlbum
      date published: 2004-06-07
    isrc code: USHM80429704
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    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a15b13079ea078d815a854e666ba0ce35c6f185445ea36d08f0b4e51785cd2f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USHM80429704.
      date published: 2026-07-21T00:27:37Z
    audio: Oror - Lullaby
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 97.967
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
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        value: 3
      additional property: Danceability
        type: PropertyValue
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      additional property: Energy
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      additional property: Speechiness
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      additional property: Acousticness
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      additional property: Instrumentalness
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      additional property: Liveness
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        value: 0.078
      additional property: Valence (Positivity)
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        value: 0.113
      additional property: Loudness (dB)
        type: PropertyValue
        value: -14.232
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
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album: In the Light
  type: MusicAlbum
  date published: 2007-01-01
  track: Dle Yaman
    type: MusicRecording
    duration: PT5M29S
    duration ms: 329786
    explicit: false
    by artist: Mariam Matossian
    in album: In the Light
      type: MusicAlbum
      date published: 2007-01-01
    isrc code: USCGH1809134
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    additional property: OTSVerifyInstructions
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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
      type: DigitalDocument
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      date published: 2026-07-18T19:27:02Z
    audio: Dle Yaman
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 130.978
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
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        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
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        value: 0.316
      additional property: Energy
        type: PropertyValue
        value: 0.042
      additional property: Speechiness
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        value: 0.041
      additional property: Acousticness
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        value: 0.994
      additional property: Instrumentalness
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        value: 0
      additional property: Liveness
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        value: 0.093
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Valence (Positivity)
type: PropertyValue
value: 0.399

Loudness (dB)
type: PropertyValue
value: -16.234

Key Name
type: PropertyValue
value: A

Mode Name
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value: Major

In the Light
type: MusicAlbum
date published: 2007-09-01