Theodora Cormontan
type: MusicGroup
description: thumb|Theodora Cormontan, about 1870|alt=Photograph of Theodora Cormontan at age 30 Theodora Cormontan (June 9, 1840October 26, 1922) was a Norwegian-American singer, church musician, pianist, music p
popularity: 5
followers: 24
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a488ff31-ff8a-41b2-b3bd-ba4afa21816a
additional property: OTSTimestamp
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  value: 2026-06-20T08:57:02Z
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828405e5388ee2371fe7f19b26e771bd2ca77a73936138068df436b86289b31c. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a488ff31-ff8a-41b2-b3bd-ba4afa21816a.json and https://artists.proofprofile.net/proofs/artist/a488ff31-ff8a-41b2-b3bd-ba4afa21816a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0x828405e5388ee2371fe7f19b26e771bd2ca77a73936138068df436b86289b31c","name":"Theodora Cormontan","registered_at":"2026-06-20T06:59:00Z","symbol":"NIM1547764","token_address":"0x79044d842fc0e93d9afeb1a5ccd8b75ebf399305","type":"artist","uuid":"a488ff31-ff8a-41b2-b3bd-ba4afa21816a"}
album: Fantasia Impromptu
  type: MusicAlbum
  date published: 2024-08-23
  track: Fantasia Impromptu
    type: MusicRecording
    duration: PT6M33S
    duration ms: 393493
    explicit: false
    by artist: Theodora Cormontan
    in album: Fantasia Impromptu
      type: MusicAlbum
      date published: 2024-08-23
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
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    additional property: OTSVerifyInstructions
      type: PropertyValue
      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
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe134c4fdd9ed8a5ab47ac6c97a94b824d9c97d4ad739311141a803432427cd48. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/NONZB2402070.
      date published: 2026-07-21T03:51:22Z
    audio: Fantasia Impromptu
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 71.258
      additional property: Musical Key
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        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
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      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
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      additional property: Energy
        type: PropertyValue
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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
        type: PropertyValue
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      additional property: Valence (Positivity)
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        value: 0.065
      additional property: Loudness (dB)
        type: PropertyValue
        value: -23.252
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Heart of the Mountain
  type: MusicAlbum
  date published: 2024-09-20
album: Dulgt Kjærlighet
  type: MusicAlbum
  date published: 2025-02-14
album: My Home. Moment musical op. 74 (studio recording)
  type: MusicAlbum
  date published: 2025-11-14