Mihka Helander
type: MusicGroup
popularity: 2
followers: 108
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd49e08fd6ce512a19d74bdbe48b34ee60ef7bf6add1455abc0248f9935cb7b1c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b32a9f8c-d441-4d3a-bea8-2ea3a510c21b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b32a9f8c-d441-4d3a-bea8-2ea3a510c21b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b32a9f8c-d441-4d3a-bea8-2ea3a510c21b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd49e08fd6ce512a19d74bdbe48b34ee60ef7bf6add1455abc0248f9935cb7b1c","name":"Mihka Helander","registered_at":"2026-06-20T13:55:52Z","symbol":"NIM1624926","token_address":"0xfd0badf3b743451143c5bdbad53458f517b42c87","type":"artist","uuid":"b32a9f8c-d441-4d3a-bea8-2ea3a510c21b"}
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 0xd49e08fd6ce512a19d74bdbe48b34ee60ef7bf6add1455abc0248f9935cb7b1c. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b32a9f8c-d441-4d3a-bea8-2ea3a510c21b.json and https://artists.proofprofile.net/proofs/artist/b32a9f8c-d441-4d3a-bea8-2ea3a510c21b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xd49e08fd6ce512a19d74bdbe48b34ee60ef7bf6add1455abc0248f9935cb7b1c","name":"Mihka Helander","registered_at":"2026-06-20T13:55:52Z","symbol":"NIM1624926","token_address":"0xfd0badf3b743451143c5bdbad53458f517b42c87","type":"artist","uuid":"b32a9f8c-d441-4d3a-bea8-2ea3a510c21b"}
album: Ále guođe mu
  type: MusicAlbum
  date published: 2023-03-10
  track: Ále guođe mu
    type: MusicRecording
    duration: PT3M41S
    duration ms: 221320
    explicit: false
    by artist: Mihka Helander
    in album: Ále guođe mu
      type: MusicAlbum
      date published: 2023-03-10
    isrc code: NOGJD2302080
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T19:38:15+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5e1828d44798e52a76f460be33d3c74e02f2c3ebf0a3fdcdb37a193766c42736
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956856
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956856
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOGJD2302080
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:25:57Z
    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 0x5e1828d44798e52a76f460be33d3c74e02f2c3ebf0a3fdcdb37a193766c42736. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NOGJD2302080.
      date published: 2026-07-06T01:25:57Z
    audio: Ále guođe mu
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 75.036
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.445
      additional property: Energy
        type: PropertyValue
        value: 0.328
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.851
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.026
      additional property: Liveness
        type: PropertyValue
        value: 0.081
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.231
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.503
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Summertime
  type: MusicAlbum
  date published: 2025-05-23
album: Am I Welcome
  type: MusicAlbum
  date published: 2025-09-05