Eihwar
type: MusicGroup
genre: medieval
popularity: 36
followers: 23001
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcf92ac7cf1bcd6fdd7f34929f8e1fd5110df76a5c2460091662ef7ab90391a1a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8396c0e9-6c4e-44d3-89db-3180d903d8bb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8396c0e9-6c4e-44d3-89db-3180d903d8bb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8396c0e9-6c4e-44d3-89db-3180d903d8bb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
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 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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf92ac7cf1bcd6fdd7f34929f8e1fd5110df76a5c2460091662ef7ab90391a1a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8396c0e9-6c4e-44d3-89db-3180d903d8bb.json and https://artists.proofprofile.net/proofs/artist/8396c0e9-6c4e-44d3-89db-3180d903d8bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
album: The New Vikings
  type: MusicAlbum
  date published: 2023-12-04
album: Skjaldmö
  type: MusicAlbum
  date published: 2023-12-04
album: The Feast of Thor
  type: MusicAlbum
  date published: 2023-12-04
album: Berserkr
  type: MusicAlbum
  date published: 2023-12-04
album: Ragnar's Last Raid
  type: MusicAlbum
  date published: 2023-12-04
album: Valhalla
  type: MusicAlbum
  date published: 2023-12-04
album: Ragnarök
  type: MusicAlbum
  date published: 2023-12-04
album: Yggdrasil's Renewal
  type: MusicAlbum
  date published: 2023-12-04
album: Fenrir
  type: MusicAlbum
  date published: 2023-12-04
album: The Forge
  type: MusicAlbum
  date published: 2023-12-04
album: Völva's Chant
  type: MusicAlbum
  date published: 2024-06-17
album: Viking War Trance
  type: MusicAlbum
  date published: 2024-07-26
  track: Völva's Chant
    type: MusicRecording
    duration: PT4M5S
    duration ms: 245769
    explicit: false
    by artist: Eihwar
    in album: Viking War Trance
      type: MusicAlbum
      date published: 2024-07-26
    genre: medieval
    isrc code: FR33T2481203
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T03:27:31+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x4ab2a7f24a6c80eef59c54a8a2a17da5cb28826692c4beb8fde3b09499ba88ac
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956474
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956474
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR33T2481203
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T08:56:35Z
    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 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
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab2a7f24a6c80eef59c54a8a2a17da5cb28826692c4beb8fde3b09499ba88ac. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR33T2481203.
      date published: 2026-07-03T08:56:35Z
    audio: Völva's Chant
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 156.009
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.524
      additional property: Energy
        type: PropertyValue
        value: 0.601
      additional property: Speechiness
        type: PropertyValue
        value: 0.039
      additional property: Acousticness
        type: PropertyValue
        value: 0.024
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.823
      additional property: Liveness
        type: PropertyValue
        value: 0.162
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.463
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.463
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Berserkr (Viking War Trance Reforged)
  type: MusicAlbum
  date published: 2024-08-20
album: Viking War Trance
  type: MusicAlbum
  date published: 2024-09-20
album: Hugrheim
  type: MusicAlbum
  date published: 2025-09-24