Gravvård
type: MusicGroup
genre: black metal
popularity: 9
followers: 559
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2fe483a3c65f16c03f20f98e2e73131acc52418493715ceeee5187a0579afd76
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ec62f502-242d-46a0-9e64-39b64d4f08f4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ec62f502-242d-46a0-9e64-39b64d4f08f4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ec62f502-242d-46a0-9e64-39b64d4f08f4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2fe483a3c65f16c03f20f98e2e73131acc52418493715ceeee5187a0579afd76","name":"Gravvård","registered_at":"2026-06-21T11:10:47Z","symbol":"NIM1908589","token_address":"0x6701df6aab21681b6d4668f5376bc65527926653","type":"artist","uuid":"ec62f502-242d-46a0-9e64-39b64d4f08f4"}
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 0x2fe483a3c65f16c03f20f98e2e73131acc52418493715ceeee5187a0579afd76. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec62f502-242d-46a0-9e64-39b64d4f08f4.json and https://artists.proofprofile.net/proofs/artist/ec62f502-242d-46a0-9e64-39b64d4f08f4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0x2fe483a3c65f16c03f20f98e2e73131acc52418493715ceeee5187a0579afd76","name":"Gravvård","registered_at":"2026-06-21T11:10:47Z","symbol":"NIM1908589","token_address":"0x6701df6aab21681b6d4668f5376bc65527926653","type":"artist","uuid":"ec62f502-242d-46a0-9e64-39b64d4f08f4"}
album: Minnesord
  type: MusicAlbum
  date published: 2024-11-08
  track: Nådens År
    type: MusicRecording
    duration: PT7M6S
    duration ms: 426535
    explicit: false
    by artist: Gravvård
    in album: Minnesord
      type: MusicAlbum
      date published: 2024-11-08
    genre: black metal
    isrc code: USL4R2473495
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T10:06:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x42793d5b7fe629a31a0ecbdbb31c1296415fb3ab155b8a94f6cfa5c04b160b46
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958716
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958716
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R2473495
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T10:15:55Z
    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 0x42793d5b7fe629a31a0ecbdbb31c1296415fb3ab155b8a94f6cfa5c04b160b46. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USL4R2473495.
      date published: 2026-07-19T10:15:55Z
    audio: Nådens År
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 138.258
      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: 0.155
      additional property: Energy
        type: PropertyValue
        value: 0.688
      additional property: Speechiness
        type: PropertyValue
        value: 0.111
      additional property: Acousticness
        type: PropertyValue
        value: 0.044
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.203
      additional property: Liveness
        type: PropertyValue
        value: 0.392
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.145
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.419
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major