Sindre Kvalheim
type: MusicGroup
genre: album rock
genre: arena rock
popularity: 5
followers: 209
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3feba83265a8242b64e3117dc2f0b4d9eb04977dc4ee6ced1797da354648b075
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/991d5e79-f967-4a1a-953e-57e192af4dc5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/991d5e79-f967-4a1a-953e-57e192af4dc5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/991d5e79-f967-4a1a-953e-57e192af4dc5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3feba83265a8242b64e3117dc2f0b4d9eb04977dc4ee6ced1797da354648b075","name":"Sindre Kvalheim","registered_at":"2026-06-17T19:07:21Z","symbol":"NIM1490709","token_address":"0xac4380627a6eeb1bbcabde1aae432591d4f61afb","type":"artist","uuid":"991d5e79-f967-4a1a-953e-57e192af4dc5"}
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 0x3feba83265a8242b64e3117dc2f0b4d9eb04977dc4ee6ced1797da354648b075. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/991d5e79-f967-4a1a-953e-57e192af4dc5.json and https://artists.proofprofile.net/proofs/artist/991d5e79-f967-4a1a-953e-57e192af4dc5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x3feba83265a8242b64e3117dc2f0b4d9eb04977dc4ee6ced1797da354648b075","name":"Sindre Kvalheim","registered_at":"2026-06-17T19:07:21Z","symbol":"NIM1490709","token_address":"0xac4380627a6eeb1bbcabde1aae432591d4f61afb","type":"artist","uuid":"991d5e79-f967-4a1a-953e-57e192af4dc5"}
album: Searching
  type: MusicAlbum
  date published: 2022-05-04
album: Lights
  type: MusicAlbum
  date published: 2022-05-11
album: Back to 90`s
  type: MusicAlbum
  date published: 2022-05-20
album: On My Way
  type: MusicAlbum
  date published: 2022-06-16
album: North
  type: MusicAlbum
  date published: 2022-07-05
album: Searching
  type: MusicAlbum
  date published: 2022-07-08
album: North (Instrumental Version)
  type: MusicAlbum
  date published: 2022-12-02
album: Life
  type: MusicAlbum
  date published: 2022-12-30
album: Searching - The Album & Live at Maritim Park
  type: MusicAlbum
  date published: 2023-01-27
album: Hourglass
  type: MusicAlbum
  date published: 2024-06-28
album: Love-Fi
  type: MusicAlbum
  date published: 2025-09-26