Maria Hulthén Birkeland
type: MusicGroup
popularity: 11
followers: 758
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9c70d3e5cf80177aabf5180ab939fe9a01748d43b5d6eff58da948f9d8bd1c1c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953697
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953697
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/532ddd11-486c-4a44-b13d-eaabc073ee89.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/532ddd11-486c-4a44-b13d-eaabc073ee89.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/532ddd11-486c-4a44-b13d-eaabc073ee89
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T21:49:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9c70d3e5cf80177aabf5180ab939fe9a01748d43b5d6eff58da948f9d8bd1c1c","name":"Maria Hulthén Birkeland","registered_at":"2026-06-14T13:10:03Z","symbol":"NIM0462944","token_address":"0xda3e68d01800219abbf2d1394a61f3936777ca82","type":"artist","uuid":"532ddd11-486c-4a44-b13d-eaabc073ee89"}
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 0x9c70d3e5cf80177aabf5180ab939fe9a01748d43b5d6eff58da948f9d8bd1c1c. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/532ddd11-486c-4a44-b13d-eaabc073ee89.json and https://artists.proofprofile.net/proofs/artist/532ddd11-486c-4a44-b13d-eaabc073ee89.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T21:49:28Z
  text: {"copyright_id":"0x9c70d3e5cf80177aabf5180ab939fe9a01748d43b5d6eff58da948f9d8bd1c1c","name":"Maria Hulthén Birkeland","registered_at":"2026-06-14T13:10:03Z","symbol":"NIM0462944","token_address":"0xda3e68d01800219abbf2d1394a61f3936777ca82","type":"artist","uuid":"532ddd11-486c-4a44-b13d-eaabc073ee89"}
album: Vart än du går
  type: MusicAlbum
  date published: 2016-06-30
album: Vart än du går
  type: MusicAlbum
  date published: 2016-06-30
album: Din ljusa skugga
  type: MusicAlbum
  date published: 2019-01-01
album: Tupplur och Rävspel
  type: MusicAlbum
  date published: 2021-07-01
album: Tupplur och Rävspel
  type: MusicAlbum
  date published: 2021-07-01