Ulf Bandgren
type: MusicGroup
popularity: 2
followers: 71
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5f85b45a3826fe9990078231966562df59afac8f28c2496c376ddb21537ca992
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/54d3b6c2-3df8-4855-8704-cc3052781d78.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/54d3b6c2-3df8-4855-8704-cc3052781d78.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/54d3b6c2-3df8-4855-8704-cc3052781d78
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5f85b45a3826fe9990078231966562df59afac8f28c2496c376ddb21537ca992","name":"Ulf Bandgren","registered_at":"2026-06-16T19:05:19Z","symbol":"NIM1146757","token_address":"0x98ea0bd0c8489a29a511a8bf867646c5cd173f40","type":"artist","uuid":"54d3b6c2-3df8-4855-8704-cc3052781d78"}
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 0x5f85b45a3826fe9990078231966562df59afac8f28c2496c376ddb21537ca992. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54d3b6c2-3df8-4855-8704-cc3052781d78.json and https://artists.proofprofile.net/proofs/artist/54d3b6c2-3df8-4855-8704-cc3052781d78.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x5f85b45a3826fe9990078231966562df59afac8f28c2496c376ddb21537ca992","name":"Ulf Bandgren","registered_at":"2026-06-16T19:05:19Z","symbol":"NIM1146757","token_address":"0x98ea0bd0c8489a29a511a8bf867646c5cd173f40","type":"artist","uuid":"54d3b6c2-3df8-4855-8704-cc3052781d78"}
album: Nordic Sketches
  type: MusicAlbum
  date published: 2001
album: Nordic Sketches
  type: MusicAlbum
  date published: 2001-09-13
album: Polka Dots and Moonbeams
  type: MusicAlbum
  date published: 2024-12-14