Christer Karlberg
type: MusicGroup
genre: swedish ballads
popularity: 5
followers: 169
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x20d141d28ed9505f0febd5a1912783da60f81bf0a40af7155e73b5f878b84b2a
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/5561d7e2-64b7-4ca1-b146-8fae41603907.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5561d7e2-64b7-4ca1-b146-8fae41603907.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5561d7e2-64b7-4ca1-b146-8fae41603907
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x20d141d28ed9505f0febd5a1912783da60f81bf0a40af7155e73b5f878b84b2a","name":"Christer Karlberg","registered_at":"2026-06-16T19:26:16Z","symbol":"NIM1151747","token_address":"0x443e51c111b429f87de36e2c9b0930afcb2494d3","type":"artist","uuid":"5561d7e2-64b7-4ca1-b146-8fae41603907"}
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 0x20d141d28ed9505f0febd5a1912783da60f81bf0a40af7155e73b5f878b84b2a. 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/5561d7e2-64b7-4ca1-b146-8fae41603907.json and https://artists.proofprofile.net/proofs/artist/5561d7e2-64b7-4ca1-b146-8fae41603907.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x20d141d28ed9505f0febd5a1912783da60f81bf0a40af7155e73b5f878b84b2a","name":"Christer Karlberg","registered_at":"2026-06-16T19:26:16Z","symbol":"NIM1151747","token_address":"0x443e51c111b429f87de36e2c9b0930afcb2494d3","type":"artist","uuid":"5561d7e2-64b7-4ca1-b146-8fae41603907"}
album: Music For Flute & Guitar
  type: MusicAlbum
  date published: 2003-09-24
album: Music for Flute & Guitar
  type: MusicAlbum
  date published: 2003-09-24
album: Music for Flute & Guitar
  type: MusicAlbum
  date published: 2003-09-24
album: Karlberg, Christer: Guitar Flames
  type: MusicAlbum
  date published: 2010-10-01
album: Karlberg, Christer: Guitar Flames
  type: MusicAlbum
  date published: 2010-10-01
album: Plays Latin American Guitar Music
  type: MusicAlbum
  date published: 2017-11-24
album: Plays Latin American Guitar Music
  type: MusicAlbum
  date published: 2017-11-24