Alex Karlsson
type: MusicGroup
description: Alexander Magnus Karlsson, known professionally as Alex Karlsson, is a Swedish songwriter, producer, and singer. He has worked on K-pop songs such as AleXa's "Bomb" (2019), BTS's "We Are Bulletproof:
popularity: 15
followers: 336
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x99451a87afa0c6ac73ac310cc6247a636e4ac0f27b2b23161c17c400431824c6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953741
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953741
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9e42562d-f9ea-464f-aacd-4a2e84133d17.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9e42562d-f9ea-464f-aacd-4a2e84133d17.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9e42562d-f9ea-464f-aacd-4a2e84133d17
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T04:44:49Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x99451a87afa0c6ac73ac310cc6247a636e4ac0f27b2b23161c17c400431824c6","name":"Alex Karlsson","registered_at":"2026-06-14T21:08:56Z","symbol":"NIM0577142","token_address":"0xb8843fde720d32994ce83f5a101332ae21395a98","type":"artist","uuid":"9e42562d-f9ea-464f-aacd-4a2e84133d17"}
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 0x99451a87afa0c6ac73ac310cc6247a636e4ac0f27b2b23161c17c400431824c6. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9e42562d-f9ea-464f-aacd-4a2e84133d17.json and https://artists.proofprofile.net/proofs/artist/9e42562d-f9ea-464f-aacd-4a2e84133d17.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T09:50:11Z
  text: {"copyright_id":"0x99451a87afa0c6ac73ac310cc6247a636e4ac0f27b2b23161c17c400431824c6","name":"Alex Karlsson","registered_at":"2026-06-14T21:08:56Z","symbol":"NIM0577142","token_address":"0xb8843fde720d32994ce83f5a101332ae21395a98","type":"artist","uuid":"9e42562d-f9ea-464f-aacd-4a2e84133d17"}
album: I Don't Wanna Change
  type: MusicAlbum
  date published: 2012-04-09
album: Stay The Night
  type: MusicAlbum
  date published: 2012-06-15
album: Streetlights
  type: MusicAlbum
  date published: 2015-01-05
album: Where Are U Ziggy - Single
  type: MusicAlbum
  date published: 2016-01-11