Mattias Hellberg
type: MusicGroup
description: Mattias Hellberg (born 13 June 1973) is a Swedish musician. Hellberg has worked with a variety of Swedish bands and artists in different genres, both as a permanent member and as guest or session memb
popularity: 10
followers: 1762
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x57bdd3add62c4e84858d21a2af9b8747289797b70b7c20b41424b2a7203af8b4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954043
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954043
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4028deb3-4031-49cf-b957-49f2c44000a5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4028deb3-4031-49cf-b957-49f2c44000a5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4028deb3-4031-49cf-b957-49f2c44000a5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T04:15:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x57bdd3add62c4e84858d21a2af9b8747289797b70b7c20b41424b2a7203af8b4","name":"Mattias Hellberg","registered_at":"2026-06-16T11:54:41Z","symbol":"NIM1044017","token_address":"0xebf1e167020772fa0c5aa7c1cb09206293514794","type":"artist","uuid":"4028deb3-4031-49cf-b957-49f2c44000a5"}
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 0x57bdd3add62c4e84858d21a2af9b8747289797b70b7c20b41424b2a7203af8b4. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4028deb3-4031-49cf-b957-49f2c44000a5.json and https://artists.proofprofile.net/proofs/artist/4028deb3-4031-49cf-b957-49f2c44000a5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T04:15:20Z
  text: {"copyright_id":"0x57bdd3add62c4e84858d21a2af9b8747289797b70b7c20b41424b2a7203af8b4","name":"Mattias Hellberg","registered_at":"2026-06-16T11:54:41Z","symbol":"NIM1044017","token_address":"0xebf1e167020772fa0c5aa7c1cb09206293514794","type":"artist","uuid":"4028deb3-4031-49cf-b957-49f2c44000a5"}
album: Mattias Hellberg
  type: MusicAlbum
  date published: 2003
album: Mattias Hellberg
  type: MusicAlbum
  date published: 2003
album: Mattias Hellberg
  type: MusicAlbum
  date published: 2003
album: Mattias Hellberg
  type: MusicAlbum
  date published: 2003
album: Mattias Hellberg
  type: MusicAlbum
  date published: 2003-07-01
album: Mattias Hellberg
  type: MusicAlbum
  date published: 2004-02-24
album: Mattias Hellberg
  type: MusicAlbum
  date published: 2004-03-11
album: Out of the Frying Pan, Into the Woods
  type: MusicAlbum
  date published: 2008-11-10
album: Kolla Kolla
  type: MusicAlbum
  date published: 2011-05-25
album: High in the Lowlands
  type: MusicAlbum
  date published: 2011-06-17
album: High in the Lowlands
  type: MusicAlbum
  date published: 2011-08-19
album: High in the Lowlands
  type: MusicAlbum
  date published: 2011-11-03
album: High in the Lowlands
  type: MusicAlbum
  date published: 2011-11-03
album: High in the Lowlands
  type: MusicAlbum
  date published: 2012
album: High in the Lowlands
  type: MusicAlbum
  date published: 2012
album: High In The Lowlands
  type: MusicAlbum
  date published: 2012-05-29
album: High In The Lowlands
  type: MusicAlbum
  date published: 2012-05-29
album: High In The Lowlands
  type: MusicAlbum
  date published: 2012-05-29
album: Coffee & Croissant
  type: MusicAlbum
  date published: 2013-03-12
album: Coffee & Croissant
  type: MusicAlbum
  date published: 2013-03-12
album: Wait for the Morning
  type: MusicAlbum
  date published: 2013-07-24
album: Gurimolla!
  type: MusicAlbum
  date published: 2013-09-25
album: Gurimolla!
  type: MusicAlbum
  date published: 2013-09-25
album: Gurimolla!
  type: MusicAlbum
  date published: 2013-09-25
album: Crazy
  type: MusicAlbum
  date published: 2014-02-07
album: Crazy
  type: MusicAlbum
  date published: 2014-02-07
album: Bye Bye Johnny
  type: MusicAlbum
  date published: 2014-09-03
album: Bye Bye Johnny
  type: MusicAlbum
  date published: 2014-09-03
album: In Egolectric Harmony
  type: MusicAlbum
  date published: 2014-10-15
album: In Egolectric Harmony
  type: MusicAlbum
  date published: 2014-11-12
album: In Egolectric Harmony
  type: MusicAlbum
  date published: 2015-02-18