Kalle Mattson
type: MusicGroup
description: Kalle Mattson (born Kalle Mattson Wainio, September 21, 1990, in Sault Ste. Marie, Ontario) is a Canadian singer-songwriter based in Ottawa, Ontario. He has performed both as a solo artist and with hi
popularity: 10
followers: 3411
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x0aedd0a08188a82e29ec0f382674bca40a8ef80d25a39a1ce2ae4b66104ed698
additional property: OTSHash
additional property: OTSBitcoinBlock
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  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/55c6ea9d-01d9-4816-8333-28e77e70812d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/55c6ea9d-01d9-4816-8333-28e77e70812d.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/55c6ea9d-01d9-4816-8333-28e77e70812d
additional property: OTSTimestamp
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  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aedd0a08188a82e29ec0f382674bca40a8ef80d25a39a1ce2ae4b66104ed698. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55c6ea9d-01d9-4816-8333-28e77e70812d.json and https://artists.proofprofile.net/proofs/artist/55c6ea9d-01d9-4816-8333-28e77e70812d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
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album: Whisper Bee
  type: MusicAlbum
  date published: 2009-05-13
album: Anchors
  type: MusicAlbum
  date published: 2011-04-13
album: Lives in Between
  type: MusicAlbum
  date published: 2012-05-01
album: Seven Songs
  type: MusicAlbum
  date published: 2013-11-22
album: Seven Songs
  type: MusicAlbum
  date published: 2013-11-22
album: Someday, the Moon Will Be Gold
  type: MusicAlbum
  date published: 2014-02-10
album: Someday, the Moon Will Be Gold
  type: MusicAlbum
  date published: 2014-03-07
album: Someday, the Moon Will Be Gold
  type: MusicAlbum
  date published: 2014-03-07
album: Avalanche
  type: MusicAlbum
  date published: 2015-07-24
album: Avalanche
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  date published: 2015-08-21
album: Avalanche
  type: MusicAlbum
  date published: 2015-08-21
album: Avalanche
  type: MusicAlbum
  date published: 2015-08-28
album: Avalanche
  type: MusicAlbum
  date published: 2015-10-02
album: Avalanche
  type: MusicAlbum
  date published: 2015-10-02
album: Hotline Bling
  type: MusicAlbum
  date published: 2015-11-06
album: Hotline Bling
  type: MusicAlbum
  date published: 2015-11-06
album: Hotline Bling
  type: MusicAlbum
  date published: 2015-11-13
album: Broken in Two
  type: MusicAlbum
  date published: 2018-03-30
album: Kids on the Run
  type: MusicAlbum
  date published: 2018-06-01
album: Better Now
  type: MusicAlbum
  date published: 2018-07-06
album: Youth.
  type: MusicAlbum
  date published: 2018-09-07
album: Youth.
  type: MusicAlbum
  date published: 2018-09-07
album: Twice the Gifts (Half the Love)
  type: MusicAlbum
  date published: 2018-12-04
album: Twice the Gifts (Half the Love)
  type: MusicAlbum
  date published: 2018-12-04
album: Strangers (Rainer + Grimm Remix)
  type: MusicAlbum
  date published: 2019-03-29
album: Solo Piano, Vol. 1
  type: MusicAlbum
  date published: 2019-05-10
album: Ten Years Time
  type: MusicAlbum
  date published: 2019-05-31
album: Ten Years Time
  type: MusicAlbum
  date published: 2019-05-31
album: Back to the Start
  type: MusicAlbum
  date published: 2020-04-17
album: Back to the Start
  type: MusicAlbum
  date published: 2020-04-17
album: Back To The Start
  type: MusicAlbum
  date published: 2020-04-17