Fredrik Carlquist
type: MusicGroup
popularity: 7
followers: 663
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4bc1f4182b697926553352003e7862adbe697b06a813d8d32b360617950e4a4a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f69c3d29-7113-4f33-bd0c-20dfb2c47a23.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f69c3d29-7113-4f33-bd0c-20dfb2c47a23.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f69c3d29-7113-4f33-bd0c-20dfb2c47a23
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T15:47:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4bc1f4182b697926553352003e7862adbe697b06a813d8d32b360617950e4a4a","name":"Fredrik Carlquist","registered_at":"2026-06-21T15:31:05Z","symbol":"NIM1959960","token_address":"0x9197de2e90d5c716ba3cb3271b9d12bde08fd8bf","type":"artist","uuid":"f69c3d29-7113-4f33-bd0c-20dfb2c47a23"}
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 0x4bc1f4182b697926553352003e7862adbe697b06a813d8d32b360617950e4a4a. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f69c3d29-7113-4f33-bd0c-20dfb2c47a23.json and https://artists.proofprofile.net/proofs/artist/f69c3d29-7113-4f33-bd0c-20dfb2c47a23.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T15:47:51Z
  text: {"copyright_id":"0x4bc1f4182b697926553352003e7862adbe697b06a813d8d32b360617950e4a4a","name":"Fredrik Carlquist","registered_at":"2026-06-21T15:31:05Z","symbol":"NIM1959960","token_address":"0x9197de2e90d5c716ba3cb3271b9d12bde08fd8bf","type":"artist","uuid":"f69c3d29-7113-4f33-bd0c-20dfb2c47a23"}
album: Fredrik Carlquist Playing Cool
  type: MusicAlbum
  date published: 2010-11-04
album: Àgua Doce
  type: MusicAlbum
  date published: 2011-02-09
album: Barcelona - Estocolmo
  type: MusicAlbum
  date published: 2012-09-17
album: Reruns Volume 1
  type: MusicAlbum
  date published: 2013-02-20
album: Bossa Nova, Vol. 1
  type: MusicAlbum
  date published: 2013-10-30
album: Fredrik Carlquist & Dave Mitchell
  type: MusicAlbum
  date published: 2017-02-03
album: Spanish Incidents
  type: MusicAlbum
  date published: 2019-02-28
album: Stride and Shine
  type: MusicAlbum
  date published: 2019-03-28
album: Clarinet for Dreamers
  type: MusicAlbum
  date published: 2019-04-29
album: Saxophone Conversations
  type: MusicAlbum
  date published: 2020-02-18
album: O Astronauta
  type: MusicAlbum
  date published: 2020-05-15
album: Cool Jazz with Fred
  type: MusicAlbum
  date published: 2024-02-02
album: Chiang (Live)
  type: MusicAlbum
  date published: 2025-08-29