Dżem
type: MusicGroup
genre: blues rock
description: Dżem is a blues rock band formed in Tychy, Poland. Ryszard Riedel, one of the most famous vocalists from Poland, worked with the band. Their songs include: "Czerwony jak cegła" (Red as a Brick), "Whis
popularity: 5
followers: 1186
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x347ca18eb1d95a25ed309a444c6297b9052c845f84777ec5b1df9df8de07712d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5ed91b23-e415-42b8-b9fa-6b194a3698d1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5ed91b23-e415-42b8-b9fa-6b194a3698d1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5ed91b23-e415-42b8-b9fa-6b194a3698d1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x347ca18eb1d95a25ed309a444c6297b9052c845f84777ec5b1df9df8de07712d","name":"Dżem","registered_at":"2026-06-16T22:42:37Z","symbol":"NIM1198606","token_address":"0xde4240a7717aa7ebb1194a6813ac7907761180c5","type":"artist","uuid":"5ed91b23-e415-42b8-b9fa-6b194a3698d1"}
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 0x347ca18eb1d95a25ed309a444c6297b9052c845f84777ec5b1df9df8de07712d. 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/5ed91b23-e415-42b8-b9fa-6b194a3698d1.json and https://artists.proofprofile.net/proofs/artist/5ed91b23-e415-42b8-b9fa-6b194a3698d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x347ca18eb1d95a25ed309a444c6297b9052c845f84777ec5b1df9df8de07712d","name":"Dżem","registered_at":"2026-06-16T22:42:37Z","symbol":"NIM1198606","token_address":"0xde4240a7717aa7ebb1194a6813ac7907761180c5","type":"artist","uuid":"5ed91b23-e415-42b8-b9fa-6b194a3698d1"}
album: Live Przystanek Woodstock 2003
  type: MusicAlbum
  date published: 2004-07-31
album: Live Przystanek Woodstock 2003
  type: MusicAlbum
  date published: 2004-07-31
album: Live Przystanek Woodstock 2004
  type: MusicAlbum
  date published: 2009-07-28
album: Live Przystanek Woodstock 2004
  type: MusicAlbum
  date published: 2009-07-28