Sportsguitar
type: MusicGroup
description: Sportsguitar is a Swiss band formed in Lucerne in 1993. The band is centered on singer and guitarist Oliver Obert and guitarist Roland Saum, though Saum left Sportsguitar after their third album. Litt
popularity: 3
followers: 680
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfabced39163acf04a6b8c723f97bd03b92a6f5c9b591b9dcdf2b70a0410b0737
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954650
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954650
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d9c2e441-8b0f-45db-b31a-7298764aad77.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d9c2e441-8b0f-45db-b31a-7298764aad77.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d9c2e441-8b0f-45db-b31a-7298764aad77
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T04:51:12Z
additional property: OTSCanonicalRecord
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 0xfabced39163acf04a6b8c723f97bd03b92a6f5c9b591b9dcdf2b70a0410b0737. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9c2e441-8b0f-45db-b31a-7298764aad77.json and https://artists.proofprofile.net/proofs/artist/d9c2e441-8b0f-45db-b31a-7298764aad77.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T04:51:12Z
album: Happy Already
  type: MusicAlbum
  date published: 1998
album: Happy Already
  type: MusicAlbum
  date published: 1998
album: Cicadas' Chirping
  type: MusicAlbum
  date published: 2007-08-03
album: Married, 3 Kids
  type: MusicAlbum
  date published: 2007-08-03
album: Surface
  type: MusicAlbum
  date published: 2007-08-03
album: Married, 3 Kids
  type: MusicAlbum
  date published: 2007-08-03
album: Fade / Cliché
  type: MusicAlbum
  date published: 2007-08-03