Stronghold
type: MusicGroup
popularity: 2
followers: 1051
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbfacefbb49bb18ca5c72588f23418a771997fb9c7e71db4b13ffa66810ecef07
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b7757fdf-81fe-4622-b5f8-f2dbbddc06b0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b7757fdf-81fe-4622-b5f8-f2dbbddc06b0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b7757fdf-81fe-4622-b5f8-f2dbbddc06b0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
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 0xbfacefbb49bb18ca5c72588f23418a771997fb9c7e71db4b13ffa66810ecef07. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b7757fdf-81fe-4622-b5f8-f2dbbddc06b0.json and https://artists.proofprofile.net/proofs/artist/b7757fdf-81fe-4622-b5f8-f2dbbddc06b0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
album: Portals Of Illusion
  type: MusicAlbum
  date published: 2004-03-27
album: Step Back
  type: MusicAlbum
  date published: 2005-12-03
album: When We Finally Reach Heaven
  type: MusicAlbum
  date published: 2007-04-16
album: Fortress Rock: Legends Remastered Volume Six
  type: MusicAlbum
  date published: 2012-05-01
album: Cycle of Resistance
  type: MusicAlbum
  date published: 2017-10-03