Concrete Cage
type: MusicGroup
popularity: 6
followers: 5
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5436737d46cf5bbe5c5fa6d65721b3ef39573a7d231497540b54fd649356c793
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953871
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953871
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/06d1a3f1-2cf6-4958-881c-8b9a84db6f65.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/06d1a3f1-2cf6-4958-881c-8b9a84db6f65.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/06d1a3f1-2cf6-4958-881c-8b9a84db6f65
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T01:46:03Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5436737d46cf5bbe5c5fa6d65721b3ef39573a7d231497540b54fd649356c793","name":"Concrete Cage","registered_at":"2026-06-15T15:57:48Z","symbol":"NIM0758326","token_address":"0xbccd1298c3e4bc09d6ae2e0d5ab086b32daa8c4c","type":"artist","uuid":"06d1a3f1-2cf6-4958-881c-8b9a84db6f65"}
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 0x5436737d46cf5bbe5c5fa6d65721b3ef39573a7d231497540b54fd649356c793. Chain 2 (Bitcoin): anchored in block 953871 (2026-06-16T01:46:03Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06d1a3f1-2cf6-4958-881c-8b9a84db6f65.json and https://artists.proofprofile.net/proofs/artist/06d1a3f1-2cf6-4958-881c-8b9a84db6f65.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T01:46:03Z
  text: {"copyright_id":"0x5436737d46cf5bbe5c5fa6d65721b3ef39573a7d231497540b54fd649356c793","name":"Concrete Cage","registered_at":"2026-06-15T15:57:48Z","symbol":"NIM0758326","token_address":"0xbccd1298c3e4bc09d6ae2e0d5ab086b32daa8c4c","type":"artist","uuid":"06d1a3f1-2cf6-4958-881c-8b9a84db6f65"}
album: Songs to Say Good Riddance
  type: MusicAlbum
  date published: 2025-10-17