Cement Diver
type: MusicGroup
genre: shoegaze
genre: slowcore
popularity: 9
followers: 820
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbfcf10e6df6f69a68241a882d41d84245c9c5e6d674b118ea4d954f0dc5b9422
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954047
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954047
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/420e5637-ffc0-47e9-ac1e-f70150c1f943.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/420e5637-ffc0-47e9-ac1e-f70150c1f943.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/420e5637-ffc0-47e9-ac1e-f70150c1f943
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T04:56:08Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbfcf10e6df6f69a68241a882d41d84245c9c5e6d674b118ea4d954f0dc5b9422","name":"Cement Diver","registered_at":"2026-06-16T12:34:17Z","symbol":"NIM1053456","token_address":"0x9c8060d0fb1362c9bc9009b3b4f8b0be722a8b5f","type":"artist","uuid":"420e5637-ffc0-47e9-ac1e-f70150c1f943"}
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 0xbfcf10e6df6f69a68241a882d41d84245c9c5e6d674b118ea4d954f0dc5b9422. Chain 2 (Bitcoin): anchored in block 954047 (2026-06-17T04:56:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/420e5637-ffc0-47e9-ac1e-f70150c1f943.json and https://artists.proofprofile.net/proofs/artist/420e5637-ffc0-47e9-ac1e-f70150c1f943.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T04:56:08Z
  text: {"copyright_id":"0xbfcf10e6df6f69a68241a882d41d84245c9c5e6d674b118ea4d954f0dc5b9422","name":"Cement Diver","registered_at":"2026-06-16T12:34:17Z","symbol":"NIM1053456","token_address":"0x9c8060d0fb1362c9bc9009b3b4f8b0be722a8b5f","type":"artist","uuid":"420e5637-ffc0-47e9-ac1e-f70150c1f943"}
album: Fester
  type: MusicAlbum
  date published: 2022-02-24
album: Held
  type: MusicAlbum
  date published: 2022-03-25
album: just4u
  type: MusicAlbum
  date published: 2022-07-25
album: Tremble
  type: MusicAlbum
  date published: 2022-09-24