Empty Head
type: MusicGroup
popularity: 3
followers: 611
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7b9c5c68a055e07558b4bb33b38d829a15a354d724bb6a813d1bc26c070b915b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953963
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953963
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/27f14e9c-6282-44fc-b821-60062fa3dcb9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/27f14e9c-6282-44fc-b821-60062fa3dcb9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/27f14e9c-6282-44fc-b821-60062fa3dcb9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T15:12:33Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7b9c5c68a055e07558b4bb33b38d829a15a354d724bb6a813d1bc26c070b915b","name":"Empty Head","registered_at":"2026-06-16T03:30:28Z","symbol":"NIM0923631","token_address":"0x0b0acd14f62f871652c7742c0a53973b5022bd97","type":"artist","uuid":"27f14e9c-6282-44fc-b821-60062fa3dcb9"}
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 0x7b9c5c68a055e07558b4bb33b38d829a15a354d724bb6a813d1bc26c070b915b. Chain 2 (Bitcoin): anchored in block 953963 (2026-06-16T15:12:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27f14e9c-6282-44fc-b821-60062fa3dcb9.json and https://artists.proofprofile.net/proofs/artist/27f14e9c-6282-44fc-b821-60062fa3dcb9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T15:12:33Z
  text: {"copyright_id":"0x7b9c5c68a055e07558b4bb33b38d829a15a354d724bb6a813d1bc26c070b915b","name":"Empty Head","registered_at":"2026-06-16T03:30:28Z","symbol":"NIM0923631","token_address":"0x0b0acd14f62f871652c7742c0a53973b5022bd97","type":"artist","uuid":"27f14e9c-6282-44fc-b821-60062fa3dcb9"}
album: Hunted from Below
  type: MusicAlbum
  date published: 2021-02-24
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  type: MusicAlbum
  date published: 2021-04-09
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  type: MusicAlbum
  date published: 2021-05-14
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  type: MusicAlbum
  date published: 2023-04-14
album: Violence
  type: MusicAlbum
  date published: 2023-09-15
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  type: MusicAlbum
  date published: 2023-09-29