Hollow Earth
type: MusicGroup
genre: hardcore punk
genre: melodic hardcore
description: thumb|upright=1.4|A cross-sectional drawing of the planet Earth showing the "Interior World" of Atvatabar, from William R. Bradshaw's 1892 science-fiction novel, The Goddess of AtvatabarThe Hollow Ear
popularity: 5
followers: 2842
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf59e8de695bc957a1af86b1f9ff5cad600c78a3a26345a0c876f8230a81c65ff
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/97ef23a8-e375-4aed-872c-916587bf7620.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/97ef23a8-e375-4aed-872c-916587bf7620.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/97ef23a8-e375-4aed-872c-916587bf7620
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf59e8de695bc957a1af86b1f9ff5cad600c78a3a26345a0c876f8230a81c65ff","name":"Hollow Earth","registered_at":"2026-06-17T18:43:29Z","symbol":"NIM1485020","token_address":"0x6d3599aa81d06a1cc621a9a4ed46e497a1eaf979","type":"artist","uuid":"97ef23a8-e375-4aed-872c-916587bf7620"}
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 0xf59e8de695bc957a1af86b1f9ff5cad600c78a3a26345a0c876f8230a81c65ff. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97ef23a8-e375-4aed-872c-916587bf7620.json and https://artists.proofprofile.net/proofs/artist/97ef23a8-e375-4aed-872c-916587bf7620.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0xf59e8de695bc957a1af86b1f9ff5cad600c78a3a26345a0c876f8230a81c65ff","name":"Hollow Earth","registered_at":"2026-06-17T18:43:29Z","symbol":"NIM1485020","token_address":"0x6d3599aa81d06a1cc621a9a4ed46e497a1eaf979","type":"artist","uuid":"97ef23a8-e375-4aed-872c-916587bf7620"}
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