Ext Sleep
type: MusicGroup
genre: ambient
popularity: 3
followers: 88
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x27fd44b8a395437b1b3f32fcfc1d317f386d0c3d65bce93c652be1c4f8e97071
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/d4d669b9-b0fb-41bf-9caa-51c66558b319.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d4d669b9-b0fb-41bf-9caa-51c66558b319.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d4d669b9-b0fb-41bf-9caa-51c66558b319
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x27fd44b8a395437b1b3f32fcfc1d317f386d0c3d65bce93c652be1c4f8e97071","name":"Ext Sleep","registered_at":"2026-06-21T02:40:50Z","symbol":"NIM1794422","token_address":"0x60d3c936e39d8561f28e8a2d81fa03a10d4bbc3e","type":"artist","uuid":"d4d669b9-b0fb-41bf-9caa-51c66558b319"}
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 0x27fd44b8a395437b1b3f32fcfc1d317f386d0c3d65bce93c652be1c4f8e97071. 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/d4d669b9-b0fb-41bf-9caa-51c66558b319.json and https://artists.proofprofile.net/proofs/artist/d4d669b9-b0fb-41bf-9caa-51c66558b319.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x27fd44b8a395437b1b3f32fcfc1d317f386d0c3d65bce93c652be1c4f8e97071","name":"Ext Sleep","registered_at":"2026-06-21T02:40:50Z","symbol":"NIM1794422","token_address":"0x60d3c936e39d8561f28e8a2d81fa03a10d4bbc3e","type":"artist","uuid":"d4d669b9-b0fb-41bf-9caa-51c66558b319"}
album: Ambience
  type: MusicAlbum
  date published: 2015-04-01
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  type: MusicAlbum
  date published: 2017-10-12
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  type: MusicAlbum
  date published: 2018-10-11
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  type: MusicAlbum
  date published: 2022-02-25
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
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