Sleepy Tom
type: MusicGroup
description: Cam Tatham, known by his stage name Sleepy Tom, is a Canadian DJ and music producer. He released his first EP The Currency on Fool's Gold Records in March 2013. The music video for lead track, "The Cu
popularity: 25
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x78cd7e330cc3535e36493a4fd6ce0fa90a6ea19e5e63f242079f3285fb8bf5bc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/82f60eb9-5f2e-424e-8e91-1de5d267fa1a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/82f60eb9-5f2e-424e-8e91-1de5d267fa1a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/82f60eb9-5f2e-424e-8e91-1de5d267fa1a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x78cd7e330cc3535e36493a4fd6ce0fa90a6ea19e5e63f242079f3285fb8bf5bc","name":"Sleepy Tom","registered_at":"2026-06-12T03:15:51Z","symbol":"NIM0170140","token_address":"0xe3246a1d35f6d7600ac348b3c4ca88882794a51a","type":"artist","uuid":"82f60eb9-5f2e-424e-8e91-1de5d267fa1a"}
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 0x78cd7e330cc3535e36493a4fd6ce0fa90a6ea19e5e63f242079f3285fb8bf5bc. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82f60eb9-5f2e-424e-8e91-1de5d267fa1a.json and https://artists.proofprofile.net/proofs/artist/82f60eb9-5f2e-424e-8e91-1de5d267fa1a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0x78cd7e330cc3535e36493a4fd6ce0fa90a6ea19e5e63f242079f3285fb8bf5bc","name":"Sleepy Tom","registered_at":"2026-06-12T03:15:51Z","symbol":"NIM0170140","token_address":"0xe3246a1d35f6d7600ac348b3c4ca88882794a51a","type":"artist","uuid":"82f60eb9-5f2e-424e-8e91-1de5d267fa1a"}
album: Rainy Lofi
  type: MusicAlbum
  date published: 2022-08-12