Holding Hemlock
type: MusicGroup
popularity: 2
followers: 403
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc3ab8522b502ec435c31a7d6cb448314c77dc2b5cee26c9449d3c0e12ac3f31b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953842
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953842
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0039f4a4-c177-47e1-a920-14aa319ebfab.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0039f4a4-c177-47e1-a920-14aa319ebfab.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0039f4a4-c177-47e1-a920-14aa319ebfab
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T22:22:30Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc3ab8522b502ec435c31a7d6cb448314c77dc2b5cee26c9449d3c0e12ac3f31b","name":"Holding Hemlock","registered_at":"2026-06-15T13:44:55Z","symbol":"NIM0726602","token_address":"0x9a8d1a9f429b759ec2fe0b6bcc26a349bd04ede4","type":"artist","uuid":"0039f4a4-c177-47e1-a920-14aa319ebfab"}
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 0xc3ab8522b502ec435c31a7d6cb448314c77dc2b5cee26c9449d3c0e12ac3f31b. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0039f4a4-c177-47e1-a920-14aa319ebfab.json and https://artists.proofprofile.net/proofs/artist/0039f4a4-c177-47e1-a920-14aa319ebfab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T22:22:30Z
  text: {"copyright_id":"0xc3ab8522b502ec435c31a7d6cb448314c77dc2b5cee26c9449d3c0e12ac3f31b","name":"Holding Hemlock","registered_at":"2026-06-15T13:44:55Z","symbol":"NIM0726602","token_address":"0x9a8d1a9f429b759ec2fe0b6bcc26a349bd04ede4","type":"artist","uuid":"0039f4a4-c177-47e1-a920-14aa319ebfab"}
album: Holding Hemlock
  type: MusicAlbum
  date published: 2023-01-04
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