hydra.kd
type: MusicGroup
popularity: 4
followers: 243
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x77491ab77d9d76a5ab4aa5ecc2d4659b264ba788b27b4b66f8aee89cafd7943d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4d489abb-d0e1-4416-841d-1bad0aad5874.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4d489abb-d0e1-4416-841d-1bad0aad5874.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4d489abb-d0e1-4416-841d-1bad0aad5874
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
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 0x77491ab77d9d76a5ab4aa5ecc2d4659b264ba788b27b4b66f8aee89cafd7943d. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4d489abb-d0e1-4416-841d-1bad0aad5874.json and https://artists.proofprofile.net/proofs/artist/4d489abb-d0e1-4416-841d-1bad0aad5874.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: Ghost Stories
  type: MusicAlbum
  date published: 2019-02-02
album: Master Plan (Instrumental Version)
  type: MusicAlbum
  date published: 2019-04-15
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  date published: 2019-09-02
album: Recently Active
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  date published: 2019-11-16
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  date published: 2020-02-14
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  date published: 2020-04-09
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  type: MusicAlbum
  date published: 2020-07-04
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2021-03-17
album: Phobia
  type: MusicAlbum
  date published: 2021-03-17
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  type: MusicAlbum
  date published: 2021-10-21
album: Killing In The Name Of
  type: MusicAlbum
  date published: 2023-10-27
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  type: MusicAlbum
  date published: 2024-09-07
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  type: MusicAlbum
  date published: 2024-09-19
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  type: MusicAlbum
  date published: 2025-07-25