Gravestone
type: MusicGroup
genre: death metal
description: thumb|upright=1|Captain Andrew Drake (1684–1743) sandstone gravestone from the Stelton Baptist Church in Edison, New Jersey A gravestone or tombstone is a marker, usually stone, that is placed over a
popularity: 6
followers: 818
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc40098601e97907a4b50ece72e30b82ec0a1b40014a4ba97cd4e89f55311230c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954046
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954046
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/40f5ff0d-f59a-430b-acbf-b8d9782b06f5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/40f5ff0d-f59a-430b-acbf-b8d9782b06f5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/40f5ff0d-f59a-430b-acbf-b8d9782b06f5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T04:53:03Z
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 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 0xc40098601e97907a4b50ece72e30b82ec0a1b40014a4ba97cd4e89f55311230c. Chain 2 (Bitcoin): anchored in block 954046 (2026-06-17T04:53:03Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40f5ff0d-f59a-430b-acbf-b8d9782b06f5.json and https://artists.proofprofile.net/proofs/artist/40f5ff0d-f59a-430b-acbf-b8d9782b06f5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T04:53:03Z
album: Rotten Kill
  type: MusicAlbum
  date published: 2017-05-13
album: In the Valley of Coffins
  type: MusicAlbum
  date published: 2017-12-26
album: Sickening
  type: MusicAlbum
  date published: 2018-03-01
album: Cannibal Curse
  type: MusicAlbum
  date published: 2023-05-05
album: Mosh Of The Living Dead
  type: MusicAlbum
  date published: 2023-08-18
album: Hollow Be Thy Grave
  type: MusicAlbum
  date published: 2023-09-20
album: Hollow Be Thy Grave
  type: MusicAlbum
  date published: 2023-10-13
album: Love and Pieces
  type: MusicAlbum
  date published: 2025-02-15
  track: Keeper of the Dead
    type: MusicRecording
    duration: PT2M54S
    duration ms: 174408
    explicit: false
    by artist: Gravestone
    in album: Love and Pieces
      type: MusicAlbum
      date published: 2025-02-15
    genre: death metal
    isrc code: QZES92558857
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T23:44:02+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x948efe8295b4de187051b0e0dffb38b153c5da93905cce5606e39eacbe494a70
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956856
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956856
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92558857
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:25:57Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x948efe8295b4de187051b0e0dffb38b153c5da93905cce5606e39eacbe494a70. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92558857.
      date published: 2026-07-06T01:25:57Z
    audio: Keeper of the Dead
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 102.186
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.38
      additional property: Energy
        type: PropertyValue
        value: 0.99
      additional property: Speechiness
        type: PropertyValue
        value: 0.063
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.858
      additional property: Liveness
        type: PropertyValue
        value: 0.04
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.511
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.981
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major