Hostages
type: MusicGroup
genre: deathcore
genre: hardcore
popularity: 18
followers: 4115
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbedbf3d8c72929e5b9d22f7c0d8f0fa1395cd71bc177f7a638084a40d157e06e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953610
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953610
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/13b1771a-d5ae-48bd-aa43-6f02eacda746.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/13b1771a-d5ae-48bd-aa43-6f02eacda746.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/13b1771a-d5ae-48bd-aa43-6f02eacda746
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T07:58:09Z
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 0xbedbf3d8c72929e5b9d22f7c0d8f0fa1395cd71bc177f7a638084a40d157e06e. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/13b1771a-d5ae-48bd-aa43-6f02eacda746.json and https://artists.proofprofile.net/proofs/artist/13b1771a-d5ae-48bd-aa43-6f02eacda746.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T07:58:09Z
album: Murder City
  type: MusicAlbum
  date published: 2019-07-04
album: Death Wish
  type: MusicAlbum
  date published: 2020-01-01
album: Death Wish
  type: MusicAlbum
  date published: 2020-03-13
album: Cop Killer
  type: MusicAlbum
  date published: 2020-07-04
album: 1312
  type: MusicAlbum
  date published: 2020-10-12
album: Tyrant
  type: MusicAlbum
  date published: 2020-11-02
album: CHINGA LA MIGRA
  type: MusicAlbum
  date published: 2020-12-24
album: Climate Of Hate
  type: MusicAlbum
  date published: 2021-03-25
  track: Burdened
    type: MusicRecording
    duration: PT3M34S
    duration ms: 214250
    explicit: true
    by artist: Hostages
    in album: Climate Of Hate
      type: MusicAlbum
      date published: 2021-03-25
    genre: deathcore
    genre: hardcore
    isrc code: QZDA62101833
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-30T04:45:17+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd940a79e77049ff3cfaf6cbab8e0cb1c0f7cd8bb3191dc01c37d35185ddc5a8e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956375
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956375
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62101833
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T16:51:38Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd940a79e77049ff3cfaf6cbab8e0cb1c0f7cd8bb3191dc01c37d35185ddc5a8e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDA62101833.
      date published: 2026-07-02T16:51:38Z
    audio: Burdened
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 116.204
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.269
      additional property: Energy
        type: PropertyValue
        value: 0.965
      additional property: Speechiness
        type: PropertyValue
        value: 0.18
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.345
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.18
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.283
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Coward
  type: MusicAlbum
  date published: 2021-05-07
album: ROT
  type: MusicAlbum
  date published: 2022-01-01
  track: ROT
    type: MusicRecording
    duration: PT4M15S
    duration ms: 255602
    explicit: true
    by artist: Hostages
    in album: ROT
      type: MusicAlbum
      date published: 2022-01-01
    genre: deathcore
    genre: hardcore
    isrc code: QZTAT2156108
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T06:54:34+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x80e308259638dbadf64329ba103f5feb6d9efad51d7477511281d4725bbf91bb
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958388
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958388
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAT2156108
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T09:14:21Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e308259638dbadf64329ba103f5feb6d9efad51d7477511281d4725bbf91bb. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTAT2156108.
      date published: 2026-07-17T09:14:21Z
    audio: ROT
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 78.285
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
      additional property: Time Signature
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: MARTYR
album: MESSENGER OF DEATH
album: UNITED IN BLOODSHED
album: THE WHOLE YEAR INN
album: THE AGE OF SUFFERING, Vol. 1
album: SEVEN PLAGUES
album: BLOOD MONEY
album: EVERYTHING DIES ALONE

Mode (Major/Minor)
type: PropertyValue
value: 0

Time Signature
type: PropertyValue
value: 4

Danceability
type: PropertyValue
value: 0.389

Energy
type: PropertyValue
value: 0.914

Speechiness
type: PropertyValue
value: 0.093

Acousticness
type: PropertyValue
value: 0

Instrumentalness
type: PropertyValue
value: 0.011

Liveness
type: PropertyValue
value: 0.438

Valence (Positivity)
type: PropertyValue
value: 0.137

Loudness (dB)
type: PropertyValue
value: -4.847

Key Name
type: PropertyValue
value: B

Mode Name
type: PropertyValue
value: Minor

MARTYR
type: MusicAlbum
date published: 2022-07-13

MESSENGER OF DEATH
type: MusicAlbum
date published: 2022-10-31

MESSENGER OF DEATH
type: MusicAlbum
date published: 2022-10-31

UNITED IN BLOODSHED
type: MusicAlbum
date published: 2023-07-04

THE WHOLE YEAR INN
type: MusicAlbum
date published: 2023-11-10

THE AGE OF SUFFERING, Vol. 1
type: MusicAlbum
date published: 2024-03-22

SEVEN PLAGUES
type: MusicAlbum
date published: 2024-09-28

BLOOD MONEY
type: MusicAlbum
date published: 2025-05-16

EVERYTHING DIES ALONE
type: MusicAlbum
date published: 2025-10-31