Hammer Bros
type: MusicGroup
genre: hardcore
genre: hardcore punk
popularity: 8
followers: 3118
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2ee8b36871e89e3daa0657843ef84c220f757041a3c2ff149ebf9afbf2e4fe11
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953928
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953928
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1e61003c-23cd-45a9-982f-72310dabd836.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1e61003c-23cd-45a9-982f-72310dabd836.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1e61003c-23cd-45a9-982f-72310dabd836
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T10:21:55Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2ee8b36871e89e3daa0657843ef84c220f757041a3c2ff149ebf9afbf2e4fe11","name":"Hammer Bros","registered_at":"2026-06-16T00:01:47Z","symbol":"NIM0873795","token_address":"0x0cb55f351530d8f429218a289c323f6eda61c057","type":"artist","uuid":"1e61003c-23cd-45a9-982f-72310dabd836"}
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 0x2ee8b36871e89e3daa0657843ef84c220f757041a3c2ff149ebf9afbf2e4fe11. Chain 2 (Bitcoin): anchored in block 953928 (2026-06-16T10:21:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e61003c-23cd-45a9-982f-72310dabd836.json and https://artists.proofprofile.net/proofs/artist/1e61003c-23cd-45a9-982f-72310dabd836.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T10:21:55Z
  text: {"copyright_id":"0x2ee8b36871e89e3daa0657843ef84c220f757041a3c2ff149ebf9afbf2e4fe11","name":"Hammer Bros","registered_at":"2026-06-16T00:01:47Z","symbol":"NIM0873795","token_address":"0x0cb55f351530d8f429218a289c323f6eda61c057","type":"artist","uuid":"1e61003c-23cd-45a9-982f-72310dabd836"}
album: Police Story
  type: MusicAlbum
  date published: 1997-07-04
album: The Vitality
  type: MusicAlbum
  date published: 2002-01-01
album: The Vitality
  type: MusicAlbum
  date published: 2002-06-05
  track: Legion
    type: MusicRecording
    duration: PT3M35S
    duration ms: 215826
    explicit: true
    by artist: Hammer Bros
    in album: The Vitality
      type: MusicAlbum
      date published: 2002-06-05
    genre: hardcore
    genre: hardcore punk
    isrc code: USI4R0700833
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T07:15:24+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x68cd814566ab9ab6f016633639c5fc178d507d3cbb9989cfa81b843f8207e622
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958985
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958985
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USI4R0700833
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T08:39:15Z
    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 0x68cd814566ab9ab6f016633639c5fc178d507d3cbb9989cfa81b843f8207e622. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USI4R0700833 — a six-check JSON result.
      date published: 2026-07-21T08:39:15Z
    audio: Legion
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 98.634
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.225
      additional property: Energy
        type: PropertyValue
        value: 0.822
      additional property: Speechiness
        type: PropertyValue
        value: 0.043
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.845
      additional property: Liveness
        type: PropertyValue
        value: 0.291
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.239
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.761
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: The Kids Are Dead
  type: MusicAlbum
  date published: 2009-04-13
album: Sleep Forever
  type: MusicAlbum
  date published: 2010-04-19