Sigmatropic
type: MusicGroup
popularity: 9
followers: 1930
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc28a8a25b2cc18bf9a2ec7f0fad9536ff2bfb657e7d89f89ea0af4baa088c55f
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/497475d0-c6eb-4901-98c2-13e49c91941e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/497475d0-c6eb-4901-98c2-13e49c91941e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/497475d0-c6eb-4901-98c2-13e49c91941e
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 0xc28a8a25b2cc18bf9a2ec7f0fad9536ff2bfb657e7d89f89ea0af4baa088c55f. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/497475d0-c6eb-4901-98c2-13e49c91941e.json and https://artists.proofprofile.net/proofs/artist/497475d0-c6eb-4901-98c2-13e49c91941e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
album: Sixteen Haiku & Other Stories
  type: MusicAlbum
  date published: 2003-10-06
  track: Haiku Ten
    type: MusicRecording
    duration: PT1M21S
    duration ms: 81866
    explicit: false
    by artist: Sigmatropic
    in album: Sixteen Haiku & Other Stories
      type: MusicAlbum
      date published: 2003-10-06
    isrc code: GBELF0710063
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x222ac1560271f85d61d921cfcd22d4f48234a3af34ec4dbde2addb890d75d490
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958211
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958211
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBELF0710063
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T23:24:33Z
    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 0x222ac1560271f85d61d921cfcd22d4f48234a3af34ec4dbde2addb890d75d490. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GBELF0710063.
      date published: 2026-07-15T23:24:33Z
    audio: Haiku Ten
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 110.131
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.705
      additional property: Energy
        type: PropertyValue
        value: 0.692
      additional property: Speechiness
        type: PropertyValue
        value: 0.027
      additional property: Acousticness
        type: PropertyValue
        value: 0.751
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.851
      additional property: Liveness
        type: PropertyValue
        value: 0.346
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.651
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.915
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Sixteen Haiku & Other Stories
  type: MusicAlbum
  date published: 2003-10-06
  track: Haiku Ten
    type: MusicRecording
    duration: PT1M21S
    duration ms: 81866
    explicit: false
    by artist: Sigmatropic
    in album: Sixteen Haiku & Other Stories
      type: MusicAlbum
      date published: 2003-10-06
    isrc code: GBELF0710063
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-14T20:23:23+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x222ac1560271f85d61d921cfcd22d4f48234a3af34ec4dbde2addb890d75d490
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958060
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958060
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBELF0710063
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-14T20:39:42Z
    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 0x222ac1560271f85d61d921cfcd22d4f48234a3af34ec4dbde2addb890d75d490. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GBELF0710063.
      date published: 2026-07-14T20:39:42Z
    audio: Haiku Ten
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 110.119
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.706
      additional property: Energy
        type: PropertyValue
        value: 0.701
      additional property: Speechiness
        type: PropertyValue
        value: 0.027
      additional property: Acousticness
        type: PropertyValue
        value: 0.733
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.861
      additional property: Liveness
        type: PropertyValue
        value: 0.346
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.665
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.908
      additional property: Key Name
      additional property: Mode Name
album: 16 Haiku & Other Stories
album: Dark Outside
album: Dead Computer Blues

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major

Sixteen Haiku & Other Stories
type: MusicAlbum
date published: 2003-10-06

16 Haiku & Other Stories
type: MusicAlbum
date published: 2004-01-20

16 Haiku & Other Stories
type: MusicAlbum
date published: 2004-01-20

16 Haiku & Other Stories
type: MusicAlbum
date published: 2004-01-20

Dark Outside
type: MusicAlbum
date published: 2007-09-03

Dark Outside
type: MusicAlbum
date published: 2007-09-03

Dead Computer Blues
type: MusicAlbum
date published: 2014-11-18