Chris Heifner
type: MusicGroup
popularity: 18
followers: 370
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd184299dfe08d84ae6a6941ed42e626e2e5b0dd8233c9854a9f98249f0090762
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953696
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953696
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7243f175-4338-4efe-af9a-80606c3c4442.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7243f175-4338-4efe-af9a-80606c3c4442.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7243f175-4338-4efe-af9a-80606c3c4442
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T21:45:57Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd184299dfe08d84ae6a6941ed42e626e2e5b0dd8233c9854a9f98249f0090762","name":"Chris Heifner","registered_at":"2026-06-14T16:30:10Z","symbol":"NIM0510703","token_address":"0xec877e84cf76d88151b51198d9d5b724edc70e2f","type":"artist","uuid":"7243f175-4338-4efe-af9a-80606c3c4442"}
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 0xd184299dfe08d84ae6a6941ed42e626e2e5b0dd8233c9854a9f98249f0090762. Chain 2 (Bitcoin): anchored in block 953696 (2026-06-14T21:45:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7243f175-4338-4efe-af9a-80606c3c4442.json and https://artists.proofprofile.net/proofs/artist/7243f175-4338-4efe-af9a-80606c3c4442.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T21:45:57Z
  text: {"copyright_id":"0xd184299dfe08d84ae6a6941ed42e626e2e5b0dd8233c9854a9f98249f0090762","name":"Chris Heifner","registered_at":"2026-06-14T16:30:10Z","symbol":"NIM0510703","token_address":"0xec877e84cf76d88151b51198d9d5b724edc70e2f","type":"artist","uuid":"7243f175-4338-4efe-af9a-80606c3c4442"}
album: Grassy Knoll
  type: MusicAlbum
  date published: 1999-12-02
album: Yesterday
  type: MusicAlbum
  date published: 2000-02-25
  track: Yesterday
    type: MusicRecording
    duration: PT3M42S
    duration ms: 222840
    explicit: false
    by artist: Chris Heifner
    in album: Yesterday
      type: MusicAlbum
      date published: 2000-02-25
    isrc code: USX9P1151386
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T23:57:47+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd9346ef8530b3e23d16055654b8820f34f2d27bbfbe9012421a74564bfefb73b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USX9P1151386
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0xd9346ef8530b3e23d16055654b8820f34f2d27bbfbe9012421a74564bfefb73b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USX9P1151386.
      date published: 2026-07-05T01:12:41Z
    audio: Yesterday
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 121.657
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.738
      additional property: Energy
        type: PropertyValue
        value: 0.388
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.441
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.207
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.425
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.03
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Green Is The Now
  type: MusicAlbum
  date published: 2003
album: Hefshill - Give It Time
  type: MusicAlbum
  date published: 2003
  track: I Will Believe
    type: MusicRecording
    duration: PT4M1S
    duration ms: 241493
    explicit: false
    by artist: Chris Heifner
    in album: Hefshill - Give It Time
      type: MusicAlbum
      date published: 2003
    isrc code: USHM20545115
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T17:23:49+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xfc0e259e5b378e8c2294fff3900b4d2035c4ad55d6fb3c3799836ddfded0dba0
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959043
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959043
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM20545115
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T18:40:26Z
    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 0xfc0e259e5b378e8c2294fff3900b4d2035c4ad55d6fb3c3799836ddfded0dba0. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USHM20545115.
      date published: 2026-07-21T18:40:26Z
    audio: I Will Believe
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 164.144
      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: 0.602
      additional property: Energy
        type: PropertyValue
        value: 0.704
      additional property: Speechiness
        type: PropertyValue
        value: 0.043
      additional property: Acousticness
        type: PropertyValue
        value: 0.14
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Downtown Perspective
album: Live @ Hillside
album: Moving Forward
album: Come Alive - EP
album: Escape With Me
album: Red Dog Wine
album: Songs for Sunday

Liveness
type: PropertyValue
value: 0.079

Valence (Positivity)
type: PropertyValue
value: 0.776

Loudness (dB)
type: PropertyValue
value: -6.355

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major

Downtown Perspective
type: MusicAlbum
date published: 2006-06-15

Live @ Hillside
type: MusicAlbum
date published: 2009-04-15

Moving Forward
type: MusicAlbum
date published: 2011-03-19

Come Alive - EP
type: MusicAlbum
date published: 2018-02-27

Escape With Me
type: MusicAlbum
date published: 2021-03-01

Red Dog Wine
type: MusicAlbum
date published: 2023-04-20

Songs for Sunday
type: MusicAlbum
date published: 2025-05-16