Fern
type: MusicGroup
description: The ferns (Polypodiopsida or Polypodiophyta) are a group of vascular plants (land plants with vascular tissues such as xylem and phloem) that reproduce via spores and have neither seeds nor flowers. T
popularity: 4
followers: 158
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xeff926496bbf307fc23cdeb563f3f9667e64d3dc96129495385c11e7a77493a8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954593
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954593
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bd8fe3f5-8010-4591-a16a-5e73c0a96540.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bd8fe3f5-8010-4591-a16a-5e73c0a96540.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bd8fe3f5-8010-4591-a16a-5e73c0a96540
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:46:01Z
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 0xeff926496bbf307fc23cdeb563f3f9667e64d3dc96129495385c11e7a77493a8. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd8fe3f5-8010-4591-a16a-5e73c0a96540.json and https://artists.proofprofile.net/proofs/artist/bd8fe3f5-8010-4591-a16a-5e73c0a96540.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:46:01Z
album: When I'm Gone
  type: MusicAlbum
  date published: 2018-05-06
album: Facts
  type: MusicAlbum
  date published: 2018-11-26
album: Sorrow
  type: MusicAlbum
  date published: 2018-11-26
album: Let 'em Talk
  type: MusicAlbum
  date published: 2018-11-26
album: Hard Days and Heartaches
  type: MusicAlbum
  date published: 2019-02-15
album: Thinking out Loud
  type: MusicAlbum
  date published: 2020-06-25
album: Talkin to Myself
  type: MusicAlbum
  date published: 2020-10-13
album: Let 'em Know
  type: MusicAlbum
  date published: 2020-11-11
album: Feel No Pain
  type: MusicAlbum
  date published: 2020-12-13
album: Sorrow
  type: MusicAlbum
  date published: 2021-04-11
  track: Sorrow
    type: MusicRecording
    duration: PT3M25S
    duration ms: 205766
    explicit: true
    by artist: Fern
    in album: Sorrow
      type: MusicAlbum
      date published: 2021-04-11
    isrc code: TCAFN2146567
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa7da6c2bdf3d184607a460945e56bcdd2e6808a6fc357e3d0e6a8b977abc27cd
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958650
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958650
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFN2146567
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T03:36:41Z
    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 0xa7da6c2bdf3d184607a460945e56bcdd2e6808a6fc357e3d0e6a8b977abc27cd. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAFN2146567.
      date published: 2026-07-19T03:36:41Z
    audio: Sorrow
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 140.019
      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: 0.74
      additional property: Energy
        type: PropertyValue
        value: 0.652
      additional property: Speechiness
        type: PropertyValue
        value: 0.266
      additional property: Acousticness
        type: PropertyValue
        value: 0.277
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.103
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.6
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.105
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Essentials of Fern
  type: MusicAlbum
  date published: 2021-04-11
  track: Sorrow
    type: MusicRecording
    duration: PT3M25S
    duration ms: 205766
    explicit: true
    by artist: Fern
    in album: Essentials of Fern
      type: MusicAlbum
      date published: 2021-04-11
    isrc code: TCAFN2146567
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T16:39:34+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa7da6c2bdf3d184607a460945e56bcdd2e6808a6fc357e3d0e6a8b977abc27cd
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958444
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958444
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFN2146567
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T19:12:23Z
    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 0xa7da6c2bdf3d184607a460945e56bcdd2e6808a6fc357e3d0e6a8b977abc27cd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAFN2146567.
      date published: 2026-07-17T19:12:23Z
    audio: Sorrow
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 140.029
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      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: Denial
album: All My Fault
album: Cut Me Off
album: Luv Again
album: Lovers or Friends...
album: Another Life
album: Vamos Bailar
album: Luv Me 4ever
album: Helluva Life
album: Is It Love?
album: Phases
album: Fuck You

Time Signature
type: PropertyValue
value: 4

Danceability
type: PropertyValue
value: 0.744

Energy
type: PropertyValue
value: 0.643

Speechiness
type: PropertyValue
value: 0.266

Acousticness
type: PropertyValue
value: 0.27

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.102

Valence (Positivity)
type: PropertyValue
value: 0.61

Loudness (dB)
type: PropertyValue
value: -6.112

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major

Denial
type: MusicAlbum
date published: 2021-07-04

All My Fault
type: MusicAlbum
date published: 2022-02-27

Cut Me Off
type: MusicAlbum
date published: 2022-09-05

Luv Again
type: MusicAlbum
date published: 2022-12-01

Lovers or Friends...
type: MusicAlbum
date published: 2023-03-01

Another Life
type: MusicAlbum
date published: 2023-09-18

Vamos Bailar
type: MusicAlbum
date published: 2023-11-09

Luv Me 4ever
type: MusicAlbum
date published: 2024-01-01

Helluva Life
type: MusicAlbum
date published: 2024-05-28

Is It Love?
type: MusicAlbum
date published: 2024-12-09

Phases
type: MusicAlbum
date published: 2025-02-23

Fuck You
type: MusicAlbum
date published: 2025-08-03