K-Line
type: MusicGroup
description: K-Line Electric Trains is a brand name of O gauge and S gauge model railway locomotives, rolling stock, and buildings. Formerly the brand name under which Chapel Hill, North Carolina–based MDK Inc. so
popularity: 7
followers: 148
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4af36e630fe4c832e7bec5430a194707282a0c33fb665d4ad87d5a48bea04c16
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
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additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a607f18a-f9d2-4999-a4b3-487f1623a1c3.json
additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  value: 2026-06-20T08:57:02Z
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 0x4af36e630fe4c832e7bec5430a194707282a0c33fb665d4ad87d5a48bea04c16. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a607f18a-f9d2-4999-a4b3-487f1623a1c3.json and https://artists.proofprofile.net/proofs/artist/a607f18a-f9d2-4999-a4b3-487f1623a1c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
album: In the Red EP
  type: MusicAlbum
  date published: 2002-10-01
album: Lessons Learned
  type: MusicAlbum
  date published: 2003-03-01
album: Final Session
  type: MusicAlbum
  date published: 2009-02-01
album: How You Gonna Scare Us Now?
  type: MusicAlbum
  date published: 2010-07-05
album: How You Gonna Scare Us Now? (Expanded Version)
  type: MusicAlbum
  date published: 2011-01-03
album: K2TS
  type: MusicAlbum
  date published: 2013-01-01
album: K2TS
  type: MusicAlbum
  date published: 2013-06-07
album: K2TS
  type: MusicAlbum
  date published: 2013-06-07
album: K2ts
  type: MusicAlbum
  date published: 2013-06-07
album: Ghost
  type: MusicAlbum
  date published: 2015-02-18
album: Eastern Capital
  type: MusicAlbum
  date published: 2017-03-31
track: Laffy Taffy (feat. K-Line)

Laffy Taffy (feat. K-Line)
type: MusicRecording
duration: PT6M18S
duration ms: 378750
explicit: false
by artist: OMNOM
by artist: K-Line
in album: Alchemy 6
  type: MusicAlbum
  date published: 2020-01-03
genre: bass-house
genre: tech-house
isrc code: USLD91723448
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:07:14Z
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 954130
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-17T19:07:14+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db99694972ed1a6b14e5a2a8854a0a7adcb1107aad6c2ed1f625a37000b77c2. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USLD91723448.
  date published: 2026-06-17T19:07:14Z
audio: Laffy Taffy (feat. K-Line)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 137.068
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0.17
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.496
  additional property: Loudness (dB)
    type: PropertyValue
    value: -10.397
  additional property: Key Name
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    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major