Marc With a C
type: MusicGroup
genre: nerdcore
description: Marc with a C is the stage name of Marc Sirdoreus (born January 17, 1978), an indie pop singer-songwriter from Orlando, Florida. He has released fifteen official albums and numerous other EPs and comp
popularity: 3
followers: 3591
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2ee87d8411253539c8fcdf29aaf0132cc13ea88163073349e885687ca3fba119
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954516
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954516
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a02fd1b5-446a-410b-ad99-6b67e1ae8068.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a02fd1b5-446a-410b-ad99-6b67e1ae8068.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a02fd1b5-446a-410b-ad99-6b67e1ae8068
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T07:04:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2ee87d8411253539c8fcdf29aaf0132cc13ea88163073349e885687ca3fba119","name":"Marc With a C","registered_at":"2026-06-20T05:26:43Z","symbol":"NIM1525852","token_address":"0x6a038dae5396bc96370fbc4ae11a8d2989a24544","type":"artist","uuid":"a02fd1b5-446a-410b-ad99-6b67e1ae8068"}
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 0x2ee87d8411253539c8fcdf29aaf0132cc13ea88163073349e885687ca3fba119. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a02fd1b5-446a-410b-ad99-6b67e1ae8068.json and https://artists.proofprofile.net/proofs/artist/a02fd1b5-446a-410b-ad99-6b67e1ae8068.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T07:04:44Z
  text: {"copyright_id":"0x2ee87d8411253539c8fcdf29aaf0132cc13ea88163073349e885687ca3fba119","name":"Marc With a C","registered_at":"2026-06-20T05:26:43Z","symbol":"NIM1525852","token_address":"0x6a038dae5396bc96370fbc4ae11a8d2989a24544","type":"artist","uuid":"a02fd1b5-446a-410b-ad99-6b67e1ae8068"}
album: Human Slushy
  type: MusicAlbum
  date published: 2002-08-14
album: Human Slushy (Taylor's Version)
  type: MusicAlbum
  date published: 2002-08-15
album: Hrg (Excerpts from an Unfinished Project)
  type: MusicAlbum
  date published: 2003-07-01
album: Bubblegum Romance
  type: MusicAlbum
  date published: 2004-08-28
album: Bubblegum Romance
  type: MusicAlbum
  date published: 2004-08-28
album: This World Is Scary as Fuck
  type: MusicAlbum
  date published: 2005-09-01
album: This World Is Scary as Fuck
  type: MusicAlbum
  date published: 2005-09-01
album: Shock Treatment (Interpretations)
  type: MusicAlbum
  date published: 2005-12-01
album: Life's so Hard
  type: MusicAlbum
  date published: 2006-08-01
album: Life's so Hard
  type: MusicAlbum
  date published: 2006-08-01
album: Life's So Hard
  type: MusicAlbum
  date published: 2006-08-01
album: Rock Stars Made of Stars
  type: MusicAlbum
  date published: 2006-12-01
album: Another Planned Slip
  type: MusicAlbum
  date published: 2006-12-01
album: Normal Bias
  type: MusicAlbum
  date published: 2007-08-01
album: Normal Bias
  type: MusicAlbum
  date published: 2007-08-01
album: Linda Lovelace for President
  type: MusicAlbum
  date published: 2008-04-01
album: Linda Lovelace for President
  type: MusicAlbum
  date published: 2008-04-01
album: Losing Salt
  type: MusicAlbum
  date published: 2009-05-01
album: Losing Salt
  type: MusicAlbum
  date published: 2009-05-01
album: Pop! Pop! Pop!
  type: MusicAlbum
  date published: 2010-04-03
album: Pop! Pop! Pop!
  type: MusicAlbum
  date published: 2010-04-03
album: Retrolowfi: 10 Years Of Marc With a C
  type: MusicAlbum
  date published: 2010-07-07
album: Motherfuckers Be Bullshittin'
  type: MusicAlbum
  date published: 2011-06-21
album: Motherfuckers Be Bullshittin'
  type: MusicAlbum
  date published: 2011-06-21
album: Recorded Sound
  type: MusicAlbum
  date published: 2011-11-29
album: Good Clean Fun
  type: MusicAlbum
  date published: 2012-03-27
album: Actual Bubblegum Pop
  type: MusicAlbum
  date published: 2012-11-13
album: Popular Music
  type: MusicAlbum
  date published: 2013-02-05
album: Popular Music
  type: MusicAlbum
  date published: 2013-02-05
album: An Introduction to Marc with a C
  type: MusicAlbum
  date published: 2013-09-03
album: The Real Live Sound of Marc with a C!
  type: MusicAlbum
  date published: 2014-06-10
album: Have an Okay Time with Claire and the Potatoes!
  type: MusicAlbum
  date published: 2014-07-15
album: Roll with the Flow (2014 Version)
  type: MusicAlbum
  date published: 2014-12-02
album: 25 Lo-Fi Cover Songs (2015-1999)
  type: MusicAlbum
  date published: 2015-01-01
album: Exactly Where I Am
  type: MusicAlbum
  date published: 2015-02-16
album: Exactly Where I Am
  type: MusicAlbum
  date published: 2015-02-16
album: Frankenstein's Bastard Daughter ​/ ​Television
  type: MusicAlbum
  date published: 2016-03-08
album: Unicorns Get More Bacon
  type: MusicAlbum
  date published: 2016-03-08
album: Unicorns Get More Bacon
  type: MusicAlbum
  date published: 2016-03-08
album: Cark
  type: MusicAlbum
  date published: 2016-12-09
album: Song for the Sad Girls
  type: MusicAlbum
  date published: 2017-02-23
album: Half Serious, Half Kidding
  type: MusicAlbum
  date published: 2017-06-13
album: Half Serious, Half Kidding
  type: MusicAlbum
  date published: 2017-06-13
album: A Song About Duke Energy / I Actually Literally Want You to Die
  type: MusicAlbum
  date published: 2017-09-16
album: Obscurity
  type: MusicAlbum
  date published: 2018-02-02
album: Obscurity
  type: MusicAlbum
  date published: 2018-02-02
album: Maybe It'll Be Good: The Best of Marc with a C!
  type: MusicAlbum
  date published: 2019-12-06
album: Life During Wartime
  type: MusicAlbum
  date published: 2020-05-31
album: The Death of Everything
  type: MusicAlbum
  date published: 2020-07-31
album: Turbofucked
  type: MusicAlbum
  date published: 2020-10-30
album: The Meek Shall Inherit Nothing
  type: MusicAlbum
  date published: 2020-11-06
album: low fidelity (or "how i spent the nervous breakdown")
  type: MusicAlbum
  date published: 2021-01-15
album: Low Fidelity (Or "How I Spent the Nervous Breakdown')
  type: MusicAlbum
  date published: 2021-01-15
album: The Intermission (Or "Let's All Kill Each Other")
  type: MusicAlbum
  date published: 2021-08-06
album: Suicide Hotline
album: The Intermission Mourns (Or Goodnight Papa Nez)
album: Thanatophobia
album: Running the World
album: Youth Against Fascism
album: John Who?
album: Please Believe in Yourself, Alright?
album: Flowers for Analog
album: Half Serious, Half Kidding: The Soundtrack to the Documentary

Suicide Hotline
type: MusicAlbum
date published: 2021-11-19

The Intermission Mourns (Or Goodnight Papa Nez)
type: MusicAlbum
date published: 2021-12-30

Thanatophobia
type: MusicAlbum
date published: 2022-02-22

Running the World
type: MusicAlbum
date published: 2022-03-11

Youth Against Fascism
type: MusicAlbum
date published: 2022-07-15

John Who?
type: MusicAlbum
date published: 2022-10-07

Please Believe in Yourself, Alright?
type: MusicAlbum
date published: 2023-11-17

Flowers for Analog
type: MusicAlbum
date published: 2024-03-01

Half Serious, Half Kidding: The Soundtrack to the Documentary
type: MusicAlbum
date published: 2024-05-31

Steamed Clams
type: MusicAlbum
date published: 2025-11-13

Steamed Hams
type: MusicAlbum
date published: 2025-11-14