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
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
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).
Hrg (Excerpts from an Unfinished Project)
Have an Okay Time with Claire and the Potatoes!
Frankenstein's Bastard Daughter ​/ ​Television
A Song About Duke Energy / I Actually Literally Want You to Die
Maybe It'll Be Good: The Best of Marc with a C!
low fidelity (or "how i spent the nervous breakdown")
Low Fidelity (Or "How I Spent the Nervous Breakdown')
The Intermission (Or "Let's All Kill Each Other")
The Intermission Mourns (Or Goodnight Papa Nez)
Half Serious, Half Kidding: The Soundtrack to the Documentary