Built to outlast the cloud - verified burns, file checksums, no half-measures.
You share a cloud link → We download & verify every byte → Burn to M-DISC at ultra-low error rates → Ship with complete manifests, managed by our custom dashboard. Every disc is verified. Every batch is tested.
Share cloud link
Every byte verified
Etched in stone, upon your approval
Multi-region sampling
Your time capsule, delivered
Why cloud links? Because we don't want to store your files any longer than necessary, and you shouldn't have to upload gigs of files to yet another service. You keep control.
Your files are precious and irreplaceable. Before burning, we create detailed documentation of every file's integrity. This isn't just organization — it's your proof that what we burned matches exactly what you uploaded, bit for bit.
files_manifest.json
- Complete catalog with SHA-256 hashes, timestamps, MIME typeschecksums_sha256.txt
- Industry-standard verification filesimplified_files_tree.json
- Directory structure mapping, for easy referencemanifest_meta.json
- Summary statistics (file count, total size)We don't organize or modify your files.
Your data is burned exactly as you provided it — no file renaming, no folder restructuring, no "optimization." The disc preserves your original intent and organization (unless parity is desired). Manifest files are not stored alongside the files but stored safely in the dashboard and always downloadable.
Real talk: M-DISC uses a glassy carbon layer — a highly stable, inert material with exceptional resistance to oxidation and thermal degradation. Unlike organic dyes, this inorganic layer forms a permanent structure that behaves more like ceramic than plastic.
When written, the laser delivers concentrated heat that vaporizes portions of the carbon layer, creating physical pits. These pits alter how light reflects off the disc, encoding your data without using chemical reactions. Unlike organic dyes, the recording layer does not degrade or fade over time.
Our Unique Advantage: Verified Burn Quality Every disc undergoes multi-point validation and includes complete SHA-256 checksums. We use professional equipment calibrated specifically for M-DISC media to ensure optimal burn quality.
For critical data, we can generate PAR2 recovery blocks that allow restoration of corrupted files. While M-DISC's physical recording makes corruption unlikely, parity blocks provide an additional safety net. We default this at 10%.
Honest Assessment: For most users, creating duplicate discs provides better protection than parity files on the same disc.
ISO 9660 has been the international standard since 1988 and remains the most widely supported optical disc format across all platforms. We use ISO 9660 with Joliet extensions for maximum compatibility.
M-Discs are readable by most consumer Blu-ray drives. Any standard optical drive can read them — the special recording layer only affects writing, not reading.
M-DISCs use the same optical standards as regular DVDs and Blu-rays. The ISO 9660 standard is so fundamental that implementations exist for virtually every operating system.
Consumer optical drives often haven't been tested with M-DISC media and may produce higher error rates. We validate each drive/media combination and maintain equipment specifically calibrated for optimal M-DISC performance.
Our comprehensive post-burn verification ensures data integrity that casual burning often misses. Most consumer burns skip error rate measurement entirely, missing quality issues that only appear under testing.
Real answer: You could probably do this yourself with enough time and the right equipment. But would you actually get around to it? And would you test every burn properly?
Each disc reference on your dashboard includes checksums_sha256.txt
— a list of SHA-256 hashes for every file on the disc. Verifying these ensures your data burned correctly and hasn’t been altered.
On Windows, we recommend using a tool like HashCheck to validate files. It integrates into File Explorer and compares hashes automatically.
If all files show as verified, you've confirmed bit-perfect preservation of your archive.
Honest answer: While M-DISC's stone-like recording layer is far more stable than organic dyes, we're selling longevity, not magic. Physical damage can still occur to any storage medium.
Best protection remains multiple copies. Even with our superior burn quality and optional parity blocks, creating duplicate discs and storing them separately provides the most reliable long-term protection.
Our disc management portal helps you track which discs contain which data for easier recovery planning and for new replacement discs to be ordered.
Even the best M-DISC burns require proper storage to achieve their 1000+ year potential:
$39 per 100GB disc. Add a second copy for $11 more.