Ethereum Virtual Machine File System
| Original author(s) | Pellegrino Prevete |
|---|---|
| Developer(s) | The Martian Company |
| Initial release | 2024[1] |
| Written in | Bash, Solidity |
| Engine | |
| Platform | Ethereum |
| Type | File system |
| License | AGPL 3.0[2] |
| Website | github |
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The Ethereum Virtual Machine File System, in short EVMFS, is a distributed, uncensorable, file system running on Ethereum Virtual Machine-compatible blockchain networks.
Architecture
The file system itself consists of a Solidity smart contract.[3] Each network address on the network is assigned a namespace in which files are uniquely identified by their SHA-256 hash.[3] Files are stored onto the blockchain as integer mappings of base64 encoded text strings. After having been correctly uploaded, files are locked to avoid tampering.[4]
Link structure
The full structure of an EVMFS URI is the following:
- evmfs://chainId/deployment_address/namespace/file_hash
where chainId is a numerical identifier for the blockchain network, deployment_address is the network address of the file system, namespace is the address of the user uploading the file and file_hash the unique hash corresponding to the file.
So for example the URI corresponding to the wikitext for the first revision of this article is:
- evmfs://100/0x69470b18f8b8b5f92b48f6199dcb147b4be96571/0x87003Bd6C074C713783df04f36517451fF34CBEf/c37db3073782d593bffa0aed281e755222747628b53be63032ddf140cfbc0555
Due to the untamperable nature of blockchain transactions, the above file cannot be in any way deleted, altered or taken down, thus making the file system uncensorable.
References
- ↑ "mm - themartiancompany/evmfs@e123201". GitHub. 5 October 2024.
- ↑ "COPYING". The Martian Company. Retrieved 2025-01-02.
- ↑ 3.0 3.1 "FileSystem.sol". The Martian Company. Retrieved 2025-01-02.
- ↑ "evmfs-publish". The Martian Company. Retrieved 2025-01-02.
See also
- Dat
- InterPlanetary File System (IPFS)
External links
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