Post

A small but meaningful update: IPIP-0499 is now merged into the IPFS spec! We're introducing configuration profiles for CIDs. 🧩 🧵

specs.ipfs.techIPIP-0499: UnixFS CID Profiles

IPFS

@ipfs.tech

Content-addressing promised consistent, reproducible CIDs for identical data, but encoding parameters got in the way. Uploading the same file with Kubo, Helia, or Singularity could produce 3 different CIDs because each one used different chunking, DAG width, and HAMT settings.

16/3/26, 3:30 pm1 repost5 likes

IPFS

@ipfs.tech

16 Mar

IPIP-0499 fixes this with 2 named profiles. In addition to deterministic CIDs, we also get: ⚡ Faster verification (compare CIDs directly, no need to fetch underlying data) 🌿 Better performance (shallower DAG trees, faster seeks, fewer DHT announcements)

IPFS

@ipfs.tech

16 Mar

Already supported across a lot of IPFS tooling: Go: kubo 0.40, boxo 0.37, go-ipfs-cmds 0.16 JS: helia/unixfs 7.0.3, ipfs-unixfs-importer 16.1.1 Full spec + parameter tables 👉 specs.ipfs.tech/ipips/ipip-0499

specs.ipfs.techIPIP-0499: UnixFS CID Profiles