Tidemark | Tatum x Walrus Hackathon
Tidemark is a document signing and sharing app where the document itself never lives on our servers. Users upload a contract, collect signatures, and share it and the master copy is stored permanently on Walrus. The blob ID is the source of truth: anyone can retrieve the original directly from a Walrus aggregator without trusting Tidemark, and the storage proof links straight to Walruscan.
When a signer signs, we embed the drawn signature into the PDF and re-upload the signed version to Walrus, so the decentralized copy always reflects the latest signed state. Built on Sui + Walrus + Seal, Nuxt 4 frontend.
Try it: https://tidemark-docs.vercel.app/