EchoUploader

About EchoUploader

EchoUploader is a decentralized file storage and on‑chain proof of creation service built for the Cardano ecosystem. It lets anyone anchor the existence and integrity of any file directly on Cardano, while using IPFS for distributed storage. Every ANCHOR operation costs a fixed $1 USD equivalent in ADA, powered by Charli3 oracle pricing with a CoinGecko fallback, making costs simple, predictable, and transparent for users.

EchoUploader offers two ANCHOR modes. Public ANCHOR uploads your file to IPFS via Pinata, anchors its SHA‑256 hash on Cardano, and generates a shareable proof page at ‎/anchor/{txHash} so anyone can independently verify the file’s timestamp and integrity. Private ANCHOR is designed for privacy‑sensitive content: the file never leaves the user’s device, and only the SHA‑256 hash is written on‑chain, providing a lightweight notarization layer without exposing data.

The platform includes a file registry with on‑chain metadata anchoring (label 674), subscription‑based storage quotas (Pioneer, Architect, Galactic tiers), real‑time usage monitoring, and on‑chain verification of subscription payments. MeshJS multi‑wallet support ensures broad compatibility with Cardano wallets, while a 4‑locale UI (English, Simplified Chinese, Traditional Chinese, Japanese) makes the product accessible to global users and businesses.

EchoUploader is part of the EchoForge infrastructure suite and integrates with EchoID for discounts and with EchoDash via EchoSDK v3. By combining IPFS, Cardano native tokens, and oracle‑based pricing into a unified experience, EchoUploader provides a simple, verifiable way to prove “who anchored what, and when” on Cardano.