Interactive demo

One return, four roles.

Walk an FCA COBS quarterly return from import to verified filing. Each role hands the return to the next — and every action writes an entry to the ledger, hashed with real SHA-256 in your browser, chained to the entry before it.

Each role finishes by handing the return to the next — the pulsing avatar shows who's up. Switch personas any time to see what each of them sees.

Immutable audit ledger

CHAIN INTACT ✓

FCA COBS — Q2 · Wayfield Asset Management

No entries yet. Take an action as Alice to start the chain.

That ledger was real

Hashes you could check.

Each entry's SHA-256 hash covers its contents plus the previous entry's hash — alter any record and every hash after it breaks. That's the whole trust model, running in your browser.