A tamper-evident record for every batch

Every step a batch of seaweed takes -- harvested, dried, handed to a supplier, sold to a buyer, exported -- is recorded as its own permanent entry, never an edit to a previous one. That history is exactly what gets hashed and anchored on a public blockchain ledger, one fingerprint per event.

No plaintext ever goes on-chain -- not a farmer's name, not a price, not a location. Just a cryptographic fingerprint, plus enough metadata to tell which batch it belongs to. Anyone who fetches a batch's recorded events from Agal can recompute the same fingerprint and confirm it still matches what's on-chain, which is what makes the history verifiable rather than just claimed.

See How it works for the full step-by-step pipeline.