Checksum validation process

[victorboyd711572]

How are checksums validated?

[ilyar]

Please clarify your question and provide more information about your case

[janicegrech1-hash]

Hi @ilyar and @victorbyd711572!

I'm diving into this for the TL-B Toolchain bounty (15,000+ TON pool on TON ID mini-app) to help streamline checksum validation docs and code for better TON serialization.

To clarify the question: I believe this is asking about how the codegen tool validates checksums in generated TypeScript for TL-B schemas (e.g., during cell building/parsing to prevent corruption in smart contract interactions).

From my quick scan of /src/:

• Checksum logic seems handled in cell.ts or builder.ts via TON's standard CRC16 or hash refs (e.g., cell.hash() or similar).
• But it's not explicitly documented—should we add a validation step in the generator?

Proposal to contribute:

1. Add a validateChecksum(schema) method in the generated TS code.
2. Update README with an example: e.g., for a schema with refs, auto-check cell.beginParse().loadUint(4) against expected.
3. Tests in /test/ for edge cases (invalid checksum throws SemanticError).

If this aligns, I'll fork and send a PR this week! Any pointers on the exact validation algo in TON TL-B?

Thanks! 🚀