# TON CatChain

| Name | Fixed? | Comment |
|------|---|---------------------------------------|
|CA2-01| ✔️ | |
|CA2-02| ✔️ | |
|CA5-01| ✔️ | `hash(payload)` now also covers block data.<br>This behavior is enabled by a flag in config. |
|CA5-02| ✔️ | Size of a block is now limited (16kb).<br>Block height is now limited, and blocks from misbehaviouring nodes are now ignored.<br>See `doc/catchain-dos.md` for details. |
|CA5-03| ✔️ | |
|CA5-04| ✔️ | |
|CA5-05| ✔️ | |
|CA5-06| ✔️ | |
|CA5-07| ✔️ | |
|CA5-08| ✔️ | |
|CA5-09| ✔️ | |
|CA5-10| ✔️ | |
|CA5-11| ✔️ | |
|CAA-01| ✔️ | Fixed in the same way as CA5-01 (hash now covers block data). |
|CAA-02| ✔️ | |
|CAE-01| ✔️ | |
|CAN-01| ✔️ | |
|CAN-02| ✔️ | |
|CAT-01| ✔️ | |
|CAT-02| ✔️ | |
|CAT-03| ✔️ | |
|CAT-04| ✔️ | |