2022-01-25 - Hook Chaining

Testnet V2, featuring Hook Chaining, is now live (March 9th 2022). See:
https://xrpl-hooks.readme.io/v2.0/changelog/2022-03-09-hooks-v2-testnet-live

Conceptual Changes

• Chaining
• SetHook Transaction
• Namespaces
• Parameters
• Grants
• Reference Counting

API Changes

• state_foreign_set
• hook_pos
• hook_hash
• hook_skip
• hook_param
• hook_param_set

Behaviour Changes

• Users can set more than one Hook on their account
• Hook bytecode is de-duplicated using unowned reference counted objects HookDefinition
• Users may configure install-time Parameters on their Hooks to change their behaviour.
• Users may grant foreign mutation permission on their Hook State. (state_foreign_set.)
• Users must specify a Namespace for their Hook State to be saved in, to prevent state clobbering.