Behavior and consumption
Authors one typed value for later PROGRAM assembly or run consumption; it does not execute or publish.
observation_fact
Labels an address without reading state.
API reference
Exact signatures with descriptions, requirements, inputs, returns, and examples.
observation_fact(ADDRESS, VARCHAR) #
Labels an address without reading state.
Inputs
| Name | Type | Use |
|---|---|---|
address | ADDRESS Required typed SQL value committed to the authored observation. | required positional |
label | VARCHAR Required typed SQL value committed to the authored observation. | required positional |
Returns
| Name | Type |
|---|---|
observation | OBSERVATION |
Typed OBSERVATION authoring value. Returns one canonical typed value. Construction does not execute EVM code, contact RPC, or publish evidence.
Guidance
Validation and failure timing
SQL types bind first; widths, ABI selection, duplicates, empty programs, and selectors validate when the constructor executes.
Determinism, network, and side effects
Construction is deterministic and offline: no RPC, chain mutation, or evidence write.
Use and do not use
Use it to author PROGRAM input, not as proof of execution or future success.
Category and tags
- Category
- Simulation
- Tag
- Program Compiler
- Tag
- Simulate