A decoded call named its recipient as 32 bytes of hex. That is a correct
description of the value and the one form nobody reads — and the only moment in
a wallet where reading the recipient matters is the screen asking somebody to
approve sending them money.
`set_ss58_format` turns it on. Off by default, and deliberately: the prefix is a
property of the chain a caller is talking to rather than of the metadata, so
inferring one would put a plausible, wrong address in front of that same person.
Account types are found by their **registry path**, not by length. A block hash
is also 32 bytes, and rendering one as an address would be a lie a reader cannot
catch — there is a test that `System::BlockHash` stays hex with a prefix set.
`scale_value` carries each value's type id as its context, so the check is on
what the runtime declared.
The vector is crystal_bob on Heisenberg, taken from the chain rather than
computed here, which also pins the two-byte prefix form — 189 needs it, and
getting it wrong yields an address that looks right and belongs to nobody.
Refs #3, quantus/extension#6
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012uDUodEcRbBwNRi3UCmw8f
grenadeandClaude Opus 5
09a96b64bf