Constant LEDGER_WHAT 

pub const LEDGER_WHAT: &str = "The D5005's floating-point DSP block as the card measured it: each receipt one run of the oracle \
persona (codegen_sva::fp_oracle) on the image the build compiled, recorded by the d5005_fp_receipt example only when the \
build passed, its discriminator ledger regenerates the engine it compiled, the card configured that image without error \
and the measurement finished. Its inputs are kept beside it in fp_receipts/<build>-<measurement>/.";

What the receipts ledger says of itself when it starts.