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Deterministic hash of the provenance audit trail

Source: R/provenance.R
provenanceHash.Rd

Returns a stable hash of the semantic content of the provenance log - the ordered sequence of processing steps and their parameters - deliberately excluding wall-clock timestamps and the machine-specific agent/user. The same pipeline (same steps, same parameters) therefore always hashes to the same value, while any change to a step or its parameters changes the hash. Useful as a reproducibility fingerprint for a processed object.

Usage

provenanceHash(x, algo = "xxhash64")

Arguments

x

A PhysioExperiment (or any object with a provenance method).

algo

Hash algorithm passed to digest::digest (default "xxhash64").

Value

A single character hash string.

See also

provenance, logStep

Examples

pe <- PhysioExperiment(assays = list(raw = matrix(rnorm(40), 10, 4)),
                       samplingRate = 100)
pe <- logStep(pe, "filterSignals", params = list(low = 1, high = 40))
provenanceHash(pe)
#> [1] "13f067c7bf583ceb"