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Latest from Protos Systems
Product updates, technical notes, and announcements about Arche and deterministic financial data infrastructure.
Thursday, March 5, 2026
Kevin Downey
Why Deterministic Financial Data Matters
Financial models fail when historical filing-derived data is overwritten. Deterministic datasets preserve lineage so backtests, research, and audits remain reproducible.
Category: Data & Research
AAPL · Income Statement
Conceptual view of versioned statements (illustrative)
as_of=2023-12-31
Revenue
Change captured as a first-class event (not an overwrite)
from382.47Bto383.28B10-K/A
Provenance attachedTemporal truth explicitAs-of queries supported