About

AsOf is a temporal fact ledger.

Each entry is one claim: a subject, a fact, the dates it held, the sources that back it and a confidence score. When a fact changes, the old claim is closed and linked to the new one. The record is neutral and open. The Brief is a daily read on what changed in tech and AI, why it matters and what to watch, with a recap of the week every Sunday, kept separate from the record.

Facts

name: AsOf
canonical: https://asof.is
description: AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.
founded: 2026
unit: claim (subject, predicate, value, valid_from, valid_to, sources, confidence)
identifier: ent_ and the entity's slug (ent_google), resolving at https://asof.is/record/{slug}; cite the URL in schema.org sameAs beside the Wikidata QID (/identifiers)
rule: nothing overwritten. Superseded claims get an end date and a pointer.
surfaces: web pages with markdown twins, REST API, MCP server, open snapshots (planned), The Brief
coverage: search and AI first; tech, public companies, general to follow
license: claims are facts; descriptive text CC BY 4.0; Wikipedia-derived text CC BY-SA

How claims are verified

• Only checked claims are published. A claim is checked when its value is the source's own data, parsed (SEC filings, the Hugging Face API, official status dashboards, a publisher's own feed), or when one of its own source pages, read, states its value and its date, in a passage the claim page quotes. Claims not yet checked are held, not shown; the record would rather say less than say something it has not checked.
• Two independent sources: published with status valid (corroborated, not a guarantee of accuracy).
• One source: published as unverified and labeled so.
• Sources disagree: both claims stored and flagged. Nothing resolved silently.
• Two tiers of display among checked claims. Answer surfaces (the facts under an entity name, the state table, the home page, structured data, the MCP default, llms-full.txt, the Brief) show only what the record asserts: valid claims, or a primary source at confidence 0.7 or more. The rest stays on the record, labelled, in timelines, twins and changelogs.
• Primary regulatory filings (SEC EDGAR) and official status dashboards publish with status valid.
• A statement whose source gives no date is shown as undated, never with an invented date.
• Core facts (leadership, ownership, founding, headquarters, financials, names) are re-checked against Wikidata and their own source links on a schedule; a dead or disagreeing source lowers confidence and marks the claim for review.
• Corrections submitted below are queued for human review; we aim to review them on the next scheduled run.

Statuses

valid

Two independent sources agree, or a primary source states it: the record asserts this claim.

unverified

One source so far: shown on the record, not asserted, until a second source or a primary one confirms it.

disputed

Sources disagree: both claims stay on the record, flagged, until a source settles it.

superseded

A later claim replaced it: it keeps its end date and a pointer to the claim that replaced it, and is never deleted.

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