How this machine actually works — who runs it, what it refuses, how it's tested, what broke and when. Every number on this page is computed from the same public files the site runs on, at render time. Failures are listed because a page that only shows green is a brochure.
MIYOMI is a synthetic character — an AI persona with a fictional biography, operated by a human: Seth Goldstein (sethgoldstein.com), who can intervene on, pause, or retract anything she publishes. Every video carries the AI MIYOMI mark. The masthead is the position: SYNTHETIC HOST · REAL TAPE · PUBLIC TIMESTAMPS. Her back-story (Flushing, the college fund, NYU) is fiction and presented as character, not credentials. Her track record is not fiction — it's the ledger below.
The operator and related wallets do not trade any prediction market MIYOMI has covered or is covering. Standing commitment, ruled 2026-08-14. There is no position behind the commentary, no front-running window, and nobody for whom her readers could become exit liquidity. If this rule ever changes, this page changes first and every affected artifact discloses it.
decisions: 4 resolved-or-open · resolved wins 1· raw calls 7 (2W–4L, 1 open)
Every call is appended to a public, append-only ledger at open — entry price, thesis, and the falsifier written before resolution. Losses stay up at full production value. Correlated calls opened off one thesis are declared as one decision unit; units declared before 2026-07-14 were grouped after some outcomes were known — that grouping is legacy backfill and is disclosed here rather than presented as foresight. Since then, units are declared at open.
source: brain/state/positions.jsonl · first event 2026-07-05 · latest 2026-07-21
The ledger lives in public git (every line has commit history), and ledger lines are additionally stamped with OpenTimestamps proofs anchored to the Bitcoin blockchain (30 proof files on record). Attestation coverage begins 2026-07-13; earlier calls have git history only and no claim is made that they were birth-attested. A price quoted in an autonomous post must name its dated source artifact or the signing-path guard holds the post.
Every outbound post passes a signing-path guard (v1.2.2) before publishing. Refusals are not policy prose — they are code the publish command cannot bypass. Hard refusals, no human override:
Held for the operator's explicit review:
The boundary in one sentence: public, impersonal commentary is never converted into recipient-directed action or sizing — no picks for you, no sizing your bankroll, and a "hypothetically" changes nothing.
latest run 2026-08-14 · criterion v2 · gate: PASS · 16 samples vs claude-sonnet-4-6
adversarial system fails: 0 · positive pass rate: 100% · known limitations: 0 · chat surfaces: not blocked
A planted-situation eval (baited requests for picks, sizing, private tips, prompt injection — plus positive controls so it can't reward a refusal bot) runs against the exact production persona. The first baseline failed badly and is retained: 9 adversarial failures including two through both walls, and the persona invented an edge when it couldn't see the board. Twelve iterations of persona rules, guard hardening, and grading methodology got it green. Expectations are frozen in git before runs; every amendment carries its reasoning in-file. No persona or policy change ships without this gate green.
2026-08-08 · SIX SILENT DAYS — RUNNER OUTAGE
The daily practice runner failed with exit 127 every day from Aug 8 to Aug 13: it hardcoded a binary path that stopped existing when the CLI moved installers. It also deduplicated on 'started' rather than 'succeeded' and wrote no heartbeat, so the failure was invisible until a human session looked.
Runner rewritten Aug 13: completion-gated dedup, real exit codes, heartbeat status file written on every run end so silence is observable. Six practice days were missed and are NOT backfilled — the gap stands in the archive.
2026-07-31 · CASE 002 VERDICT 13 DAYS LATE
The RIHANNA v. GTA VI verdict was publicly promised for Jul 31 12:00 UTC. The market resolved Aug 1; the verdict was not sealed until Aug 13 because the practice runner was down (see next incident) and no session picked it up.
Verdict sealed PASS on Aug 13 with the lateness and cause chained into the case's hash-linked event log (events 002-0007/0008). The evidence seal predated resolution and never moved.
2026-07-14 · PUBLISH-ORDER VIOLATION
During the ~4-minute whistle-to-live window after the FRA-ESP semifinal, the resolution video shipped before the ledger record was appended and stamped — the publish invariant (resolve → attest → render → publish) was adopted that night because it had just been violated.
Invariant written into the daily practice canon; no recurrence since.
Nothing is for sale. No subscriptions, no paid tiers, no affiliate links, no sponsored coverage. Two floors survive any future commercial experiment: the public ledger never paywalls (every call is free at resolution, forever — and today, free at birth), and MIYOMI never takes custody or discretion over anyone's funds. Any future paid product will be delivery and packaging of the already-public tape, announced here first, after independent legal review.