COUNSEL
Verify what the broker knew, or should have known, on any given date.
Montgomery v. Caribe Transport II (U.S., May 14, 2026, 9–0) removed the federal shield: brokers now face state-law negligent-selection claims, and those claims turn on what the broker knew or should have known about the carrier. Carso keeps that record, signed every day.
Authority status, insurance on file, safety rating, inspections, crashes, and the connected entities, as the record stood that day. What the broker knew, if they looked. What they should have known, because it was there to see.
The same record on each date of carriage, so changes between hire and loss are visible: a cancelled policy, a revoked authority, a new name at the same address.
If a Certified Diligence Report was ordered, its signed copy and its place in the chain. If none was, the signed record for that date stands on its own.
If we held it, it was knowable.
Negligent selection charges a broker with what a reasonable inquiry would have revealed at the time of selection. Carso provides this record as a service, to any broker, every day.
Counsel asks us for the record as it stood on the dates in question. We return it with its chain proofs. Whether the broker's care was reasonable is a question of state law for the parties and the court; the standard is reasonable care, not the use of any tool.
Pick a date. See the day's signed root.
This reads the public chain directly, from the same repository anyone can read. For a date since 21 September 2026 it shows that day's Merkle root, the link to the day before, and the two independent timestamp tokens.
Source: carso-diligence-lookback-chain, read live.
Signed on the day. Time-stamped by two independent authorities. Published.
- Source. FMCSA registration, authority, insurance, inspection, and crash filings, plus the corporate and court records that connect carriers.
- Signature. Each day, the state of every carrier's record is fingerprinted (SHA-256) and built into a Merkle tree. The day's root is signed by Carso and chained to the day before.
- Time-stamp. Two independent public authorities, FreeTSA and DigiCert, time-stamp each root under RFC 3161. They attest when; Carso attests who.
- Publication. Roots, timestamp tokens, and public keys are published in an append-only public repository. Presenting two versions of a day is detectable by anyone, forever.
- Scope. The daily signed chain begins in September 2026. Four earlier record sets, captured between 30 July and 20 September 2026, were sealed on 23 September 2026 and carry both dates.
Requesting a look-back.
Tell us the carrier (USDOT or MC number), the dates in question, and the matter. We return the signed record for each date, the chain proofs, the verification procedure, and, where one exists, the Certified Diligence Report.
We respond to subpoenas and to authorized requests from counsel of record. We do not release driver-reported material except under legal process.
Nothing on this page is legal advice.