This page sets out, in plain prose, the problem Common Credo addresses, how a record works, what happens when someone behaves badly, and why the project is built the way it is. It is longer than the home page and less formal than the specification. It argues nothing; it describes.
A great deal of creditworthiness is real but cannot travel. Consider a textile trader who has taken fabric on credit from her wholesale co-op dozens of times over eight years and repaid every time, usually early. The people around her know she is reliable: her co-op, her suppliers, her customers. When she applies to a microfinance lender two districts away for working capital, she is asked to prove it. She has no formal credit history, no registered collateral, and no audited accounts. The loan officer has never heard of her co-op and has no way to check what she says. The answer is no — not because she is a bad risk, but because she is an unverifiable one.
Hundreds of millions of small businesses are in this position. The knowledge that would let them borrow already exists; it is held locally, in a form that cannot move. Most attempts to solve this have built an institution — a bureau that centralises the data, or a platform that owns the users — and each one recreates the dependency it set out to remove, placing people's reputations inside someone's business model. Common Credo takes the opposite approach: no institution. A small, free, open standard for one portable document, with everything else built by others on top.
The organisation that has actually watched the trader's money move — her co-op — issues her a record: a single digital document, signed with the co-op's digital seal, that lives on her own device rather than on the co-op's server or in any database. The record states who issued it, who it is about, what is being claimed (trade credit honoured, an amount, a period), what kind of vouch it is, and what the issuer is staking on it.
When she later shows it to the distant lender, the lender's software runs two checks in about a second, without contacting any central service:
The lender has still never heard of the co-op, so the record also carries the co-op's registration number, which the lender can check against the national registry that already exists. There is no Common Credo directory to consult; the standard points at registries the country already maintains.
Three parties, one document. The issuer (the co-op) vouches because it has seen the money move, and every record carries its name, its registration and its stake, so its own track record rides on its accuracy. The holder (the trader) carries the proof on her own device, shows it to whom she chooses, and can withdraw it. The verifier (the lender) relies on it because the mathematics cannot be faked, the issuer is publicly anchored, and every signal is visible and priced by the verifier, not by Common Credo. One record is a single data point; in practice a holder carries a bundle of records from several organisations, and no single vouch is meant to be sufficient.
Common Credo enforces nothing. Its defences are structural: they make bad behaviour visible and permanent, and they make it cost the person who attempts it. Only the issuer or the holder can cancel a record, and every cancellation states a public reason. A holder who is cancelled against is notified at once and can publish a dispute — at an address only the holder controls — before any verifier sees the cancellation, and neither party can suppress the other's side. A false dispute, or a spiteful cancellation, becomes a permanent part of the record of whoever made it. Because a standing rests on many records, one malicious act can dent it but not erase it. The standard states plainly that this prices malice rather than preventing it, and that the newest participants are the most exposed.
Common Credo is intended to be free and owned by no one, and to stay that way. It defines a format and provides tools; it runs no service that anyone must depend on. The expensive, hard parts it needs already exist and are reused rather than rebuilt: the signing keys, the tamper-evident records and the relays that carry them come from Nostr, an open protocol; the checks on whether an organisation is real point at government registries that are already maintained. What is left for Common Credo to define is small — the shape of one checkable record — which is the point. A standard's value is in being adopted, and the less it demands, the further it can travel.
The foundations and lineage page sets out the older systems this approach learns from, and the specification gives the exact, formal definition.