How we source, normalise, and rate

We collect data from three classes of source, in this order of preference: (1) on-chain queries via verified node providers; (2) public issuer disclosures including attestation reports and fact sheets; (3) direct data partnerships with issuers, where available.

Every cell on the platform records the source class, the source identifier, and the retrieval timestamp.

Issuer disclosures use heterogeneous definitions. We normalise to a single schema:

• AUM is reported in USD at the most recent attestation or NAV close.
• Yield is reported as both 7-day and 30-day SEC-style annualised where applicable.
• Holders count is on-chain wallet count, deduplicated by canonical address.
• Top-N concentration is share of supply held by N largest addresses.

We publish four component scores — custody, attestation, liquidity, smart-contract — plus a composite rating on the A+ to C- scale.

Components are computed from observable facts: attestation cadence, audit firm tier, on-chain liquidity depth, contract audit history, redemption mechanics, holder concentration. Each component lists its inputs and weights on the rated product's page.

Ratings are opinions formed from public information, not investment advice. We invite right of reply from issuers and publish corrections promptly.

On-chain metrics update every 60 seconds. Issuer-disclosure metrics update on each new publication. Ratings recompute daily. The methodology document is versioned; this is v1.0 and changes will be announced in advance.

We post corrections publicly on the affected product page with a changelog entry on this methodology page. We are also happy to receive corrections via hello@plinch.io.