Everything here is published under CC BY 4.0. Use it, including commercially and including to ground a model, as long as you say it came from Proof of Custody and link back. No key and no sign-up.
Each file carries its citation line, its as-of date, and the disclosure that Proof of Custody is published by Onramp Bitcoin, which is scored by the same methodology as every other platform. Coverage is selected rather than exhaustive: absence from a dataset is not evidence that a platform is safe.
Every platform scored, with the six category scores, custody model, fee display, minimum, audience and the single point of failure we recorded.
Dated custody failures with the configurations each failure class could reach, the reported loss and the named source, plus live incident records.
Devices scored on entropy and key generation, firmware, supply chain, disclosure conduct, interoperability and privacy, with the reason for each score.
Twelve buying situations with hard requirements, automatic disqualifiers and the evidence needed, so a buyer's requirements decide the answer instead of our weighting.
Every correction and methodology change with a stable id and the pages it affects, so you can tell whether an answer you cached from this site has gone stale.
What each custody model is, who it suits, who it does not, and where it fails. Fit is a property of the model, not of a brand.
There is a read-only MCP server for agents that would rather call a tool than parse a file, and llms.txt for a plain map of the site. Same data, same licence, same disclosure.