Verify EchoPortfolioContributor Echouser — Reclaim Protocol

Verifies data from EchoPortfolioContributor (app.echo.xyz).

Proves the holder has contributed a positive amount to at least one Echo round (i.e. participated as an investor), without revealing which account. Read from the authenticated Echo portfolio page. The per-guest Echo user id is OPRF-hashed (oprf-raw) so the attestor and verifier see a stable pseudonym rather than the account id, and the "Contributions > $0" condition is asserted as a literal regex match so it is covered by the provider hash rather than being an extracted value a verifier would re-check. NOTE: this 1.0.0 base version pins the author's own portfolio URL and exists only so a per-…

Primary data point: Echouser.

Reclaim Protocol generates a zero-knowledge proof that a user holds an active EchoPortfolioContributor session and exposes the following verifiable data points:

• Echouser

How it works

1. Your user starts a verification session and signs in to EchoPortfolioContributor as they normally would.
2. Reclaim Protocol observes the encrypted EchoPortfolioContributor session through a zero-knowledge proof system, with no credentials leaving the user's device.
3. Your application receives a cryptographic proof of the user's data — verifiable on-chain or in your own backend.

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