https://gramota.eu/blog Notes from building Gramota — protocol deep dives, end-to-end verification reports, and release notes. en Fri, 08 May 2026 21:47:03 GMT https://gramota.eu/blog/2026-05-08-stripe-shape-release https://gramota.eu/blog/2026-05-08-stripe-shape-release A structural release. New top-level facade, new shared base, every client reads as one product instead of fifteen. Old shapes removed in the same cycle — no deprecations. Fri, 08 May 2026 00:00:00 GMT https://gramota.eu/blog/2026-05-oid4vci-draft-mismatches https://gramota.eu/blog/2026-05-oid4vci-draft-mismatches Real wallets in the wild straddle OID4VCI drafts 13, 14, and 15. The wire-format differences are small but ugly. Here's where they bite, and how to make your issuer accept all of them. Wed, 06 May 2026 00:00:00 GMT https://gramota.eu/blog/2026-05-06-introducing-solnce-demo https://gramota.eu/blog/2026-05-06-introducing-solnce-demo A pretend EU storefront that runs against our production verification API, with an in-browser simulator so anyone can try the flow without installing a wallet. Wed, 06 May 2026 00:00:00 GMT https://gramota.eu/blog/2026-05-end-to-end-eu-wallet https://gramota.eu/blog/2026-05-end-to-end-eu-wallet Issuance + verification both round-trip cleanly with the official EUDIW Android wallet, with batch issuance landing in 0.3. Tue, 05 May 2026 00:00:00 GMT