9 min read
A Label 309 gateway is the publishing service that quotes, uploads, submits, confirms, and indexes Proof of Existence records through a standard API — while your keys stay on your device and proofs verify from public data.
DevelopersThe Standard
10 min read
The website is one interface, not the whole product. You can publish and verify Label 309 records through a CLI, SDKs, a gateway API, a desktop app, or your own service.
DevelopersGuides
9 min read
Publishing a CardanoWall proof costs money because the gateway pays real Cardano transaction fees and, for files, real Arweave storage — then adds a service margin to run a hosted service. Verifying stays free and needs no server.
GuidesDevelopers
9 min read
Yes — a company or developer can run their own Label 309 gateway, fund its Cardano and storage wallets, and publish standard proofs of existence without using CardanoWall as the hosted operator. Here is what that takes.
Developers
10 min read
How to build your own product on CardanoWall: quote, upload, publish, read, verify, and monitor Label 309 records through the same gateway API CardanoWall itself runs on.
Developers
10 min read
A Label 309 gateway is the publishing engine behind a Proof-of-Existence product: it owns Cardano submission, storage, balances, indexing, and webhooks, so your product can own the user experience instead.
Developers