
Cryptowerk Seal
Anchor in blockchains for data integrity - with no wallet!
Cryptowerk Seal launched on March 4, 2019 with 4 votes.
What it does
Cryptowerk Seal API seals/anchors the fingerprints of up to 1 million digital assets per second into multiple blockchains with no wallet needed. Verify the integrity of any data asset (document, IOT, supply chain...) at any time. Free trial available!
Does a similar job
all alternatives →

- SVSeal – Verifiable timestamp for your private ideas2022 · docs.planet.ink · ▲113
- ARAnchor Relay – A faster, easier way to get Let's Encrypt certificates2025 · anchor.dev · ▲80
From the cryptic terminal commands to the innumerable ways to shoot yourself in the foot, I always struggled to use TLS certificates. I love how much easier (and cheaper) Let's Encrypt made it to get certificates, but there are still plenty of things to struggle with. That's why we built Relay: a free, browser-based tool that streamlines the ACME workflow, especially for tricky setups like homelabs. Relay acts as a secure intermediary between your ACME client and public certificate authorities like Let's Encrypt. Some ways Relay provides a better experience: - really fast, streamlined…
Let's Seal – Let's Encrypt for document signing, free and self-hostedJul 2026 · github.com · ▲94TLDR, Let's Seal gives the finger to Adobe and every doc signing tool (docusign, google, etc) who pay to play with the Adobe Approved Trust List and then charge you for something that should be free. Currently even the person checking if a document/contract is sealed or code is authentic has to also be inside the same Adobe walled garden too. Verification, the part that should be free is the part everyone charges for. Thats the shape Let's Encrypt fixed for TLS, and I wanted the same thing for documents and files. The core idea therefore needed to go a bit beyond e signatures and i…
CipherStash Stack – Data Level Access Control in TS/JSMay 2026 · cipherstash.com · ▲17Hi HN, I'm Dan Draper, founder of CipherStash. We've spent 5 years building per-value searchable encryption tech. We realized that encryption like this is incredibly powerful but the engineering required is generally not worth the effort. So we built a platform and opensource SDK to take the cry out of cryptography :) CipherStash Stack is: * A searchable encryption SDK for TS and Postgres * Fast, key management with Zerokms (backed by HSM) * A transparent SQL proxy * Auth library and OIDC federation service * Skills for data security Integrations include Prisma Next, Drizzle, Auth0, Clerk…
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