# Gordian Seed Tool — Cryptographic Seed Vault > Cryptographic seed generation, secure storage, and derivation for blockchain applications. (iPhone/iPad app by Blockchain Commons LLC.) - Source: https://appshunter.io/ios/app/gordian-seed-tool/id1545088229 (this page in markdown: same URL + `.md`) - Developer: [Blockchain Commons LLC](https://appshunter.io/developer/1490981327) - Category: Business, Finance - Price: $4.99 - Rating: 5.00/5 from 4 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 17.0 · 14 MB - Languages: American English - Released: 2021-06-30 - Data updated: 2026-08-19 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/gordian-seed-tool/id1545088229/reviews.md ## What is Gordian Seed Tool? Gordian Seed Tool protects your cryptographic seeds while also making them available for easy use. Using Seed Tool, you can generate seeds and store them securely on your device. You can then derive and share multi-signature signing and verification keys from those seeds or use them to sign PSBTs. Sophisticated backup procedures include printed pages and Sharded Secret Key Reconstruction (SSKR) — which lets you split your seed into pieces and send them to trusted parties, who can send them back to you in an emergency for seed recovery. You can even use an entirely offline device (no internet access) to store your seeds and use QR codes to exchange accounts, descriptors, seeds, keys, or PSBTs with online devices running compatible wallet or signing software. The "seeds" generated and protected by Gordian Seed Tool are long strings of truly random numbers used in cryptography. As the name suggests, seeds are the starting point for other things such as cryptocurrency keys and addresses. To be secure, seeds need to be created and saved safely. NOTE: Gordian Seed Tool is not a cryptocurrency wallet. It does not store or transmit value in any cryptocurrency, but it can be used in conjunction with such tools. Gordian Seed Tool is open-source software from Blockchain Commons, a not-for-profit public-good organization. Find our repository on GitHub and check out the code for yourself! ## Key features - Cryptographic seed generation - Secure seed storage - Derive signing and verification keys - Sharded Secret Key Reconstruction (SSKR) - Offline data exchange via QR codes - Open-source software ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/gordian-seed-tool/id1545088229/reviews.md ### 5/5 — Excellent tool *2024-09-14* Can be used to create a virtual key and sign as part of a multi-sig setup. ### 5/5 — Save people money from buying expensive hardware device *2022-10-09* If people don’t have $100+ to spend on hardware device, this is the solution. ## Frequently asked questions about Gordian Seed Tool ### What is Gordian Seed Tool used for? Gordian Seed Tool is used to generate and securely store cryptographic seeds, which are the foundation for cryptocurrency keys and addresses. It also allows you to derive signing keys and use advanced backup methods like SSKR. ### Is Gordian Seed Tool a cryptocurrency wallet? No, Gordian Seed Tool is not a cryptocurrency wallet. It does not store or transmit cryptocurrency value. It is designed to be used in conjunction with compatible wallet or signing software. ### How does Gordian Seed Tool ensure seed security? It offers secure on-device storage for generated seeds and supports sophisticated backup procedures like printed pages and Sharded Secret Key Reconstruction (SSKR) for enhanced security and recovery. ### Can Gordian Seed Tool be used offline? Yes, you can use an entirely offline device to store seeds and exchange data like accounts, descriptors, seeds, keys, or PSBTs with online devices using QR codes. ### What is SSKR in Gordian Seed Tool? SSKR stands for Sharded Secret Key Reconstruction. It's a backup method that allows you to split your seed into multiple pieces, which can then be sent to trusted parties for secure recovery in case of an emergency. ### What platforms does Gordian Seed Tool support? Gordian Seed Tool is available on macOS, iPhone, and iPad, as indicated by its supported devices. ### How often is Gordian Seed Tool updated? The latest version, 1.6.2, was released on August 8, 2024, indicating active development and regular updates for the application. ### Does Gordian Seed Tool have ads? No, Gordian Seed Tool does not contain advertisements. It is a paid application with no in-app purchases or ads. ## Version history (last 5 releases) ### 1.6.2 — 2024-08-08 Bug fixes and minor improvements. ### 1.6 — 2024-02-05 Improvements in 1.6 UI Best Practices • BIP39/ByteWords Entry: Shows validity of individual words • Hex Entry: More accessible entry cuts out spaces, other non-hex entries • Seed Printing: Elides some info if necessary to print out a backup of a seed • Fingerprint Info: Seed views now display master fingerprint & Lifehash Resilience Best Practices • Output Descriptor: Output Descriptor can be saved as seed metadata Other Chain Expansions • Tezos Support: Generates tz1 addresses & private keys • Ethereum & Tezos Improvements: Better shows necessary data for chains Specification Updates • Envelope is now prime output type for seeds, SSKR, requests, responses • Envelope attachments are supported • Update to Envelope v2, based on IETF feedback • Update to Account Descriptor v2, Output Descriptor v3, based on community feedback • Update to IANA registered CBOR numbers (with backward compatibility as needed) General bug fixes and improvements. ### 1.5 — 2022-05-12 NFC Improvements • Write crypto-seeds to NFC Tags. • Write crypto-hdkeys to NFC Tags. • Write crypto-requests to NFC Tags (developers only). • Read crypto-requests from NFC Tags. • Write crypto-responses to NFC Tags. SSKR Improvements • Write individual SSKR shares to NFC Tags. • Print individual SSKR shares. • Save individual SSKR shares as PDFs (using printing). General bug fixes and improvements. ### 1.4 — 2022-03-12 I/O Improvements in Seed Tool 1.4: • NFC Import: Allows import from NFC Tags. • UR Import: Imports and processes "ur:" scheme strings. • Clipboard Erasure: Erases clipboard in 1 minute when used for export (iOS only). • File Saving: Exports to files, including MicroSDs and iCloud. • SSKR Split: Allows individual export of SSKR shares, such as to different MicroSD cards. New Data Details in Seed Tool 1.4: • Descriptor Checksums: All output descriptors now include their checksum. • Seed Fingerprints: All seed OIBs now display the fingerprint for their master HD key. • Request Details: All crypto-requests now show notes and known key derivations. Other Updates & Fixes in Seed Tool 1.4: • Seed Request Fix: Parses crypto-requests for seeds using the latest spec. • Other: Various UX improvements, interface standardizations, and small bug fixes. ### 1.3.2 — 2022-02-06 Bug fixes related to printing. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-19.*