XrpKit.Swift

XRP Ledger kit for iOS, in the style of the other Horizontal Systems *Kit.Swift libraries. Parity target: xrp-kit-android.

Status: the kit is complete locally and untagged — crypto, canonical binary codec, secp256k1 signer, JSON-RPC provider with endpoint failover, sync (account, ledger, trust lines, history), GRDB storage, submission with node fallback and the public Kit facade, all covered by the offline test suite. Design of record: Unstoppable Wallet iOS spec docs/specs/2026-09-16-xrp-integration-design.md (workstream B).

Test fixtures Tests/XrpKitTests/Fixtures/*.json come from xrpl.js (ripple-binary-codec), ISC license.

Planned scope

• Keys: secp256k1 at m/44'/144'/0'/0/0 from a BIP39 seed; classic r... addresses and X-addresses.
• Sync: server_state, account_info, account_lines, account_tx over JSON-RPC with endpoint failover; reserve from the network.
• Sending: Payment (XRP and issued currencies, destination tag, memo) and TrustSet, canonical binary codec, RFC 6979 low-S DER signatures, LastLedgerSequence on every submission.
• Storage: GRDB, one database per wallet id. State published with Combine.