Add streaming payments contract example #22
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A private streaming payments contract for Aztec that enables salary streaming, token vesting, and subscription payments with full privacy. Features: - Linear vesting with optional cliff period - Private streams using notes (amounts, schedules, identities hidden) - Recipient withdrawal of vested tokens - Sender cancellation with unvested token recovery - Full integration with defi-wonderland/aztec-standards Token contract Includes: - 11 unit tests for vesting calculations - 4 integration tests with Token contract (TXE) - 7 e2e TypeScript tests with TestWallet - CI workflow for automated testing Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Enable Corepack for Yarn - Start local network after Noir tests - Wait for network to be ready - Install dependencies and run e2e tests - Upload pxe-test-data on failure Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Fix cancellation issue where sender couldn't nullify recipient's private note. Now stream metadata is stored publicly while token balances remain private. Changes: - Add StreamData struct for public storage in lib.nr - Replace private note storage with PublicMutable<StreamData> - Sender can now cancel streams since data is publicly accessible - Update cancel_stream to take (stream_id, unvested_amount) instead of (stream_id, recipient, unvested_amount) - Add public helper functions for state updates via enqueue Privacy tradeoffs: - Stream existence, parties, and schedule are now public - Token balances and actual withdrawal amounts remain private Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Document public stream registry design vs previous private notes approach - Update privacy model: stream metadata public, token balances private - Update function signatures (cancel_stream now takes stream_id, unvested_amount) - Add design rationale explaining why public registry was chosen - Update storage architecture documentation Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Summary
Features
Test Coverage
Test plan
aztec test --package streaming_payments_contract- 15 Noir tests passyarn test- 7 TypeScript e2e tests pass🤖 Generated with Claude Code