feat: ZK commitment scheme, proving system research, Stellar CT research, channel calculator - #897
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…lar CT research, and channel calculator - Define versioned payment commitment scheme with domain separation and nullifiers (Calebux#834) - Add zk-payment-verifier Soroban contract with commitment and nullifier verification (Calebux#834) - Research and compare ZK proving systems, recommend Bulletproofs for Soroban (Calebux#833) - Research Stellar Confidential Transactions, recommend custom approach with future CT adoption (Calebux#865) - Add channel capacity calculator with safety margin and XLM volatility buffer (Calebux#874) - Add ChannelRecommendation type to shared payment types (Calebux#874) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
syncro:payment:v1domain separation), nullifier scheme (N = Hash(blinding_factor || service_id)), and on-chainzk-payment-verifierSoroban contract with 5 passing testsChannelRecommendationshared typeCloses #834
Closes #833
Closes #865
Closes #874
Test plan
zk-payment-verifiercontract: 5 tests pass (cargo test -p zk-payment-verifier)is_nullifier_usedquery works🤖 Generated with Claude Code