stealth-research

scratch notes and prototypes for stealth addresses on Solana.

mostly markdown observations and small Python scripts. not a library — just early exploration that ended up shaping stealth-core later.

status

archived as of 2026-05. Active work moved to stealth-core (the crypto primitives) and stealth-sdk (the public TypeScript library on npm).

structure

• notes/ — markdown observations on ECDH, Solana memo program, scanner heuristics
• prototypes/ — small Python scripts testing curve25519, x25519, point addition
• data/ — JSON fixtures and timing measurements

what i learned

• Solana's ed25519 keypairs can be used for X25519 ECDH via Montgomery conversion
• ERC-5564 semantics translate cleanly once you swap secp256k1 → ed25519
• Memo program is fine as a publication channel; mempool indexing is the bottleneck

references

• ERC-5564 — Stealth Address Standard
• Umbra Cash white paper
• Solana ed25519 program
• Montgomery ↔ Edwards conversion