Whitepaper
The technical paper behind noircash - notes, keys, the spend circuit, the vault, gas abstraction and the security and privacy analysis.
The whitepaper describes noircash end to end: NOIR as a Pons token and the private vault around it, how notes, commitments and nullifiers work, how the keys come from one wallet signature, what the spend circuit proves, how the vault's shares earn the Pons creator fees through the harvester, how private transactions pay for their own gas through ERC-4337, and the security and privacy analysis.
The same material, page by page and kept in step with the code, is in these docs: start from Key concepts or Architecture.