MyCasaPro documented its Alpha 5 proof layer around signed contract events, hash-only anchors, and Railgun linkage metadata for milestone and payment records.
What changed
Operational events are represented through canonical JSON hashes and Ed25519 signatures before any optional public anchor is considered.
Anchors retain hashes rather than private payloads, while payment linkage records carry acceptance hashes, nullifiers, and commitments.
The same event trail connects approvals, contracts, milestones, change orders, invoices, payment requests, and receipts without making the chain the primary data store.
Engineering note
Verification should reveal no more than the claim requires. Local evidence, signed events, hash-only anchors, and private settlement linkage are separate layers with different disclosure boundaries.
Provenance
This note is based on verified project source at commit fafa17d. It records a programming change, not a personal-status update.