Ethereum and IPFS verification for MyHOME ID regional ledgers. Four regional manifests plus a national root anchor — MYHID_ROOT_02 — committed to Ethereum on 2026-07-27. 133,928,835 distinct US residential property identities. One hash.
133.9M
distinct identities anchored
4 + 1
regional + national anchors
52
state and district ledgers
ETH + IPFS
anchor rails
A Single Fingerprint for a Regional Ledger
A Merkle root is a single cryptographic fingerprint that summarizes every record in a regional ledger. If even one byte changes, one address or one identifier, the fingerprint changes. The roots below are immutable. They prove the ledger that existed at the timestamp shown is the same ledger being referenced now.
One Ethereum transaction. One hash. The four regional roots above are the inputs — keccak256 computed in alphabetical region order. Those four manifests total 137,636,425 rows, of which 133,928,835 are distinct properties: Maryland is sealed in both the Midwest and South trees under two different schemas, which mint different identifiers for the same property, so the row total counts it twice. Only the South ledger for Maryland is served. The manifests and roots are immutable and are reported here exactly as sealed.
Delta Anchor Protocol
ROOT_02 supersedes ROOT_01. Coverage grows.
US housing stock changes slowly — roughly 1.4M new addresses per year against a base of 133.9M. Rather than recomputing the national root, the registry issues versioned delta anchors on a quarterly cadence that fold in new construction and any addresses missed in prior OpenAddresses batching runs. Each delta is a new on-chain transaction with its own hash. ROOT_01 remains on-chain as the prior version and is never modified or replaced.