Address Mapping

Overview

Address mapping provides a controlled relationship between a blockchain address and another piece of data. Examples include mapping a deposit address to a customer, mapping a smart-contract address to a human-readable token symbol, mapping an address across compatible execution environments, or linking an on-chain destination to an internal ledger account.

The mapping can be deterministic, stored in a database, maintained by a smart contract, or supplied by an external naming system. Its trust assumptions depend on where the mapping comes from. A mapping derived by protocol rules can be independently reproduced, while a merchant-maintained customer mapping depends on the accuracy and security of the merchant’s records.

Incorrect mapping can cause serious payment and reporting errors. Reassigning an address to the wrong customer may credit the wrong account. Mapping a token symbol to the wrong contract can cause the system to treat an unrelated asset as supported. Cross-chain mappings can be misleading when two networks use similar address formats but maintain independent state.

Good systems record the network, address type, mapping source, effective dates, and change history. They also avoid assuming that one address always represents one person.

Common payment mappings include one deposit address per customer, one invoice address per order, or a reusable static address linked to an internal account. Token systems also map symbols and asset IDs to contract addresses, which is security-sensitive because duplicate symbols are common.

Mappings need lifecycle controls. Reassigning an old deposit address can miscredit late payments, while deleting a mapping can make historical reconciliation impossible. Systems should preserve immutable history and distinguish current routing from past ownership. Where the mapping comes from an external naming or bridge service, applications should also verify update authority and protect against stale or malicious records.