Antminer X9
Monero ASIC Miner
1000KH
HASHRATE
2.47W/KH
EFFICIENCY
2470W
POWER
£857.29
EST. MONTHLY
206
DAYS
EST. ROI
This guide explains Bitcoin Core walletdisplayaddress RPC in plain English. It shows what the command does, what its result means and what it cannot prove.
TL;DR
- What it is: Bitcoin Core 22.0 introduced walletdisplayaddress for descriptor wallets backed by an external signer. Given a Bitcoin address belonging to the selected wallet, Core asks the configured device to display and confirm it and returns the address reported by the signer.
- Why it matters: walletdisplayaddress is valuable because it moves receive verification onto an external device. Its assurance exists only when the wallet mapping is correct and a human compares the complete trusted display before the address is distributed.
- Current position: Require a second reviewer and explicit rollback or expiry, and pause payments, signing or network-dependent services until post-change evidence is complete.
Bitcoin Core walletdisplayaddress RPC in simple English
Bitcoin Core walletdisplayaddress RPC: The address must be part of the selected external-signer wallet policy. An arbitrary address, wrong wallet endpoint or missing signer should fail rather than being displayed as if owned.
Simple example
A node operator is checking Bitcoin Core walletdisplayaddress RPC. Validate network and canonical encoding before the request and compare the returned value exactly. The RPC accepts one required address and returns the address confirmed by the signer.
Key terms in plain English
- Bitcoin Core:
- Widely used software that validates Bitcoin and can provide wallet, network and operator tools.
- RPC:
- A command that software sends to a node to request information or a local action.
- Node:
- A computer running Bitcoin software that checks data and communicates with other peers.
Argument and result
The RPC accepts one required address and returns the address confirmed by the signer. Validate network and canonical encoding before the request and compare the returned value exactly.
Wallet boundary
The address must be part of the selected external-signer wallet policy. An arbitrary address, wrong wallet endpoint or missing signer should fail rather than being displayed as if owned.
Trusted display
The purpose is to defeat host compromise that substitutes a receive address. The human must compare the complete device-displayed address with the intended receiving record, not just a prefix or suffix.
Dependencies
Success depends on the configured signer executable, connected and unlocked device, matching fingerprint, imported descriptors and supported address type. Diagnose each layer without bypassing verification.
Mismatch response
If the host, returned result and device display differ, do not reuse the address or accept funds. Quarantine the workstation and device path, preserve logs without secrets and investigate configuration or compromise.
Receive procedure
Generate from the correct wallet, display on device, get a second-person comparison for high-value use, store the verified address with wallet and index context, then communicate it through an authenticated channel.
How specialists test it
Operators test the command on a non-production node first. They check a normal reply, an invalid request, a timeout and a restart. This shows what the response means and prevents one local result from being mistaken for a network-wide outcome.
Frequently asked questions
What is the main point of Bitcoin Core walletdisplayaddress RPC?
Bitcoin Core walletdisplayaddress RPC: The address must be part of the selected external-signer wallet policy.
For Bitcoin Core walletdisplayaddress RPC, what should a beginner know about argument and result?
The RPC accepts one required address and returns the address confirmed by the signer.
For Bitcoin Core walletdisplayaddress RPC, what should a beginner know about wallet boundary?
The address must be part of the selected external-signer wallet policy.
For Bitcoin Core walletdisplayaddress RPC, what should a beginner know about trusted display?
The purpose is to defeat host compromise that substitutes a receive address.
Conclusion
walletdisplayaddress is valuable because it moves receive verification onto an external device. Its assurance exists only when the wallet mapping is correct and a human compares the complete trusted display before the address is distributed.
Primary sources
- Bitcoin Core 22.0 walletdisplayaddress RPC
- Bitcoin Core 22.0 release notes
- Bitcoin Core external signer documentation
Check the current specification status and the documentation for the exact implementation you operate before moving production funds or changing a mining node.
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