Antminer X9
Monero ASIC Miner
1000KH
HASHRATE
2.47W/KH
EFFICIENCY
2470W
POWER
£860.89
EST. MONTHLY
205
DAYS
EST. ROI
This guide explains Bitcoin Core submitheader 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 0.18.0 submitheader decoded a hex-encoded block header and submitted it as a candidate chain tip if valid. Invalid headers threw errors and success returned no payload.
- Why it matters: submitheader advances header knowledge, not full-chain state. Safe integrations validate exact bytes, interpret empty success narrowly and verify candidate status through independent chain queries.
- 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 submitheader RPC in simple English
Bitcoin Core submitheader RPC: No block body or transactions are supplied. Full validation, UTXO changes and mining work selection require the complete block and normal acceptance pipeline.
Simple example
A miner is checking Bitcoin Core submitheader RPC. Reject whitespace, odd length, appended data and network confusion before RPC submission. Core evaluates syntax, previous-header linkage, target encoding, proof of work, timestamp and chain rules relevant at the header stage.
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.
- UTXO:
- An unspent transaction output: a piece of bitcoin that can be used as an input to a later transaction.
- Node:
- A computer running Bitcoin software that checks data and communicates with other peers.
Input format
Require exactly one canonical 80-byte header encoded as 160 hex characters. Reject whitespace, odd length, appended data and network confusion before RPC submission.
Header checks
Core evaluates syntax, previous-header linkage, target encoding, proof of work, timestamp and chain rules relevant at the header stage. Invalid input raises an error.
Candidate tip
A valid header becomes known and may form a candidate chain tip. It does not necessarily beat accumulated work or replace the active tip.
No success payload
A successful call returns none. Verify presence and status using getblockheader, getchaintips and best-header evidence rather than treating transport success as final state.
Header-only boundary
No block body or transactions are supplied. Full validation, UTXO changes and mining work selection require the complete block and normal acceptance pipeline.
Source and abuse
Authenticate the upstream header source, deduplicate hashes and rate-limit forks and orphans. Public submission can consume memory and validation work.
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 submitheader RPC?
Bitcoin Core submitheader RPC: No block body or transactions are supplied. Full validation, UTXO changes and mining work selection require the complete block and normal acceptance pipeline.
For Bitcoin Core submitheader RPC, what should a beginner know about input format?
Require exactly one canonical 80-byte header encoded as 160 hex characters.
For Bitcoin Core submitheader RPC, what should a beginner know about header checks?
Core evaluates syntax, previous-header linkage, target encoding, proof of work, timestamp and chain rules relevant at the header stage.
For Bitcoin Core submitheader RPC, what should a beginner know about candidate tip?
A valid header becomes known and may form a candidate chain tip.
Conclusion
submitheader advances header knowledge, not full-chain state. Safe integrations validate exact bytes, interpret empty success narrowly and verify candidate status through independent chain queries.
Primary sources
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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