FastPath Bitcoin API /v1/template/optimized-txids APIPOST /v1/template/optimized-txids · x402 API by FastPath Bitcoin API
Full optimized block template txid list from the live Core v31 optimizer cache. Requests up to 4,000 txids, constrained by Bitcoin block weight. Returns ordered txids, template metadata, baseline-vs-optimized fee totals, mempool size, fee uplift, baseline comparison, coinbase value, and Ed25519 receipt metadata for Stratum V2 Job Declaration workflows.
What does this x402 API do?
FastPath Bitcoin API /v1/template/optimized-txids API. This is an x402-gated POST API resource from FastPath Bitcoin API. TOLL·402 did not invoke this route automatically because doing so was not considered safe. No normalized USD price is recorded; the listing names eip155:137 and eip155:42161 and eip155:480 and Base. No settled paid call has been verified.
- Published price
- No normalized USD price is recorded
- Networks
- eip155:137 · eip155:42161 · eip155:480 · Base
- Latest evidence
- TOLL·402 did not invoke this route automatically because doing so was not considered safe
- Resource ID
- 06fe6f330d4dd514aa5c0f70
Start with a quote-only recipe. Payment signing stays in your project.
const response = await fetch("https://api.nativebtc.org/v1/template/optimized-txids", {
method: "POST",
headers: { "content-type": "application/json" },
body: JSON.stringify({
"type": "http",
"method": "POST",
"bodyType": "json",
"bodyFieldNames": [],
"pathParamNames": [],
"queryParamNames": []
}),
});
console.log(response.status);
console.log(Object.fromEntries(response.headers));
console.log((await response.text()).slice(0, 1000));
// A valid 402 is a quote, not a completed paid call.Review the provider input schema before running this non-read-only method. No payment code is included.
- Exact route checked
not safely testable · potentially-mutating-method:POST
- Origin reachable
HEAD https://api.nativebtc.org/ returned 200.
- Observed in cdp-bazaar
The registry record was observed and retained with provenance.
What evidence supports this listing?
Each record has an exact-route quote outcome. Unresolved templates and potentially mutating methods are labeled instead of being invoked without provider-specific test input. A quote is still separate from a settled paid call. Read the discovery and verification methodology →
Which networks and payment options does it accept?
The normalized listing price is No normalized USD price is recorded. Raw protocol requirements remain visible below for implementation and audit use.