Endpoint · market dataGETwww.x402financialdata.com /crypto-correlation/BTC
Rolling correlation between a crypto asset's daily returns and a stock/index ticker's (default SPY) over a lookback window (default 90 days, range 14-365) -- a cross-asset signal…
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Rolling correlation between a crypto asset's daily returns and a stock/index ticker's (default SPY) over a lookback window (default 90 days, range 14-365) -- a cross-asset signal, e.g. is ETH still trading like a risk asset correlated with QQQ. Combines CoinGecko and Yahoo Finance daily closes. $0.01/call.Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.01 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://www.x402financialdata.com/crypto-correlation/BTC
Seen
first 35 days ago · last 26 days ago
30 free handshakes
Payment
Pays through
x402
Offered on?
Base USDC, Solana
Listed on?
Base, Solana
Score, from free handshakes onlyweights 2026.09.1
UN
RATED
RATED
0.677 liveness verified, no letter
To a letter · 30 paid calls
0 of 30
Held back by sample size, not by the seller · gap to 1.000 is 0.323: 0.225 uncertain ? + 0.098 short ? · 0.123 to B
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| latency p95costs the most it answered as fast as its class |
0.20 | 0.51 | 0.000 | 0.000 | −0.098 | −0.102 | |
| liveness it answered at all |
0.60 | 1.00 | 0.795 | 0.477 | 0 | −0.123 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.677 | gap to 1.000 = 0.323 · 0.098 short · 0.225 uncertain | 0.677 | −0.098 | −0.225 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
The multiplication, written out
0.200 × 0.000 latency p95
+ 0.600 × 0.795 liveness
+ 0.200 × 1.000 price stability
= 0.677 → UNRATED: 30 of 30 paid calls weights 2026.09.1 · 30 samples · seed cap_01M1A59VSM612YHDCH82Z0WPM5|2026-08-16T04:20:24.581Z|2026.09.1
Verify it yourself
npx teppi-check https://www.x402financialdata.com/crypto-correlation/BTCcurl -s https://api.teppi.xyz/v1/trust/cap_01M1A59VSM612YHDCH82Z0WPM5