Endpoint · onchainGETopen-pay.jp /api/paid/usdc/jpyc/balance ?address=0x52d4901142e2B5680027da5EB47C86CB02a3cA81&chain=polygon
Read the current on-chain JPYC balance of any EVM address on one or all supported chains (Polygon, Kaia, Avalanche, Ethereum), with the token contract and the block number…
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Read the current on-chain JPYC balance of any EVM address on one or all supported chains (Polygon, Kaia, Avalanche, Ethereum), with the token contract and the block number observed at request time. Use before or after a payment, for treasury checks, wallet monitoring, and payment reconciliation. The result does not prove wallet ownership and is not a transaction-finality certificate.Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.002 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://open-pay.jp/api/paid/usdc/jpyc/balance?address=0x52d4901142e2B5680027da5EB47C86CB02a3cA81&chain=polygon
Seen
first 35 days ago · last 13 days ago
54 free handshakes
Payment
Pays through
x402
Offered on?
Arc, Base USDC
Listed on?
Base
Score, from free handshakes onlyweights 2026.09.6
UN
RATED
RATED
0.728 liveness verified, no letter
To a letter · 30 paid calls
0 of 30
Held down by latency p95 · gap to 1.000 is 0.272: 0.072 uncertain ? + 0.200 short ? · 0.072 to B
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| latency p95costs the most it answered as fast as its class |
0.20 | 0.00 | 0.000 | 0.000 | −0.200 | 0 | |
| liveness it answered at all |
0.60 | 1.00 | 0.879 | 0.528 | 0 | −0.072 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.728 | gap to 1.000 = 0.272 · 0.200 short · 0.072 uncertain | 0.728 | −0.200 | −0.072 |
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 × 0.879 liveness
+ 0.200 × 1.000 price stability
= 0.728 → UNRATED: 51 of 30 paid calls weights 2026.09.6 · 51 samples · seed cap_01M1A59RQK9B92FPJT3HT1Y83T|2026-08-27T02:54:20.335Z|2026.09.6
Verify it yourself
npx teppi-check https://open-pay.jp/api/paid/usdc/jpyc/balance?address=0x52d4901142e2B5680027da5EB47C86CB02a3cA81&chain=polygoncurl -s https://api.teppi.xyz/v1/trust/cap_01M1A59RQK9B92FPJT3HT1Y83T