x402 census · api.carbon-cashmere.de · 320d1693cecd · JSON

GET /v1/kaspa-derivatives/blocks/:block_hash

live

Single Kaspa block extract with full DAG topology (parents, selected-parent, blue/daa score, chain-block flag). AI agent API for DAG-aware indexers. Informational research data — not investment advice.

Verdict: live. The unpaid GET reached a valid 402 (confirmed by the re-probe of 2026-10-01).

Facts from the catalogs

Field Value

URL https://api.carbon-cashmere.de/v1/kaspa-derivatives/blocks/:block_hash

Method GET

Price $0.02 USDC = 20000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base); also accepts eip155:137, eip155:42161, eip155:480, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp, algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=, stellar:pubnet

payTo 0xf8b2dD46542175AD46e14e6133340E652665F2Ee

Seller api.carbon-cashmere.de

Catalogs cdp (row updated 2026-09-10)

Listed since (lower bound) 2026-09-10 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-09-10

CDP quality counters 3 calls and 1 unique payers in 30 days, last call 2026-09-10 (catalog-reported, not verified on chain)

Category (keyword rule) research/reports

Templated path yes: contains :param or {param}; probed as listed

x402Version in catalog 2

Service name / tags none

Unpaid probe (census of )

Field

Value

Probe

not probed in this build

Latest re-probe

Field Value

Re-probed at 2026-10-01T13:13:42.000Z (cron)

Verdict now live changed from unprobed

HEAD / GET 402 / 402

accepts[0] {"scheme":"exact","network":"eip155:8453","amount":"20000","payTo":"0xf8b2dD46542175AD46e14e6133340E652665F2Ee","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":300,"extra":{"name":"USD Coin","version":"2"}}

Live amount equals catalog price yes

Latency 2,467 ms

Error none

On-chain facts for the payTo (public address)

Field Value

Distinct payers 13

Payments 23

USDC volume $0.78

Median payment $0.02

First / last payment 2026-06-24 / 2026-09-29

Sampler-shaped share of payments 100.0%

Payers that are not samplers 0

Source forensics-2026-09-30

Address 0xf8b2dD46542175AD46e14e6133340E652665F2Ee

Declared input and output (extensions.bazaar)

{
 "input": {
  "method": "GET",
  "pathParams": {
   "block_hash": "f6d45a4c7ebd80d07d2bcddcc5f98f844baf5cab540cfb7198cc9e2310acf191"
  },
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {}
 }
}

Try it (unpaid: shows the 402)

curl -si -X GET 'https://api.carbon-cashmere.de/v1/kaspa-derivatives/blocks/:block_hash' -H 'accept: application/json'

The catalog declares GET. A 402 answer carries the payment requirements in the JSON body and, for x402 v2, base64 in the PAYMENT-REQUIRED header. This page never sends a payment.

Paid checks (x402, USDC on Base)

GET https://bazaar.agentexchange.work/r/320d1693cecd/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"320d1693cecd"} places this resource at the top of the report and search pages for 30 days for $1.00, labelled. Unpaid requests answer 402 with the terms. Pricing.

Catalog references: agentic.market (CDP Bazaar front end) · this record as JSON · all resources on api.carbon-cashmere.de.