underground.substratesymposium.com/buy/sparring working

Trust Score

67 of 95

Open formula: /trust. Recomputed once a day from what alalanet observed and its sources publish; nothing here can be bought.

• single_payer_demand — at most one paying wallet counts — on chain, after the funding check when one was made, or in the catalogue's own figures; often it is the seller's own (paid demand counts 2 at most).

Payments

Read on chain by alalanet

85 payments from 12 wallets, $35.10

USDC on Base into this address since 2026-10-14; alalanet's own test wallet excluded

Repeat payers

7 paid on two or more days

Largest payer

40.0% of the payments

Independent payers

9 of 12 counted

alalanet read the wallets of the 10 largest payers: 1 funded by the seller, not counted; 0 joined to another payer (funded by it, or by the same address within 72 hours before both paid); 1 first funded within 72 hours before paying; the other 2 payers are not counted

This address also receives for 1 other host; the payments above are for all of them.

This listing was first seen on 2026-11-05; payments before that day may be missing, so the figures are a lower bound.

Catalogue says

1 calls from 1 payer in 30 days

the catalogue's own counter (x402 Bazaar), not checked by alalanet

Description (from the catalogue, unverified)

Sparring — Competitive challenge for sharp thinking under adversarial conditions.

Signed history

Verify any statement offline: how.

For agents and owners

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