Attestation.single use seal

x402 resource x402 REST

api.craigmbrown.com · api.craigmbrown.com · Crypto & Payments

Provider site ↗

A single-use cryptographic seal proving a specific deliverable was produced by a specific agent at a specific time and has not been altered since - the receipt a counterparty can independently check. | BlindOracle by Craig M. Brown (craigmbrown.com) - counterparty-risk infrastructure sold to autonom

Price per call 0.05 USDC per call published unit: per call

Calls · 30d 1 counted by the source, no daily split

Buyers · 30d — Observed sending wallets · Base USDC · partial sender history · purchases unverified

Volume · 30d $0.00 Observed Base USDC inflows · 30 of 30 complete UTC days measured · lower bound

Inflow growth · 7d — not comparable (baseline under $1 or window incomplete)

Trx · 30d 0 Observed transfers · 30 of 30 complete UTC days measured · not verified purchases

Provider

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Observed inflows · last 30 days

$0.01USD observed / day

2026-10-16grey = not scanned · UTC days2026-11-14

Observed inflows by window for Attestation.single use seal.
Window	Observed	Transfers
Last complete day (2026-11-14)	$0.00	0
Last 7 days	$0.00	0
Last 30 days	$0.00	0
Growth, 7d against the 7 before	not comparable

Source: on-chain transfer scan (USDC on Base) Window: 2026-10-16 → 2026-11-14 Scanned: 30/30 days Sample: 30 days with a measurement First seen: 2026-10-16 Last update: 2026-11-14

Daily history →. Observed transfers show value arriving at the payout address; they do not establish service revenue.

Blockchain wallets

Full addresses · public payment evidence

Receiving wallets are payment addresses published for this service. Sending wallets transferred funds to an exclusive receiving address; this alone does not prove a purchase or identify an agent.

Receiving wallets · provider payment addresses

All published receiving wallet addresses for Attestation.single use seal.
Network	Full wallet address	Evidence
Base	0x5e709929a4ab69ec3a8811d03417869059bc4eb9	Shared address · activity cannot be assigned to this serviceFrom source record · source: x402_bazaar
X Layer	0x9abcf9e2cae7ff99e24f83fab79cae6fa6eda99c	Exclusive to this catalogue serviceFrom source record · source: x402_bazaar

Sending wallets · observed counterparties

No sending wallet addresses have been retained for this service. Buyer wallets are unknown; daily totals and reported payer counts do not reveal their addresses.

Coverage includes retained scans only, not every historical transaction. Earlier daily totals cannot recover sender addresses. Sender lists exclude shared receiving wallets, whose transfers could belong to another service. A provider address does not establish wallet ownership.

Competitors & category benchmark

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Closest competitors Crypto & Payments

Resource 515,534 calls · 0.02 USDC per call —
Agents Trust 13,967 calls · 0.01 USDC per call $144.27
X Pay 6,805 calls · 0.005 USDC per call $5,984.06
Gondola 2,641 calls · 0.01 USDC per call $22,992.72
Onchain SQL (query Base with 2,509 calls · 0.03 USDC per call —

Sorted by source-measured calls, not by our opinion. The right-hand figure is observed inflow, which stays empty for peers whose address is shared.

Category benchmark 36,008 services in this category

With a measured call count	27,366 (76.0 %)
With a published price	33,528 (93.1 %)
With attributable inflows	339 (0.9 %)
Observed inflows · 30d	$1,946,546,936.09
Median measured calls	2
Median price per call	$0.01