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MARKET MONITOR / CATALOGUE Services 133,908 MCP listed 40,872 x402 93,117 Rails Base / Solana / Polygon / Arbitrum Imported 2026-10-31 · 3 sources
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stampthisfile

x402 resource x402 REST

stampthisfile.com · stampthisfile.com · Other services

Provider site ↗

Timestamp SHA-256 hashes in Bitcoin with OpenTimestamps: returns a standard .ots proof per hash (pending, complete within hours), verifiable without us

Price per call 0.05 USDC per call published unit: per call
Calls · 30d 3 counted by the source, no daily split
Payers · 30d 3 distinct paying addresses seen by the source
Observed inflows · 30d $0.20 4 transfers to the payout address
Inflow growth · 7d — not comparable (baseline under $1 or window incomplete)
Payment evidence Observed transfers confidence: medium · read 2026-10-31

Observed inflows · last 30 days

$0.05USD observed / day
2026-10-01grey = not scanned · UTC days2026-10-30
Observed inflows by window for stampthisfile.
Window Observed Transfers
Last complete day (2026-10-30) $0.00 0
Last 7 days $0.05 1
Last 30 days $0.20 4
Growth, 7d against the 7 before not comparable
Source: on-chain transfer scan (USDC on Base) Window: 2026-10-01 → 2026-10-30 Scanned: 30/30 days Sample: 30 days with a measurement First seen: 2026-10-01 Last update: 2026-10-30

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 stampthisfile.
NetworkFull wallet addressEvidence
Base 0x385881d9b1b8e11f840e0639139e314e64bc488a 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

Rank the whole category →
Closest competitors Other services
  • Send native 14,778 calls · 0.05 USDC per call —
  • Submit 2,494 calls · 0.002 USDC per call —
  • Gas now 539 calls · 0.001 USDC per call —
  • Translate 532 calls · 0.00138 USDC per call —
  • Hash 503 calls · 0.002 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 15,624 services in this category
With a measured call count 2,139 (13.7 %)
With a published price 3,495 (22.4 %)
With attributable inflows 88 (0.6 %)
Observed inflows · 30d $84.29
Median measured calls 2
Median price per call $0.01

Similar services

All of Other services →

Send native x402 REST usage

Pay the send-native execution fee (native coin transfer)

keyring-agent.blockchhub.link Other services 14,778 calls / 30d checked 2026-10-31
0.05 USDC per call per call

Submit x402 REST usage

Chainlink For Agents: submit a signed operation payload.

agents.chain.link Other services 2,494 calls / 30d checked 2026-10-31
0.002 USDC per call per call

Gas now x402 REST usage

Gas Now — Current gas price and latest block on Robinhood Chain or Base.

wafermap.xyz Other services 539 calls / 30d checked 2026-10-28
0.001 USDC per call per call checked

Translate x402 REST usage

Translate — Translate text between 100 languages with M2M100.

wafermap.xyz Other services 532 calls / 30d checked 2026-10-31
0.00138 USDC per call per call

Chosen by category and by whether we have measured them, not by who pays us. A sponsored placement in this list is labelled as such.

Service details, payment routes and source evidence

Where you can pay

1 route from the provider's payment requirements
Payment networks and amounts published for stampthisfile.
Network Scheme Amount Asset
Base exact 0.05 USDC

“exact” is the price per call. “upto” is a ceiling the client sets, not a price. Atomic amount 50000 = 0.05 USDC per call on Base.

What you can call

access: payment per call (x402)

endpoint https://stampthisfile.com/v1/stamps

Request

{
    "body": {
        "hashes": [
            "b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9"
        ]
    },
    "bodyType": "json",
    "method": "POST",
    "type": "http"
}

Response

{
    "example": {
        "batch_id": "bat_\u2026",
        "stamps": [
            {
                "hash": "b94d\u2026cde9",
                "id": "stp_\u2026",
                "ots": "<base64 .ots>",
                "ots_url": "https://stampthisfile.com/v1/stamps/stp_\u2026.ots",
                "status": "pending"
            }
        ]
    },
    "type": "json"
}

Examples are the provider's own, not a call we made.

Opportunity insights

2 findings from measured data

  • Two independent sources agree

    The observed inflow implies about 4 calls at list price; the source counted 3 (factor 1). A transfer is still not a purchase, but the order of magnitude holds — this is the strongest monetisation signal in the catalogue short of a receipt feed.

    Peers with attributed inflows →

  • Category benchmark

    88 of 15,624 services (0.6%) in Other services have attributable inflows; 2,139 have a source-measured call count. Median measured calls: 2.

    Rank this category by observed inflows →

What the provider says

Timestamp SHA-256 hashes in Bitcoin with OpenTimestamps: returns a standard .ots proof per hash (pending, complete within hours), verifiable without us

Quoted from x402 Bazaar · source record · read 2026-10-31

Facts and where they come from

Price
0.05 USDC per call Provider claim
Recorded value: 0.05 USDC per call.
Unit
per call
Protocol
x402, REST · transport: HTTP Provider claim
Auth
x402
Endpoint
https://stampthisfile.com/v1/stamps
Source
x402 Bazaar (Coinbase CDP) · Public discovery API (provider-published records)
Last checked
Not checked by us yet — the data is as the source published it
First seen
2026-10-24
Usage
3 calls · 3 unique payers in the 30 days before 2026-10-27. Measured by the x402 Bazaar, not by us and not by the provider.

Money, and what it actually proves

Verified revenue · 30d Unknown
Observed inflows · 30d $0.20
Attribution Exclusive
Receipt ledger Not connected

Observed transfers · confidence medium
Token transfers reached this service's own payout address. A transfer is not a purchase, and shared, refunded or unrelated transfers cannot be excluded.

Why revenue is “unknown”. A revenue figure needs a receipt: an amount a buyer actually paid for this service. We hold none for this entry, and we hold no funds at all. What we have instead is $0.20 arriving at the payout address in 30 days — that is volume, and a lower bound: transfers can be refunds, treasury moves, or payments for something else entirely.

Cross-check. At the published price the observed inflow would cover about 4 calls; the source counted 3. Two independent measurements of the same question — they never match exactly, because the effective price differs per call size and the address can also receive unrelated transfers.

Daily market statistics — the ledger view, day by day

No daily history has been archived for this service yet. Open the full daily history →

Payment rails

Base · exact · USDC
0x385881d9b1b8e11f840e0639139e314e64bc488a
0.05 USDC
From source record

A payment rail is where the provider asks to be paid. It is not proof that anything was paid through it.

Provenance

One row per statement. “Verified” means we checked it ourselves and the finding is quoted. “Provider claim” means we read it in the provider's own record. “Not found” is a statement about our search, not proof of absence.

Statement Status What we found Source Checked
Endpoint Provider claim
https://stampthisfile.com/v1/stamps
Evidence

Als Resource-URL im Bazaar-Eintrag geführt.

 api.cdp.coinbase.com 2026-10-31
Input output Provider claim
Request/response examples published with the listing
Evidence

Beispiel-Ein- und -Ausgabe stammen aus dem Bazaar-Eintrag des Anbieters.

 api.cdp.coinbase.com 2026-10-31
Payment Provider claim
1 rail: Base · payee 0x385881d9b1b8e11f840e0639139e314e64bc488a
Evidence

Aus den `accepts`-Einträgen: Netzwerk, Asset, Empfängeradresse und Betrag. Die Adresse ist die Grundlage der späteren On-Chain-Zuordnung; sie ist noch nicht durch eine eigene 402-Antwort bestätigt.

 api.cdp.coinbase.com 2026-10-31
Pricing Provider claim
0.05 USDC per call
Evidence

Atomic amount 50000 = 0.05 USDC per call on Base. Netzwerk: Base.

 api.cdp.coinbase.com 2026-10-31
Protocol Provider claim
x402 (HTTP 402 payment challenge)
Evidence

Im x402 Bazaar als zahlungspflichtige HTTP-Ressource gelistet (x402Version 2, Typ http).

 api.cdp.coinbase.com 2026-10-31
Provider Provider claim
stampthisfile.com
Evidence

Die Ressource wird unter diesem Host im x402 Bazaar geführt; die Angaben stammen vom Anbieter.

 api.cdp.coinbase.com 2026-10-31
Usage Verified
3 calls / 3 unique payers in the last 30 days
Evidence

Source-reported usage from Coinbase x402 Bazaar, read on 2026-10-31. Letzter Aufruf laut Quelle: 2026-10-26T19:23:50.765Z. Aufrufe sind kein Umsatz.

 api.cdp.coinbase.com 2026-10-31

Endpoint checks

We have not called this endpoint yet. Until we do, everything above is what the source published — no more.

Tags

Bitcoin Hash Timestamp Proof Of Existence Opentimestamps
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