A block explorer is the tool people open when they need to confirm something on chain, and that is the whole case for advertising on one. The reader is technical, mid-transaction, and looking at an address, a token or a hash — a state of attention almost nothing else on this marketplace reaches, and one that rewards a recognisable name with one concrete reason to click over any kind of argument. Formats are tightly constrained: a search box slot, a button, a line of header text, a 20-pixel icon. Each explorer serves one chain, so the decision between them is almost entirely about where your users already are rather than what you can afford — several are priced identically.
Almost none of them publish what their advertising costs on their own sites. Every price here is the price.
| 22 placements priced in EUR | €2,930 to €28,080. These are ad placements, priced against contracted impressions rather than the host site’s traffic, so there is no single cost per thousand to rank them by — each page states its own. |
A text placement on Solscan and the cheapest way onto a seven-million-visitor explorer. The entry point for testing whether Solana inventory works for you.
A sponsored line of text at the very top of Etherscan pages, bought by impressions rather than by the week. Around 280,000 geotargeted impressions at a reported 0.14–0.24% click-through.
A sponsored line of text in the Bscscan header, priced on CPM rather than as a flat flight — the cheapest entry to BNB Chain inventory here.
A placement in the Solscan search field — the single most-used element on the Solana explorer, in front of seven million monthly visitors. Sold on CPM.
One week in the Etherscan search box — the single most-used element on the site. Reports roughly 2,100 clicks per week, one of the few placements here quoted in clicks rather than impressions.
A sponsored line in the Basescan header, priced on CPM — the cheapest way to test whether Base users respond to your offer.
A sponsored line in the Polygonscan header, priced on CPM — the cheapest way to test whether Polygon users respond to your offer.
A month on the block explorer people open to check a transaction. Appears on transaction, token and address pages — the moment someone is looking at on-chain activity.
A placement in the Bscscan search field — the box every BNB Chain lookup starts in, on an explorer with 2.5 million monthly visitors.
The button position on Solscan and the most expensive placement in this catalogue. Booked until 1 October 2026.
A placement in the Basescan search field — the explorer for Base, the chain that brought the largest wave of first-time on-chain users.
A placement in Blockchair’s universal search bar — the box people use to look up an address, a transaction or a block across more than a dozen chains.
The button position on Bscscan — a persistent slot on the BNB Chain explorer, sold at a flat price for the flight.
A placement in the Polygonscan search field, reaching a million monthly visitors at the moment they look up a Polygon transaction.
The side button position on Blockchair, and the unit the supplier marks as its most popular on this site. Currently booked.
The button position on Basescan at €18,720 — persistent presence on the Base explorer for the length of the flight.
The top button position on Blockchair — above the content, seen before anything else on the page. The most prominent slot the site sells that is currently available.
The button position on Polygonscan at €18,720 — persistent presence on the Polygon explorer rather than a single moment of intent.
The most expensive thing Blockchair sells: a native text unit set inside the page content rather than in a banner position, so it reads as part of the page.
A native text placement on Cardanoscan at €3,090 — the cheapest of the site’s three units, and the one that reads as part of the page.
The banner spot on Cardanoscan at €3,510 — the only Cardano inventory on this marketplace, reaching an unusually loyal 130,000 monthly visitors.
The button spot on Cardanoscan at €3,510, the same price as the banner — a persistent position rather than a display unit.
Etherscan does not publish its prices; its own advertising page is a contact form. The Etherscan placements here show their prices on the page, along with the rotation, the position and what the publisher reports about performance.
The one your product is deployed on. Several are identically priced, so chain fit is the only sensible criterion — and a genuinely multi-chain product loses nothing by buying more than one, because the audiences barely overlap.
Very few publish anything. Where a figure exists, the product page quotes it; where it does not, the page says so rather than estimating on the publisher’s behalf.
