It’s the estate library, or the collector who finally downsized, or the church basement cleared to the studs. Thousands of spines, most of them worth a dollar, one of them a signed first. Box-lot it all and you hand that first edition away for three bucks. Catalog every spine by hand and you’re typing till the next sale. And it came in on consignment — so there’s a seller waiting on a settlement statement that had better be right. Hammerwerks scans the barcode, keeps the good one in front of you, and settles the consignor clean.
Here’s the book squeeze: box-lot the whole library and you leave the good stuff on the table; catalog each spine by hand and you’re at it until the next sale. But most every spine since 1970 carries a barcode that already answers the boring questions. Hammerwerks reads it — and this is the part it’s actually built to speed up.
Continuous scan from your phone camera. Point at the back cover; half a second later the ISBN is read and Open Library returns title, author, publisher, year, subjects, and a cover. Fifteen seconds a book instead of ninety — that’s the whole difference between cataloging a library and box-lotting it.
You can’t scan ten thousand spines alone. Send a scoped, no-login capture link and a helper shoots lots straight into your workbench from their own phone — no seat to set up, no password to share — and you revoke it the moment the library’s catalogued.
The barcode gives you the facts; from your photos the AI drafts the description, category, and condition — each with a confidence score — and a second AI reviews before it reaches you. You approve every lot. It saves the typing, not the deciding.
Every box of dollar paperbacks might hide a signed first or a scarce printing. Miss it and you gave it away. Over-call it with a made-up estimate and a book buyer with a reference shelf catches the bluff in about four seconds. The catalog has to be fast enough to find the good one and honest enough to price it right.
ISBN, edition, printing, dust jacket present, binding condition, signed or inscribed, ex-library, subjects. The structured fields serious book buyers actually filter on — not a paragraph they have to read hoping the one detail that matters is buried in it.
On a common title with clean comps the AI offers a value range with a confidence score. On a first edition, or a thin market with nothing to compare, it says so — no estimate — instead of printing a fantasy number your buyers will laugh at. Pre-ISBN antiquarian stays a human call; it doesn’t hide behind a hallucination.
The lookup returns a cover image with most ISBNs, so your catalog page looks finished without you photographing every jacket. Your hero photo is the actual copy on the table — the real dust jacket, the real foxing, the signature — there for provenance.
Cataloging is the front of the job. The back of it is where the trust gets tested — the consignor who swears the commission was different, the payout you cut before the buyer’s check cleared, the books that won’t tie out come tax time. Hammerwerks carries the money from the signed agreement to the cut check, so none of it lands on you at 11 p.m.
The consignor signs the consignment agreement electronically and you countersign. The signed document is fingerprinted and the whole signing recorded — tamper-evident, so you can prove later that nothing changed, right down to the rate. And the settlement statement settles against that contract, so commission and fees can’t drift between the handshake and the check. (Provable, not a substitute for legal advice.)
When the statement’s ready, pay the consignor by check or electronically and record it. The rule Hammerwerks holds: it won’t let you pay out a lot before the buyer’s money for it is collected — so you’re never fronting a payout on an invoice that hasn’t cleared. Partial payments settle on what’s actually in, and each seller can have their own commission rate.
Every sale balances — money in from buyers equals what you paid consignors, plus your commission and premium, plus tax, plus what’s still owed. See how much consignor money you’re holding at a glance, export the whole ledger to a spreadsheet, and pull a per-consignor 1099 worksheet and a sales-tax report when the year closes. That’s a CSV, not a live QuickBooks sync — but it’s the shoebox, gone.
Manual cataloging. The barcode is roughly a post-1970 thing; antiquarian and pre-1970 books need a human eye anyway. Hammerwerks doesn’t try to auto-populate them, and it doesn’t hide behind an AI hallucination either — you catalog those the way you always have, just in the same workbench as the rest of the sale.
First edition, signed, and ex-library are lot-level fields you set on the individual book. The barcode scan gives you the structural facts; you add the collector-relevant ones. Read Barcode to lot in three seconds.
Yes — the field schema is per-tenant and configurable. Add fields for date, place, provenance, and dimensions; skip the ISBN field. Maps, ephemera, and archives run in the same sale as the trade books.
Yes, and you’ll want to. Box-lot the commons — “Box lot: 30 vintage mystery paperbacks,” one photo of the stack — and individually catalog the finds with the barcode-scan pass. One catalog, not two.
The agreement they signed. It’s tamper-evident — the signed document is fingerprinted and the signing recorded — so you can prove the copy they signed is the copy you settled against, and that nothing changed in between. The statement is computed straight off that contract, so the rate and fees can’t drift.
Honestly, not the way HiBid or Proxibid can — their registered-bidder pools are huge and ours is small. If raw reach is your whole game, they win it. What you get here is a bidder site branded on your own domain and a buyer list that stays yours — export it anytime — instead of quietly becoming the marketplace’s asset. Watch the 90-second demo.
Yes, if you’d rather talk to it than click it. Hammerwerks connects to ChatGPT, so you can catalog lots, check a settlement, and move the sale along by asking — handy when your hands are full of books.
No commission on the hammer, ever, and no per-bidder fee. You pay a flat monthly tier by how many lots you run — Solo $99 (200 lots), Growth $299 (1,000), Scale $799 (5,000), 50¢/lot above that — plus a one-time $499 setup that’s waived with a promo code. A big paper sale in the thousands of lots rides on Scale, and there’s never a cut of what the gavel brings.
The free ISBN lookup tool is right here if you want to test the underlying data first. Ask about Founding Customer terms on your intro call. 30-day money-back, full data export any time.
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