Observation 14 — April 2026MMXXVI

The Basquiat you are
about to consign
spent four years unaccounted for
between 2003 and 2007.

Provenio surfaced it before the client did.

For the auction specialists, insurance underwriters, curators, and collectors who cannot afford to miss what the catalogue raisonné didn’t say — Provenio is the provenance and market intelligence layer that lives one call away.

01Custody gaps in Picasso works sold 1940 — 194802Comparable Vermeers realised at evening sale, last 36 months03Attribution changes on contested Rembrandts, post-2015


§ 02 — Comparable SalesLEDGER · VOL. XI

Six decades of comparable sales,
pulled live against the market.

Every row is a cited transaction. Custody gaps, attribution changes, and price-memory inflections are surfaced in-line — no separate report, no intermediary. Row 31 expanded below as a worked example.

Comparable sales — live registrypulled 22.IV.2026 · 14:08 UTC · 6 of 214
Sort: chronological
04
2011
Vermeer, J.
Study head of a young woman
Christie's, NY
$24.4 M
$20 – 30 M
+6%
17
2016
Rembrandt
Portrait of a man, half-length
Sotheby's, London
$11.8 M
$10 – 15 M
–3%
22
2018
Poussin, N.
Bacchanal before a term
Phillips, NY
$7.1 M
$6 – 9 M
+2%
31
2023
Basquiat, J-M.
Untitled (Boxer)
Christie's, NY
$85 – 110 M
Q4
Provenance chain · lot 31
1982
Studio of the artist, New York
1984
Mary Boone Gallery, New York
1988
Private collection, Zurich — acquired from above
2003–2007
Custody unresolved · export licence on record
2017
Post-war evening sale, lot 18 — hammered $22.4M
2024
Present consignor — to appear
Reception arc
Rehabilitation phase, 2017 — 2024. Price memory: 1.00× at 1984 consignment, 14.2× at 2007 re-entry, 38.6× at present estimate midpoint.
19842024
49
2024
Hokusai, K.
Great Wave, posthumous impression
Bonhams, London
$1.4 M
$1.1 – 1.6 M
+1%
66
2024
Picasso, P.
Femme assise au chapeau
Christie's, Paris
$5.9 M
$4.2 – 6.8 M
+4%
verified
pending / to appear
custody gap
§ 03 — On the Missing YearsESSAY · 1,240 WORDS · C. HERRERA

Every catalogue raisonné is a
confession of what the market
agreed to forget.

There is no neutral record of a painting. Only a sequence of rooms it has stood in, and the silences between them. Provenio is the first intelligence layer that treats the silences as data.

The evening sale is not where provenance is tested. It is where provenance is ratified. By the time the hammer falls, a hundred small compromises have already been written into the lot note — a dealer’s assurance here, a missing export certificate there, a widow’s recollection standing in for a bill of sale. What Provenio does, before the catalogue is printed and before the underwriter signs, is read the record with the skepticism the record itself has quietly refused.

In the case of Basquiat’s Untitled (Boxer), a painting that is, by any reasonable account, one of the artist’s most frequently reproduced and least legally contested works, the canonical provenance contains a four-year aperture between 2003 and 2007. No export licence was flagged. No insurance claim was filed. The auction notes call this period, as they almost always do, “private collection.” The language is anodyne, but the convention is an editorial one, not a legal one, and every title examiner knows the difference.

What changed, for us, was not the availability of the records — the customs filings, the shipping manifests, the insurance schedules all existed — but the cost of correlating them. For a human specialist, the work of reconciling a single lot against the Getty Provenance Index, Wikidata, Knoedler’s stock books, and the raw customs output of three jurisdictions is a half-week of focused time. At evening-sale cadence, with two hundred lots a catalogue and four catalogues a year, the honest answer has always been: we don’t. We sample.

Provenio inverts the cadence. A natural-language query — “Custody gaps in Basquiat works sold between 2003 and 2010” — is resolved against 282,731 cross-indexed records in under four seconds. The model does not invent a conclusion. It surfaces the documentary evidence it found, and the evidence it could not find, and it tells you which is which.

Every silence in the record is priced. Provenio is the first instrument that lets the specialist read the price.
— C. Herrera, Head of Provenance Research

The output is not a verdict. It is a position — a disciplined summary of what the union of the record supports, what it contradicts, and what no source in the index has ever addressed. The specialist still decides. The difference is that she decides with the record assembled, and with the gaps named, before she picks up the phone.

i.
Getty Provenance Index, v.2024.3 — 1,112,480 sale records, 1650 present.
ii.
Knoedler & Co. stock books, 1863 — 1971, digitised via the Frick Art Reference Library.
iii.
Wikidata / Structured Data on Commons, queried via SPARQL federation.
iv.
Customs & shipping manifests: US-CBP, HM Revenue, Dutch NMB, Swiss Oberzolldirektion.
PROVENIO — OBSERVATION 14— iii —
§ 04 — Standing InstructionsFOUR SPECIMENS

The question is never “is this working.”
It is always: what, precisely, is it being asked.

Four standing instructions, pulled verbatim from client logs. Each card shows the query a professional actually issues, and the outcome it produced in the same working week.

SPECIMEN · 01
specialist
Auction Specialist
Evening sale · Post-war & Contemporary
Verbatim instruction
Flag every custody gap over 12 months in the catalogue before print; show me which lots the consignor has not addressed.
Outcome · same working week

Catalogue cleared against 214 comparable lots; three custody gaps surfaced; one withdrawn before printing.

SPECIMEN · 02
underwriter
Insurance Underwriter
Fine art · primary market
Verbatim instruction
Given this schedule of 38 works, surface every attribution change or title dispute in the last fifteen years, cited.
Outcome · same working week

Schedule re-rated; two works moved to contested tier; one excluded pending declaration.

SPECIMEN · 03
curator
Museum Curator
Acquisitions committee
Verbatim instruction
Establish whether the proposed gift has ever appeared in a restitution claim filed post-1998, in any jurisdiction.
Outcome · same working week

Clean record established against Claims Resolution Tribunal & HEAR Act filings; acquisition approved.

SPECIMEN · 04
collector
Private Collector
Advised purchase · $5 M+
Verbatim instruction
Compare this Vermeer against every priced Vermeer sold at evening sale in the last thirty-six months, hammer vs. low estimate.
Outcome · same working week

Comparable set of four; price memory modelled; bid ceiling set one standard deviation above mean hammer.

§ 05 — IntegrationMODEL CONTEXT PROTOCOL · OPEN STANDARD

It lives one call away
from the assistant you already use.

Provenio exposes its research index as a set of typed tools over the Model Context Protocol. Claude and ChatGPT invoke those tools directly. No data leaves your workspace. No separate UI to learn.

On MCP

The Model Context Protocol is an open standard for giving assistants access to structured tools — the same way a browser gives a human access to a webpage.

For you, this means: there is no Provenio app to open. You keep working inside Claude, ChatGPT, or a team notebook. When a question requires provenance, the assistant reaches into Provenio, cites the records, and returns the answer in line.

Every call is signed, rate-limited, and logged against your account. Your queries never train a public model.

Transport
stdiolocal, desktopHTTP / SSEhosted, teamsAuthOAuth 2.1 · signedModelClaude · ChatGPT · any MCP client
Figure I — Call Path
Specialist
“Custody gaps in Basquiat …”
human
natural language
Assistant
Claude · ChatGPT
assistant
MCP tool call · signed
Provenio MCP Server
search_provenance(…)
server
federated query
Sources
Getty · Wikidata · Knoedler · Customs
sources
Median latency · 3.8sSources cited · always
Tool manifest5 OF 15
search_artistsv0.3.2
Shortlist person nodes by name/nationality/era.
get_artworkv0.3.2
Composite: iconography + custody + polity + transactions.
search_auction_historyv0.3.2
Transaction-level prices with P25/50/75 percentile summary.
get_provenance_chainv0.3.2
Full ownership chain with verification state per hop.
query_market_summaryv0.3.2
Artist market rollup joined with reception and polity.
Open the full manifest →
claude_desktop_config.json  ·  or equivalent
{
  "mcpServers": {
    "provenio": {
      "type": "http",
      "url": "https://provenio.art/api/mcp"
    }
  }
}
§ 06 — SubscriptionACCOUNT BOOK · MMXXVI

Free for the research.
Paid for the workflow.

Provenio’s data layer costs us fractions of a cent per query. That economy passes to you.

Entry · 01✦ Start Here
Free
For the research — forever, no card required
$0forever
no credit card
·500 queries / day · anonymous IP
·2,000 queries / day · with email
·All 15 MCP tools
·24-month query history
·Single seat
·Citations on every call
Entry · 02✦ Most Subscribed
Pro
For the working specialist — the obvious upgrade
$19/ mo
billed annually · $15 / mo
list · $29 / mo billed monthly
·Unlimited queries · soft cap 50k / mo
·Priority routing · sub-2s median
·BYOK adapters · Artsy, Artnet, Art Market API
·Full 101,114 transaction records · live
·Email support · 24h response
·Everything in Free
Entry · 03
Team
For a desk at an auction house, gallery, or insurer
$99/ mo
5 seats · + $19 per seat
list · billed annually · seat-based
·Everything in Pro
·Shared workspace · shared query history
·SSO · Google / Microsoft
·Contractual audit log · 7-year retention
·Role-based access · specialist / principal
·Named client partner · quarterly review
Entry · 04
Institutional
For museums, trusts, and sovereign archives
By arrangement
annual contract · bespoke
·Everything in Team
·Custom source ingestion · your private archives
·On-premise MCP server · air-gapped available
·Named model host · isolated inference
·Data residency · US · EU · CH
·SOC-2 Type II audit rights
·Dedicated research fellow
All plans include full citations on every call. Always free for academic researchers and journalists with a verified credential.
USD · VAT as applicable
§ 07 — Queries AnticipatedEIGHT ENTRIES

The questions we have already been asked.

An index of the concerns most frequently raised by our first fifty institutional clients. The first three are expanded below; the remainder are available on demand.

It does not replace them. It indexes across them. A catalogue raisonné is a curated, single-source authority on one artist; the Getty Provenance Index is a structured record of sales. Provenio federates both, plus customs filings, insurance schedules, gallery stock books, and restitution databases, and lets a specialist ask a question that spans all of them in one call.

Every response is a retrieval answer, not a generated one. The MCP server returns the source rows the model consulted and flags the rows it could not find. If the record has a gap, the answer names the gap instead of filling it. Nothing in the response is inferred without citation.

Yes to all three. Provenio is delivered as an MCP server, which is an open standard. Any compliant client — Claude Desktop, ChatGPT with MCP enabled, or an in-house assistant — can install the server and invoke its tools. The configuration snippet in § 05 works in all MCP clients.

No. Queries are signed against your account, logged for your audit trail, and never enter any training corpus. Institutional tier includes a named model host with isolated inference and on-premise options.

We do not ingest paywalled auction previews, unauthenticated social media, or unverified press reports. When a query intersects an excluded source, the answer says so and suggests a manual research path. The exclusion list is published and revised quarterly.

Both are returned. The response marks the disagreement explicitly, identifies the more recent filing, and cites both in full. Provenio does not arbitrate disputed provenance; it surfaces the dispute so the specialist can.

Auction records and customs filings are ingested nightly. Restitution databases are refreshed on the publishing jurisdiction's cadence (typically weekly). Private archive ingestion, on Institutional tier, runs to your own schedule.

Individual and Practice tiers include a 30-day paid pilot; unused fees are credited against the first annual invoice. Institutional engagements begin with a scoped 60-day study before contract.

If your question is not above
Write to the desk of the head of research.
Answered in the same working day, by a named human.
research@provenio.art