§ 01 — OVERVIEW · FBC/26A/Q2

One service. Verifiable custody of the documents that govern private-market exposure.

Three primitives, layered. The custodian holds the file. A public timestamp anchor proves when it was held. A unique transaction code returns the entire chain on demand.

01 / CUSTODY

Custody on deposit

Sponsors deposit Forward Purchase Agreements, wire receipts, pledge and security documents, and subscription records. Each document is SHA-256 hashed at the moment of deposit.

INPUT · 1 × FPA → sha256(5b4b07cbac3aa2d65fb5)
02 / ANCHOR

Public timestamp anchor

Every document hash is anchored to OpenTimestamps, a public timestamping service rooted in the Bitcoin blockchain. The anchor proves the document existed, unchanged, at the deposit moment — independently of Fund Base Camp.

ANCHOR · OpenTimestamps → bitcoin · ≥3 confirmations
03 / VERIFY

Code-based verification

Each investor and each sponsor receives a unique transaction code. The verification page returns the SPV, the documents in custody, their hashes, the timestamp anchor, and the date of the most recent independent attestation.

QUERY · FBC-26A-INV-0042 → VERIFIED ✓
§ 02 — VERIFICATION · FBC/PUB/FLOW

From code to confirmation. Under ten seconds.

Trust is not required. The hash can be independently confirmed by re-hashing any document you receive. The timestamp anchor can be independently confirmed against OpenTimestamps.

01

Receive your code

At subscription, your sponsor issues a Fund Base Camp transaction code. Format: FBC-[series]-INV-[ticket].

02

Open the verification page

Enter the code at fundbasecamp.com/verify. No account. No password. Anyone with the code can verify.

03

Read the custody record

See the SPV, the list of documents in custody, the SHA-256 hash of each one, the public timestamp anchor, the deposit date, and the date of the last independent attestation.

04

Verify independently

The timestamp anchor resolves against OpenTimestamps. The hash matches any document you receive. The receipt PDF includes everything needed to re-verify offline.

codeFBC-26A-INV-0042
spvLimen Markets Series 2026-A LLC
underlyingSpace Exploration Technologies Corp.

in custody3 documents (specimen)
Forward Purchase Agreement (specimen)
deposited 2026-06-10 14:35 UTC
sha2565b4b07cbac3aa2d65fb55d2e1ac9e278e724d4d1aec1593f7370fd430c7a25d5
Wire receipt (specimen)
deposited 2026-06-10 14:35 UTC
sha2563c5710868cd42fe19b7a8f497a7e4fadc3e2a9c492bc511918f1e772c6a9b8e4
Share pledge agreement (specimen)
deposited 2026-06-10 14:35 UTC
sha256f1c6e1eb937a331c376adf982e22ff06f41b299691fd4ff95b0ff1571888c9a7

anchorOpenTimestamps · Bitcoin · finalizing…
attestationFirst AUP — Q3 2026 · Lukas & Co. CPAs (scheduled)
STATUS · FBC/26A/INV/0042 IN CUSTODY
§ 03 — TRUST · FBC/SEC/STACK

Trust, layered. And independently checkable.

Four layers — cryptographic, transport, attestation, indemnification. Each layer is verifiable by a different external party. The combination is the credibility.

Layer 01 · Cryptographic

SHA-256 + OpenTimestamps

Every document is cryptographically hashed and timestamp-anchored to the Bitcoin blockchain via OpenTimestamps. Tamper-evidence is mathematical, not promised.

anchor · public chain · ≥3 confirmations
Layer 02 · Transport & Storage

AES-256 at rest, TLS 1.3 in transit

Document storage is encrypted at rest with KMS-managed keys; access is logged via CloudTrail. Transport is TLS 1.3. Bucket-level isolation per sponsor SPV.

AES-256-GCM · TLS 1.3 · per-SPV isolation
Layer 03 · Attestation

Annual AUP report — published

A licensed CPA firm runs Agreed-Upon Procedures over Fund Base Camp's records annually. The report is published openly at fundbasecamp.com/security.

CPA AUP · annual · publicly posted
Layer 04 · Insurance

E&O + fidelity bond — carriers disclosed

Professional errors-and-omissions insurance and a fidelity bond appropriate to the value of documents under custody. Carriers, limits, and certificates available on request.

E&O · crime · cyber · D&O
§ 04 — SPONSORS · FBC/PUB/FOR-SPONSORS

If you run an SPV, you have a custody problem.
We fix it.

Fund Base Camp is built for managers of private-market SPVs — pre-IPO marketplaces, secondary funds, venture syndicates, family-office vehicles. Drop documents in. Get a verification code out. Each of your investors gets independently verifiable proof of custody, without you building any of it. The legal scaffolding — custody services agreement, SOC 2 path, insurance disclosures — ships ready to go.

Talk to us
SHA-256 Hash function
used on every deposit
≥ 3 Bitcoin confirmations
before anchor is final
Annual Independent CPA
Agreed-Upon Procedures
$1–5M Coverage tiers · E&O,
crime, cyber, D&O
Last anchor submitting to calendars…
First AUP Q3 2026 · Lukas & Co. CPAs · scheduled
Records in custody FBC/26A · 3 specimen documents
Service status ● Operational