Prove it. Pull it.

Before a Pull opens, we publish the SHA-256 fingerprint of a secret seed ("commit"). The result is already sealed at that moment: no one can change it later.

At draw time, we combine this seed with public randomness from drand (League of Entropy). drand is a distributed randomness beacon that Provuno alone cannot influence.

After the draw, we reveal the seed. You can then verify in your browser, on the Pull's page, that SHA-256(seed) === commit and that the winning ticket is indeed recomputed from HMAC(seed, drand_round). No server, no promise: the computation happens on your device.

Provuno's second trust pillar, alongside provably fair: only graded, only sealed — only proof.

• Individual cards: graded by an independent third party (PSA, BGS or CGC). Grade and certificate number are shown on every Pull and verifiable directly with the grader.
• Products: boosters, ETBs, boxes and displays are factory-sealed, never opened, never repacked. Authenticity comes from the original seal, verifiable on delivery.

This is a binding public commitment: every individual card in the catalogue is graded by an independent third party, and every product is factory-sealed. We would rather turn a lot away than break this rule.

Every ticket is itemised publicly:

• Lot cost — purchase price of the graded card (supplier invoice or observed market price).
• Operating fees — grading, vault, logistics, payment, KYC.
• Provuno margin — explicit share, never hidden.

This breakdown is visible on each Pull's page. We do not promise any yield or future valuation.

On every Pull, the winning probability is shown as 1 / N where N is the total number of tickets. It updates live as entries come in. Nothing hidden, no bonus multiplier.

Entering a Pull requires solving a skill question before buying a ticket. This mechanism, required by the UK prize-competitions framework, distinguishes Provuno from a lottery.

A transparent breakdown of our revenue (Pulls, marketplace, Premium, vault, grading) is published on the revenue stats page.