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Belief Index levels are not computed from hypothetical baskets. Every series is physically replicated in actual constituent positions held on a public blockchain, and anyone can independently verify that those positions exist – without relying on Belief Systems’ reporting. This is a discipline no paper benchmark can offer: a traditional index holds nothing, and even a fund tracking one proves its holdings through custodian statements you cannot inspect. Here, the holdings sit on a public blockchain anyone can query. This page explains what can be verified, why it matters, and the concept of reconciliation.

Why On-Chain Verification Matters

In traditional finance, confirming that a portfolio’s assets exist means relying on custodian statements and auditor reports – produced periodically (often quarterly) and requiring trust in the custodian and auditor. With blockchain-based custody, verification is:
  • Real-time – Balances can be checked at any time, not just at reporting periods
  • Independent – Anyone can query the blockchain directly; no need to request statements
  • Immutable – Transaction history cannot be altered after the fact
  • Public – The same data is visible to all parties; no information asymmetry
This does not eliminate all trust requirements (see Limitations below), but it provides a layer of transparency that is simply not available with traditional custody arrangements.
Why does an index provider hold constituents at all? Two reasons, disclosed plainly: physical replication is the strongest possible proof that a published level corresponds to real, priceable holdings – and a small private Alpha Program holds interests linked to certain series, so the positions backing those interests must actually exist. See Disclosures.

What Can Be Verified

Because all assets are held on the Polygon blockchain, the following are publicly verifiable:

The Reconciliation Concept

Belief Systems maintains an internal ledger that records all positions and cash balances. This internal ledger should agree with what is observable on-chain. Reconciliation is the process of comparing the two:
1

Internal ledger state

The system records what it believes it holds: which positions, in what quantities, with what cash balances. This is the data used for NAV computation and index publication.
2

On-chain state

The Polygon blockchain records what the custody wallet actually holds: the real token balances and pUSD amounts, as verified by the blockchain’s consensus mechanism.
3

Comparison

If the internal ledger and on-chain state agree, the system’s accounting is verified. If they disagree, there is a discrepancy that needs investigation.
This is conceptually identical to how traditional fund administrators reconcile a fund’s internal books against custodian statements. The difference is that the “custodian statement” is a public blockchain that anyone can read – not a private document sent quarterly by a bank.

Asset-Based Valuation

Belief Index values series holdings from actual on-chain token balances, not just theoretical index weights. This means:
  • Position values are based on real holdings verified on the blockchain
  • Each NAV computation records whether it used on-chain data or a theoretical fallback
  • Anyone can cross-reference the reported position sizes with on-chain balances
For each prediction market position in a series:
  1. The system queries the custody wallet’s balance of that specific outcome token on-chain
  2. The token balance is multiplied by the current midprice to determine position value
  3. All position values are summed to produce the series’ position value
This approach ensures that valuations reflect what the custody wallet actually holds, not what the system intended to hold. If there is a discrepancy between intended and actual positions (e.g., due to a failed trade), the valuation will reflect the actual state. (Within the private Alpha Program, the same position value feeds participants’ NAV per Share, together with custody cash and fees.)

What This Means for Anyone Using the Data

  • Constituents are real. The outcome tokens behind every published index level exist on-chain and can be independently confirmed by querying the Polygon blockchain.
  • No hidden leverage. The actual on-chain balances determine position value, not a theoretical model or internal estimate.
  • Auditable history. Every acquisition and disposition of positions is recorded immutably on the blockchain. The full transaction history is available to anyone.
  • Continuous verification. Unlike quarterly audits, on-chain data can be checked at any time.

Limitations

On-chain verification confirms that assets exist in the custody wallet. It does not, by itself, confirm:
  • Series attribution – That specific assets are correctly allocated to a specific series (this is an internal ledger matter, not visible on-chain)
  • NAV correctness – That the NAV computation methodology was applied correctly (requires verifying the computation, not just the holdings; see NAV Methodology)
  • Program accounting – That Alpha Program share records are correctly maintained (internal ledger)
  • Operational controls – That custody governance and withdrawal safeguards are functioning as described
  • Future solvency – That current holdings will be sufficient to meet future obligations
On-chain transparency is one layer of trust. Combined with the published methodology, disclosed operational model, and internal reconciliation checks, it provides a comprehensive picture – but it is not a substitute for independent due diligence.
The most powerful verification combines two checks: (1) confirming that the custody wallet holds the positions claimed, and (2) verifying the NAV computation by applying the published methodology to current market prices. Together, these validate both the existence and valuation of the underlying assets.

NAV Methodology

How to independently verify NAV calculations.

Asset Security

How assets are held and secured.

Worked Examples

Step-by-step NAV calculation walkthroughs.

Risk Factors

Full discussion of custody and verification limitations.