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Evidence

Provenance for blockchain data in enterprise reporting

A chain is a public record, which makes it easy to assume that any figure drawn from it is self-evidently true. It is not. The figure depends on which node answered, at which block, through which provider, with which labels applied. Provenance is the record of those four things beside the number, and without it a board report quotes a figure nobody can reproduce.

A short path through this page. Open each step to go deeper.

1The four things a chain figure needs
  • The source. Which chain, and which node or provider answered. Two providers can disagree about a pending transaction or a reorganized block.
  • The block or time. A balance without a block height is a balance at some unknown moment.
  • The derivation. A "treasury balance" is a sum over addresses. Which addresses, and who decided they belong to the treasury?
  • The label and its origin. "Exchange deposit address" is a claim made by someone on some date. The claim is only as good as the one who made it.
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EOS keeps these apart on purpose. Source data is what the provider returned, as returned. Inference, scenario, decision and outcome are kept apart from all three; an SI's inference is never shown as an observation.

3Why this matters beyond audit

When two teams disagree about a number, provenance turns an argument into a comparison: same chain, different block; same block, different address set; same address set, different provider. The disagreement is kept and settled by the person with authority, and the settlement is recorded. The reconciliation method depends on it.

4What EOS records, and what it does not claim

EOS records the source, the as-of, the derivation path and the label origin for every chain figure it shows, and it produces an evidence pack an auditor can verify offline. It does not claim to be a chain-analytics vendor; it reads from the providers you configure, and every label it uses names its source.

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