Parameter

Definition

$O_i$

The i-th oracle

$p{k}_i$

The public key of the i-th oracle

$s{k}_i$

The private key of the i-th oracle

$m_i$

The query result returned by the i-th oracle

${\sigma }_i$

The signature of the i-th oracle

$I{D}_i$

The identification of the i-th oracle

R

The set of 2f + 1 messages received from the oracle smart contract

m

The request returned to the user’s smart contract

$D_k$

The set of identical results that is greater than or equal to f + 1

$\sigma$

The aggregate signature of all ${\sigma }_i$ in $D_k$

I

The set of all ${\sigma }_i$ in $D_k$