$BlindReceiptV1�nBlindReceiptV1�CBlindReceiptV1 {
version: u8 = 1
protocol: exact ASCII "hiverelay-blind-cell-v1" (23 bytes)
relayBinding: RelayResultBindingV1
slotCommitment: BLAKE2b-256(slot)
cellBlobHash: 32 bytes
allocationCommitment: 32 bytes
requestCommitment:32 bytes
sizeClass: u8
allocationEpoch:u32
leaseClass: u8
leaseEpoch: u32
stateRevision: u64
receiptEpoch: u32
requestNonce: 32 bytes
result: u8 // 1 STORED, 2 SERVED, 3 RENEWED, 4 DROPPED
signature: 64-byte Ed25519 signature over canonical domain-separated bytes
} RelayResultBindingV1