Contract reads

Read-only contract calls are the most direct way to inspect current PressChain state. They require no signer and are suitable for public pages, backend verification, server rendering and indexer reconciliation.

Evidence reads

A minimal ABI can include only the functions a feature needs:

const evidenceAbi = [
  "function getEvidenceIds(bytes32 capsuleId) view returns (uint256[])",
  "function evidenceCountByCapsuleId(bytes32 capsuleId) view returns (uint256)",
  "function getEvidenceTally(uint256 evidenceId) view returns (tuple(uint256 supportCount,uint256 rejectCount,uint256 participationCount,uint8 status,bool finalized))",
  "function getEvidenceVote(uint256 evidenceId,address voter) view returns (tuple(bool exists,bool support,uint64 votedAt))"
];

These functions are present in CapsuleEvidenceRegistryV3.

Contributor reads

const contributorAbi = [
  "function getContributorIds(bytes32 capsuleId) view returns (uint256[])",
  "function contributorCountByCapsuleId(bytes32 capsuleId) view returns (uint256)",
  "function isCapsuleContributor(bytes32 capsuleId,address wallet) view returns (bool)",
  "function activeShareBpsByCapsuleId(bytes32 capsuleId) view returns (uint256)"
];

These functions are useful both for presentation and for transaction preflight.

Read with ethers

import { Contract, JsonRpcProvider } from "ethers";

const provider = new JsonRpcProvider("https://rpc.presschain.io", 77117002);
const evidence = new Contract(EVIDENCE_ADDRESS, evidenceAbi, provider);

const ids = await evidence.getEvidenceIds(capsuleId);

Load EVIDENCE_ADDRESS from the approved deployment manifest for the current environment. Do not copy an address from an old script or archived configuration.

Pin a block for consistent exports

If several related reads must represent exactly one chain state, first resolve a block and execute all reads against that block tag. This is useful for audit exports or reproducible reports. For ordinary interactive pages, latest is usually appropriate.

Decode reverts

View calls can revert for missing or invalid records. When the ABI includes custom errors, decode them. The evidence registry defines errors such as EvidenceMissing(uint256) and CapsuleMissing(bytes32). A missing record should render as a domain-specific not-found state rather than a generic “RPC unavailable” message.

Cache based on mutability

Immutable historical data can be cached aggressively. Current active flags, open tallies and role state require shorter caching or event-driven invalidation. Do not cache a tally forever just because the underlying evidence artifact is immutable.

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Contract Reads

Contract reads

Evidence reads

Contributor reads

Read with ethers

Pin a block for consistent exports

Decode reverts

Cache based on mutability

​Contract reads

​Evidence reads

​Contributor reads

​Read with ethers

​Pin a block for consistent exports

​Decode reverts

​Cache based on mutability

Contract reads

Evidence reads

Contributor reads

Read with ethers

Pin a block for consistent exports

Decode reverts

Cache based on mutability