Chainlink PoR solves the narrow case of attesting to reserves backing tokenized assets. H33-74 solves the broader case of producing chain-portable evidence for any operational event, including reserve attestations.
Chainlink Proof of Reserve uses Chainlink's decentralized oracle network to publish on-chain attestations of off-chain reserves backing tokenized assets (BTC-pegged tokens, stablecoins, RWA tokens). PoR's design center is letting smart contracts and observers verify on-chain that an off-chain reserve exists, typically through a periodic publish cycle backed by attested data from auditor APIs or custody platforms.
Both projects let third parties verify off-chain state. Both produce on-chain anchors for off-chain facts. Both target enterprise and institutional use cases.
Chainlink Proof of Reserve is great when the sole operational concern is making off-chain reserve backing verifiable to on-chain smart contracts and observers, and when the operator is comfortable with Chainlink network dependency.
H33-74 is great when reserve attestation is one of many operational events that need cryptographic evidence (the others being approvals, transfers, compliance checks, AI decisions, governance actions). When per-event granularity matters. When the evidence needs to survive Chainlink and any host chain.
Chain portability separates evidence from the infrastructure that produced it.
Chain Portability What Gets Preserved