Standards
Blockchain anchoring
Publishing the cryptographic hash of an off-chain record on a public blockchain — proving the record existed unaltered at that point in time.
Instead of writing a full DPP, certificate or event to chain, anchoring writes only its hash. Anyone holding the original document can re-hash it and check it against the on-chain entry to confirm it hasn't been changed since the anchor was made.
Anchoring is the pragmatic middle ground for connected products: tamper-evident, regulator-friendly, low gas cost, privacy-preserving — and doesn't bind the brand to a single chain or wallet ecosystem.