Guide
OpenTimestamps vs Hosted Proof Workflows
A decision guide comparing self-managed timestamp proofs with hosted verification and workflow layers.
Integrity and provenance guide June 6, 2026 For legal, product, and compliance teams
Integrity proof
Timestamp proofs that survive scrutiny
A plain-English guide to proof of existence, hash-based verification, Solana anchoring, and the operational choices around document integrity.
Featured guide
How to Prove Document Integrity on Solana
A practical guide to timestamping workflows, receipt handling, and verification patterns on Solana.
ProofTimestamp
More guides
Guide
How to Integrate Provncloud for Automated Solana Timestamping
A practical integration guide covering the Provncloud API — authentication, batch submission, proof verification, and production deployment patterns.
Guide
Document Timestamping API Comparison
A practical comparison of Provncloud, OpenTimestamps, and self-hosted timestamping approaches. Compare settlement network, integration model, verification, cost, batch support, and operational overhead.
ProofTimestamp
How the workflow works
Timestamp proofs are strongest when teams separate the document, the hash, the timestamp, and the verification record.
Hash the artifact
Create a digest of the document, dataset, release, or evidence package.
Anchor the digest
Submit the hash or commitment to a verifiable timestamping system.
Keep the receipt
Store the timestamp, transaction details, and verification metadata.
Verify later
Re-hash the original artifact and compare it against the recorded proof.
ProofTimestamp
Why teams use Solana
Solana can be useful for high-volume timestamping because transactions are fast and inexpensive compared with many older chains.
Low transaction cost
Useful when proofs need to happen frequently.
Public verification
Third parties can inspect on-chain data without trusting your internal system.
Operational tradeoffs
Teams still need reliable receipt storage and verification UX.
Not a truth machine
A timestamp proves existence of a hash, not accuracy of the underlying content.
ProofTimestamp
Use cases
The strongest use cases involve artifacts that may need to be independently verified later.
Document integrity, release provenance, evidence handling, and AI dataset lineage are all natural timestamping workflows.
Hosted services can add API access, receipt storage, team workflows, and verification endpoints around the raw proof.
Next step
Operationalize proof workflows with Provncloud
Open timestamping patterns are useful. Provncloud adds hosted APIs, receipt workflows, and verification endpoints for teams that need scale.
Sources
References and further reading
Solana transaction docs
Primary reference for Solana transaction behavior.
Solana accounts docs
Useful for understanding how state is represented.
OpenTimestamps
A well-known open timestamping alternative.