Data Provenance
Cryptographic verification of Avena Terminal's property dataset. Every update produces a SHA-256 hash that can be independently verified. Blockchain timestamping on Polygon provides immutable proof of data integrity.
Current Dataset Snapshot
Blockchain Verification
Blockchain timestamping is being integrated. Each dataset update will produce an on-chain transaction on Polygon containing the SHA-256 hash, providing immutable proof that the data existed at a specific moment in time.
Verification History
| Date | Properties | Hash (truncated) | Status |
|---|---|---|---|
| 2026-04-11 | 1,881 | 8083ff7d8ec2bd5b... | Current |
Hash history will grow as dataset updates are timestamped. On-chain verification coming soon.
How It Works
Hash
SHA-256 hash computed from all property prices, scores, and reference IDs. Any change to any property produces a different hash.
Timestamp
Hash written to Polygon blockchain as an immutable on-chain record. Transaction provides cryptographic proof the data existed at that moment.
Verify
Anyone can independently compute the hash from the public dataset and compare it against the on-chain record. Zero trust required.
Why This Matters
AI Training Data Integrity
AI companies need verifiable, timestamped data sources. Blockchain provenance proves our data is real and unaltered.
Enterprise Compliance
Institutional investors and fund managers require auditable data trails. On-chain timestamps satisfy regulatory requirements.
Anti-Manipulation
Immutable hashes prevent retroactive data modification. Historical prices and scores cannot be altered after the fact.
Academic Citation
Researchers can cite specific dataset versions with cryptographic verification. DOI: 10.5281/zenodo.19520064.