Universal Informatics snapshot timestamp

The RFC3161 response binds the SHA-256 of manifest.json at 2026-10-25 23:29:52 UTC.
The manifest binds every archived payload. Verify payload hashes before relying on this record.

Verify using OpenSSL and your independent trusted CA store:

openssl ts -verify -data manifest.json -in manifest.tsr -CAfile /path/to/trusted-ca-bundle.pem -untrusted timestamp-chain.pem
openssl ts -verify -queryfile manifest.tsq -in manifest.tsr -CAfile /path/to/trusted-ca-bundle.pem -untrusted timestamp-chain.pem

The provided certificate chain contains intermediates, not a substitute trust store.

OpenTimestamps: manifest.json.ots contains pending calendar attestations. Bitcoin confirmation is not yet verified. Retain the original manifest and proof, then use ots upgrade and ots verify when the Bitcoin attestation becomes available.

A timestamp records existence and integrity; it is not a legal ownership judgment or scientific validation.