Your AI worked. Show me the receipt. Every autonomous action iTechSmart takes produces a SHA-256, Ed25519-signed, Bitcoin-anchored record — proof, not a promise.
How a ProofLink receipt is sealed — from action to independent verification.
A receipt is to an AI action what a payment receipt is to a transaction: a compact, signed record that it happened, when, and with what result — that a third party can check. A ProofLink receipt captures the detection, the decision and its rationale, the action taken, and the verified outcome, then hashes and signs the whole thing and anchors it to Bitcoin. The difference from a log is the difference from a promise: a receipt can be verified by anyone, and it can't be quietly rewritten.
The action & rationale
What the system did and why — the decision context, not just a command string.
SHA-256 hash + chain link
A cryptographic fingerprint of the record, chained to the previous receipt so tampering is visible.
Ed25519 signature
Binds the receipt to the system that produced it, so provenance is cryptographic, not asserted.
Bitcoin anchor
An OpenTimestamps attestation fixing the receipt in time, independent of iTechSmart.
0+
Receipts publicly verifiable
Open ledger, open verifier
SHA-0
Hash-chained
Ed25519-signed, SCITT-compatible
Bitcoin
Anchor of record
OpenTimestamps attestation
Public
No account to verify
verify.itechsmart.dev
A signed, tamper-evident record proving what an AI system did, when, and with what verified result. iTechSmart's are called ProofLink receipts and are publicly verifiable at verify.itechsmart.dev.
- receipt
- 76a7d0bee971496c
- action
- HUMAN-APPROVED restart_container → ok
- actor
- uaio-twin-service
- timestamp
- 2026-07-09T12:51:42Z
- chain_pos
- #98234 · prev fa288c06…
- hash
- 2d23832d…b749d
- sealed
- SHA-256 · Ed25519 · OTS→Bitcoin
Proof beats promises with every stakeholder that matters — auditors, regulators, and customers. Verify a live receipt or start a free Pulse scan.
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