What Is an Attestation Ledger?
An attestation ledger is essentially a record used to prove that something, usually a financial transaction or a product’s authenticity, actually happened. Think of it as a verifiable trail of evidence, typically backed by receipts, invoices, or bank statements.
How Attestation ledgers work
Proof of transactions – Records payments, transfers, or receipts in a verifiable way.
Proof of commitments – Stores statements or agreements that can later be validated.
Blockchain-based systems – Many attestation ledgers use distributed ledger technology, making them tamper-resistant and publicly accessible. For example, a transaction ID can be checked against an attestation ledger to confirm its validity.
Device and security applications – systems like BOLOS (Blockchain Operating Ledger System)
use attestation ledgers to ensure devices and applications haven’t been altered, proving they are genuine and secure.
Benefits of Attestation ledgers
Trust and transparency – Creates a verifiable proof of events or agreements.
Security – Resistant to tampering when built on blockchain.
Auditability – Provides clear evidence trails for regulators, businesses, and users.
Versatility – Works for payments, product authenticity, digital security, and more.
The Bottom Line
An attestation ledger is all about trust and verification. Whether it’s confirming a financial transaction, validating a device, or proving that a contract was made, these ledgers create transparent, auditable records that third parties can rely on.

