Open Timestamps - NADO 16
from Bitcoin, Explained — The Technical Side of Bitcoin
In this episode of The Van Wirdum Sjorsnado, Aaron and Sjors discuss Open Timestamps, a Bitcoin-based time stamping project by applied cryptography consultant and former Bitcoin Core contributor Peter Todd. Open Timestamps leverages the security of the Bitcoin blockchain to timestamp any type of data, allowing for irrefutable proof that that data existed at a particular point in time. Chapters 00:00:00 OpenTimestamps and proof of prior existence 00:03:27 Document hashes and SHA256 00:05:54 Merkle trees and compact blockchain commitments 00:08:45 Calendar servers and collecting timestamp proofs 00:14:06 Verifying proofs with a Bitcoin node 00:15:42 Email signatures and timestamped signing keys 00:18:36 What timestamps cannot prove 00:23:18 Git history, the Genesis block and fraud limits 00:27:15 Haber, Stornetta and the roots of Bitcoin timestamping Support the Show! Follow Bitcoin Magazine on Twitter @BitcoinMagazine Follow Aaron van Wirdum @AaronvanW Follow Sjors Provoost @provoost Music: Song Title: Segwit Sounds By: The NakamoTones Album: Citadel Music Produced by: Bitcoin Audio
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Chapters
- 0:00 OpenTimestamps and proof of prior existence
- 3:27 Document hashes and SHA256
- 5:54 Merkle trees and compact blockchain commitments
- 8:45 Calendar servers and collecting timestamp proofs
- 14:06 Verifying proofs with a Bitcoin node
- 15:42 Email signatures and timestamped signing keys
- 18:36 What timestamps cannot prove
- 23:18 Git history, the Genesis block and fraud limits
- 27:15 Haber, Stornetta and the roots of Bitcoin timestamping
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