Episode notes
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
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Music:
Song Title: Segwit Sounds
By: The NakamoTones
Album: Citadel Music
Produced by: Bitcoin Audio
