An interview with Peter Todd, Applied Cryptography Consultant (HCPP 2019)
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Peter Todd (Bitcoin developer) discusses Open Timestamps and Proof Marshall—protocols proving data existence and uniqueness using Bitcoin's blockchain and Merkle trees for scalable consensus. Bitcoin succeeds because small blocks let any node independently verify the entire ledger; Ethereum fails because terabyte-scale data makes independent verification impossible, hiding bugs through hard forks.

https://relay.towardsliberty.com/bd077f6ac435ce76ccd0d2a28a8d9a35b4b6996a4885dd93b01f292a8ab2494c.mp4