Many or most -- AFAICT -- big custodians who are likely using actually-physical-hardware-based HSMs use legacy addresses rather than HD wallets. Possibly there exists already battle-tested software that is shared or shopped around in this sphere.
Its just weird to me that they wouldn't use the most economically incentivized address type. Do you think they're using Shamir secret sharing too? You think ANY fucking custodian out there actually follows the glacier protocol?
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Its just weird to me that they wouldn't use the most economically incentivized address type.
When you're holding $500 million spending even $500 on transaction fees doesn't matter.
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