no the pyramid scheme is a reference to the hypertree structure that SPHINCS+ uses to embed lots of signatures under a single pubkey
You're saying large signature sizes would make it into a pyramid scheme, since effective block size would be greatly reduced? Have you looked into ZKP signature aggregation? https://eprint.iacr.org/2021/1048
no the pyramid scheme is a reference to the hypertree structure that SPHINCS+ uses to embed lots of signatures under a single pubkey
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