Weak blocks, or “near blocks” are not a new idea. In short, have miners propagate what amounts to mining shares over the p2p network, which allows PoW-backed sharing of data. Historical discussions of weak blocks centered around the blocksize and scaling debate, which means there was intense focus on reducing the marginal bytes sent per weak block to aid “gigameg blocks”. There was seemingly a lot of focus on creating DAGs, extra-consensus chains, and similar mechanisms for increasing...
