transferAndCallin 4 tokens in top 100, and yet not enough interest (e.g. from those token devs) to promote it. By contrast, the only ERC-777 token I found in Etherscan is https://etherscan.io/token/0x89Ab32156e46F46D02ade3FEcbe5Fc4243B9AAeD and it's not in top 100.
[owner1, owner2], [id1, id2], should it be a)
[balanceOf(owner1, id1), balanceOf(owner1, id2), ...]or b)
[balanceOf(owner1, id1), balanceOf(owner2, id1), ... ]? this underspec is unfortunate because all 4 ERC-1155 implementations I could find seem to implement the balanceOfBatch quite ... unintuitively :slight_smile:
balance for each (owner, id) pairand that's also how all the batch functions I have seen anywhere do work