github.com/btcsuite/btcd@v0.24.0/wire/testdata (about) block-0000000000000000001602407ac49862a7bca9d00f7f402db20b7be2f5de59d2.blk block-00000000000000000021868c2cefc52a480d173c849412fe81c4e5ab806f94ab.blk megatx.bin.bz2