{0,0,ID{Hash:checksumToBytes(0xa3f5ab08),Next:1561651}},// Unsynced, last Frontier, Homestead, Tangerine, Spurious, Byzantium, Constantinople and first Petersburg block
{1561650,0,ID{Hash:checksumToBytes(0xa3f5ab08),Next:1561651}},// Last Petersburg block
{1561651,0,ID{Hash:checksumToBytes(0xc25efa5c),Next:4460644}},// First Istanbul block
{4460643,0,ID{Hash:checksumToBytes(0xc25efa5c),Next:4460644}},// Last Istanbul block
{4460644,0,ID{Hash:checksumToBytes(0x757a1c47),Next:5062605}},// First Berlin block
{5000000,0,ID{Hash:checksumToBytes(0x757a1c47),Next:5062605}},// Last Berlin block
{5062605,0,ID{Hash:checksumToBytes(0xB8C6299D),Next:0}},// First London block
{6000000,0,ID{Hash:checksumToBytes(0xB8C6299D),Next:0}},// Future London block
{0,0,ID{Hash:checksumToBytes(0xa3f5ab08),Next:1561651}},// Unsynced, last Frontier, Homestead, Tangerine, Spurious, Byzantium, Constantinople and first Petersburg block
{1561650,0,ID{Hash:checksumToBytes(0xa3f5ab08),Next:1561651}},// Last Petersburg block
{1561651,0,ID{Hash:checksumToBytes(0xc25efa5c),Next:4460644}},// First Istanbul block
{4460643,0,ID{Hash:checksumToBytes(0xc25efa5c),Next:4460644}},// Last Istanbul block
{4460644,0,ID{Hash:checksumToBytes(0x757a1c47),Next:5062605}},// First Berlin block
{5000000,0,ID{Hash:checksumToBytes(0x757a1c47),Next:5062605}},// Last Berlin block
{5062605,0,ID{Hash:checksumToBytes(0xB8C6299D),Next:1678832736}},// First London block
{6000000,1678832735,ID{Hash:checksumToBytes(0xB8C6299D),Next:1678832736}},// Last London block
{6000001,1678832736,ID{Hash:checksumToBytes(0xf9843abf),Next:0}},// First Shanghai block