Bedrock
Bedrock is a unobtainable block that cannot be broken or obtained in survival.
Location
I found only 2 near spawn.
First: X: 253, Y: 266 Z: -70
Second: X: 251, Y: 266, Z: -71
How was it obtained?
JakePlaque obtained it by begging K7rau (as jake said, kurau was high on weed, lmfao) and placed it here.
Extra info
Theres end portal frames nearby too.
K7rau placed them with /setblock. He used that same method to place end portal frames, end portal, end gateways, nether portals, and more.