A radio telescope printout. One column reads 6, E, Q, U, J, 5, circled in red pen and annotated “OP_DARK?”.
CH 2 · 1420 MHz · Big Ear · 15 Aug 1977 · 72 sCH 2 · Bitcoin mainnet · block ———,——— · listening
A radio telescope printout. One column reads 6, E, Q, U, J, 5, circled in red pen and annotated “OP_DARK?”.