I'm reading Comer's TCP/IP book, where (page 107 of the 4th edition, if you're interested) he states: <BR><BLOCKQUOTE class="ip_ubbcode_quote"><font size="-1">quote ...

Datagram has unveiled its Core Substrate, a fully operational, connectivity baselayer built specifically to power real-world applications and DePIN (Decentralized Physical Infrastructure Network) ...