a16z: Crypto Applications

2 Bitcoin is a protocol. Payments are now packets. Bitcoin and Ethereum are literally protocols in that one can open up Wireshark and see the raw packets that update the underlying blockchains. It's fully packet-driven transmission of value without reference to a bank. Ⓒ2020 Andreessen Horowitz. All rights reserved worldwide. wireshark.pcap [Wireshark 1.11.2 (SVN Rev 53411 from/trunk)] File Edit View Go Capture Analyze Statistics Telephony Tools Internals Help Ⓡ O BE Filter: Payload Length: 37 Payload checksum: 0x3187a4cf Inventory message Count: 1 Expression... Clear Apply Save Frame 132214: 115 bytes on wire (920 bits), 115 bytes captured (920 bits) Ethernet II, Src: Ciscocon_fa:a4:be (c8:d7:19:fa:a4:be), Dst: Wistron_bf:c9:15 (00:1d:72:bf:c9:15) Internet Protocol Version 4, Src: 97.88.151.164 (97.88.151.164), Dst: 192.168.2.102 (192.168.2.102) Transmission Control Protocol, Src Port: 8333 (8333), Dst Port: 57853 (57853), Seq: 17822, Ack: 357, Len: 61 Bitcoin protocol Packet magic: 0xf9beb4d9 Command name: inv B Inventory vector Type: MSG_BLOCK (2) Data hash: ee19223c36353e3bda42e796e7ec98034105c4b86e1d7ba2... 0000 00 1d 72 bf c9 15 c8 d7 0010 00 65 1f el 40 00 2b 06 0020 02 66 20 8d el fd 4f 99 0030 00 ed 18 6b 00 00 f9 be 0040 00 00 00 00 00 00 25 00 0050 00 00 00 ee 19 22 3c 36 0060 ec 98 03 41 05 c4 b8 6e 0070 00 00 00 Bitcoin protocol (bitcoin), 61 bytes 111 19 fa a4 be 08 00 45 00 73 a7 61 58 97 a4 c0 a8 e9 4c 92 b0 72 f3 50 18 b4 d9 69 6e 76 00 00 00 00 00 31 87 a4 cf 01 02 35 3e 3b da 42 e7 96 e7 1d 7b a2 01 00 00 00 00 ..r..... ......E. .e..@.+. s.ax.... .f ...0. .L..r.P. inv... 5> ;.B... Packets: 133463 Displayed: 133463 (100.0%) O Profile: Default O X a16z

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