Stored at 498 × 137 px · shown at 1.1× Written to the chain on 13 May 2011, block 123,573.
One of the earliest images ever put on the chain, from May 2011 — an 8,776-byte JPEG of the Bitcoin logo, split across two transactions and wrapped in yEnc, the encoding Usenet used for posting binaries into text-only newsgroups. The first transaction opens with the yEnc header '=ybegin line=128 size=8776 name=bitcoin.jpg' and the second closes it with a CRC32 checksum, so the file announces its own name and size the way a Usenet post would.
A normal pay-to-public-key-hash output contains a 20-byte public-key hash. A data uploader can put arbitrary 20-byte chunks in that field instead. To the network it looks like many ordinary-looking outputs, but the “addresses” are fake because nobody knows a private key whose public key hashes to those bytes.
More about P2FKHEvery byte shown here was read from these transactions. Open one in a block explorer to check it yourself.
