Smallest GDAL compatible GeoPackage contest

gistfile1.txt

The purpose of this contest is to create the smallest possible file that is
recognized as a valid raster GeoPackage by GDAL.

The following rules must be followed:
- the file must be readable with "gdalinfo -checksum contest.gpkg" (exactly this commandline)
  where contest.gpkg is the candidate file.
- the above command must report that the driver used to open the file is the GeoPackage driver.
- the above command must report, without any displayed warning or error, at least one raster
  band and the checksum of the band(s)
- any GDAL version with GeoPackage raster support can be used (i.e. GDAL 2.0 or later) at the
  choice of the participant. The source code of the GDAL version must come unmodified from an
  official archive or the source control management from the GDAL project.
- no custom executable code must be run (no use of a custom GDAL plugin for example)
- any official unmodified version of libjpeg, libpng, zlib, libwebp, libsqlite3, compatible with GDAL,
  may be used at the choice of the participant.
- the participant agrees to share his file under the X/MIT license, public domain or any compatible license.
- the file must be smaller than 50000 bytes.
- the file must be emailed to <even.rouault at spatialys.com> before February 25th 2016, 17:00 UTC+01
  (during the OSGeo Paris Code Sprint 2016).
- the winner is the participant providing the smallest file.
- in case there are several winners with the above rule, the file that results to the
  smallest compressed file with "gzip -9" will be the winner.
- in case there are several winners with the above rule, the participant with the smallest
  sha256(YYYMMDD), where YYYYMMDD is his/her birth date, will be the winner (ASCII string comparison)

Notes:
- the file may not necessarily be a valid GeoPackage file, i.e it may not respect all requirements
  of the GeoPackage specification, provided it can still be read by GDAL.
- the file can be created with any means.

The winner will be offered a drink of his/her choice by Even Rouault when we have the
opportunity to meet in person and his/her winning file will be included in the GDAL test suite.