A WITSML server that supports versions 1.3.1.1 and 1.4.1.1 of the specification.  RockPigeon supports the getFromStore, addToStore, updateInStore and deleteFromStore APIs.  A unique capability of the SigmaStream server is its ability to create custom logs comprising of mnemonics from multiple sources publishing data at varying frequencies.  For instance, a 100 Hz time log can be created by combining data from a 1 sec EDR, 20 Hz surface sub and a 200 Hz vibration sensor.  This is because RockPigeon subscribes for the channels making up the time log from YellowHammer, using a desired frequency of 100 Hz.​