Changes

Changes to this specification are listed below.

Version 3.0-d1 (February 2026)

• Publish the FDSN reserved extra headers schema definition in JSON Schema specification 2020-12 (latest as of this publication). The previous schema was “2023-07”, but was never officially released and is no longer available. There is no functional change to the FDSN reserved headers, only a change in the schema reference.

Version 3.0-d0 (April 2023)

• Specification revision 2023-01-18 adopted by FDSN.

• Reference data were refined following the specification revision.

2021

• Initial specification of miniSEED 3