There are now only two issues marked 'blocker' that needs to be resolved before we produce a release candidate:
The first one is about a couple of todos in the text of the specification: contributions are very welcome to close this.
The second is more substantial, and concerns the issue of what to do in case one detects a hash collision: Stefano and Roberto are trying to collect the state of the art on this issue, and will report findings in the issue itself.
Cheers
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Roberto (on behalf of the SWHID specification core team)