[Research]: Handling Forks in sBTC-v1

[AshtonStephens]

Research - Handling Forks in sBTC-v1

This ticket tracks the research on handling forks and how it impacts sBTC-v1.

Details can be found in #12

Closing Checklist

• The takeaway from this issue is clearly documented in the description of this ticket.
• Everyone necessary has reviewed the resolution and agrees with the takeaways.
• This ticket has or links all the information necessary to familiarize a contributor with the topic and how it was resolved.

[AshtonStephens]

Added a note in the discussion. We'll want to update #16 to include any details around waiting for finality.

That discussion might be ballooning in size.

Additionally, this changes the MVP requirements for sBTC-v1 because peg-out will be 6 Bitcoin blocks.