Today's post is pretty cool: it details how covenants like CTV can be used to improve on-chain bitcoin signing oracles by solving the timeout/rollover issue and solving the miner/oracle collusion issue on punishment. This issue is similar to the Blockstream Liquid Custody Federation rollover bug from a while back (which this type of design also helps to fix).

https://rubin.io/bitcoin/2021/12/17/advent-20/

It also describes:
- how a protocol on top can make 'branch free' attestation chains where if you equivocate your funds get burned.
- lightly, various uses for these chained attestations

In addition, Robin Linus has a great whitepaper he put out getting much more in the weeds on the concepts described in the post, it's linked in the first bit of the post.

cheers,

Jeremy