Isaac Sheff

Discussion: Typhon's Chimera Chains We recently published a blog post on Chimera Chains, a feature of Anoma’s Typhon ordering and execution engine. Chimera Chains generalize shared sequencers. They use a consensus based on Heterogene...

Chimera chains are intended to "make the easy thing easy." When a set of chains have a lot of overlap, it should be fast and easy to do cross-chain transactions, and with Chimera chains, it will be. Any questions? Come discuss on the forum. 9/9

21.09.2023 21:23 — 👍 0    🔁 0    💬 0    📌 0

In the blog post, we detail what it means to keep or lose atomicity, what atomicity guarantees we can expect will be available in the wild, and future generalizations of Chimera Chains. We also discuss communication within atomic bundles, which shared sequencers can use too. 8/9

21.09.2023 21:22 — 👍 0    🔁 0    💬 0    📌 0

3 chains problem

In particular, Chimera chains solve the "deciding which consensus to execute" problem. We explicitly partition state to specify what multi-chain transactions are possible at any time. All partitions retain the full guarantees of their base chain. 7/9
blog.anoma.net/heterogeneou...

21.09.2023 21:22 — 👍 0    🔁 0    💬 0    📌 0

Heterogeneous Paxos and Multi-Chain Atomic Commits | Blog - Anoma Heterogeneous Paxos exploits the high intersection between validator sets of different blockchain to create a heterogeneous consensus protocol for atomic multi-chain transactions & extends the capabil...

Chimera chains run on Heterogeneous Paxos, which provides specific guarantees for when these bundles will remain atomic. More overlap between trust models strengthens this atomicity guarantee. We discussed Heterogeneous Paxos in an earlier post. 6/9

21.09.2023 21:20 — 👍 0    🔁 0    💬 0    📌 0

atomic bundles with communication

Like shared sequencers, Chimera Chains commit atomic bundles of transactions to each base chain. Unlike shared sequencers, chimera chains are still possible when the base chains' trust models are different. 5/9

21.09.2023 21:19 — 👍 0    🔁 0    💬 0    📌 0

Heterogeneous Paxos and Multi-Chain Atomic Commits | Blog - Anoma Heterogeneous Paxos exploits the high intersection between validator sets of different blockchain to create a heterogeneous consensus protocol for atomic multi-chain transactions & extends the capabil...

We discuss some problems with the traditional "trustless" multi-phase commit solution in an earlier post.

Other solutions involve a trusted third party, or, if both chains share exactly the same trust model, a shared sequencer. 4/9

anoma.net/blog/heterog...
www.umbraresearch.xyz/writings/sha...

21.09.2023 21:18 — 👍 0    🔁 0    💬 0    📌 0

train and hotel

This brings us to a classic example in cross-domain atomic transactions: the user wants a train ticket if and only if they can also get a hotel room. They want to run these transactions atomically. If they get one, and then the other becomes unavailable, the user will be sad. 3/9

21.09.2023 21:17 — 👍 0    🔁 0    💬 0    📌 0

We've been studying transactions with heterogeneous trust. Ultimately, Anoma's Typhon engine will allow anyone to boot up a blockchain / replicated state machine with their own trust model (stake token, PoW system, source of authority: some method of choosing quorums). 2/9

21.09.2023 21:15 — 👍 0    🔁 0    💬 0    📌 0

Typhon's Chimera Chains | Blog - Anoma Chimera Chains generalize shared sequencers. They use a consensus based on Heterogeneous Paxos to simplify cross-blockchain atomic transactions for chains with overlapping trust models.

New blog post about my main research project, Chimera Chains!

Chimera Chains generalize shared sequencers. They use a consensus based on Heterogeneous Paxos to simplify cross-blockchain atomic transactions for chains with overlapping trust models. 1/9

21.09.2023 21:14 — 👍 1    🔁 0    💬 8    📌 0