Harmonic (@harmonic_gg) header
Harmonic (@harmonic_gg) profile picture

Harmonic is a block building system on Solana to increase validator rewards.

Joined October 2025
Photo by Harmonic (@harmonic_gg)Photo by Harmonic (@harmonic_gg)Photo by Harmonic (@harmonic_gg)Photo by Harmonic (@harmonic_gg)Photo by Harmonic (@harmonic_gg)Photo by Harmonic (@harmonic_gg)Photo by Harmonic (@harmonic_gg)Photo by Harmonic (@harmonic_gg)Photo by Harmonic (@harmonic_gg)Photo by Harmonic (@harmonic_gg)
Run Harmonic. • Streaming mode (replaces the former Full Block Auction) • Configurable scheduling: 2 network-aligned options, 1 max revenue option • Custom scheduling strategies on request • Two validator clients with full third-party security audits: Salsa (Agave) and Samba (Firedancer) • No sandwiching, no censorship, no malicious MEV New application form, apply in 2 mins: go.harmonic.gg/onboard
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we got that dog in us
nico celebrating 30% stake on @harmonic_gg
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our very own chief caveman (@cavemanloverboy) spent some of the weekend fixing bugs and adding Harmonic support to the Mithril Solana validator client @OverclockSol this block, broadcasted by the Temporal Topaz Validator, was produced on the HarmonicMithril client orbmarkets.io/block/46020788… Harmonic remains committed to making Solana the most robust blockchain where any asset can be traded at the speed of light
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Alpenglow is live on mainnet. ~27% of Solana stake runs on Harmonic. All of it is on Salsa builds with full Alpenglow support. Finality drops from seconds to ~150ms.
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harmonic bundles: now available to all
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Harmonic retweeted
Harmonic Bundles are now OPEN TO THE PEOPLE! Send EVERY BUNDLE you can POSSIBLY CONSTRUCT to our NEW Public Endpoint. Very fast, very fair -- the smartest Searchers on the network say it's the best in history! The Best MEV Infra is now a PUBLIC GOOD. MAKE MEV GREAT AGAIN!
Harmonic Bundles are now open to everyone 🎵 Send bundles over gRPC or JSON-RPC without needing to be whitelisted or authenticated. Same revert protection, zero protocol fees, tips are just priority fees. docs.harmonic.gg/searchers/h… Need higher rate limits? Apply here: form.typeform.com/to/aUd0Fiw…
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Harmonic Bundles are now open to everyone 🎵 Send bundles over gRPC or JSON-RPC without needing to be whitelisted or authenticated. Same revert protection, zero protocol fees, tips are just priority fees. docs.harmonic.gg/searchers/h… Need higher rate limits? Apply here: form.typeform.com/to/aUd0Fiw…
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harmonic mogs on every category
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scientists cooked up some serious innovations last 24 hours, with more to come
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apps should run solana validators on harmonic
Apps should run solana validators
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a quarter and some change harmonic.gg/network
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get paid to support client diversity
absolutely MONUMENTAL day for solana ✅ BIG shoutout to @Ashwinningg et. al. for successful Alpenswitch on testnet another BIG shoutout to @jump_firedancer for TWO milestones today: ✅ frankendancer is officially dead, on testnet. no version of frankendancer can join testnet. ✅ full firedancer client has hit TEN PERCENT stake on mainnet — with @harmonic_gg leading the way!
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Preconfs are live in partnership with @triton_one See exactly what Harmonic's block builder has selected for the next block, before it's even reached the leader. Our builder, showing its work, live: bit.ly/3USJAi5
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Live now! Learn about preconfs and our partnership with @triton_one from our own @s4bs94
Come be the first to learn about @harmonic_gg preconfs, what they are, where they come from, what you use them for, and how to get them! Streaming with @s4bs94 in a few minutes! nitter.cf/i/broadcasts/1AxRnZbpO…
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Coming Monday there is an extra Pirates Parley with @SteveCleanBrook and @s4bs94 from @harmonic_gg, 3 PM UTC. You probably can imagine what this is going to be about ;)
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Harmonic and its connected validators have not been impacted by this incident and remain fully operational.
We are aware of an incident affecting a portion of our internal network earlier this evening. We can confirm that the impact has been limited to our own funds and that no customer or third-party assets have been affected. We are working with @asymmetric_re to investigate the incident and will provide further updates as appropriate.
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Harmonic does not custody user funds, hold customer assets, or store user private keys. There has been no impact to Harmonic users, connected validators, or normal Harmonic operations.
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Harmonic retweeted
Replying to @cavemanloverboy
@cavemanloverboy wrote Solana's SIMD-0553 proposal and just walked @Cointelegraph through it: make resource-intensive transactions pay a bit more, cut costs for everyone else, and crank up the SOL burn. Check it out here: cointelegraph.com/magazine/s…
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Harmonic retweeted
📽️ How will reduced inflation and increased token burns impact $SOL? @cavemanloverboy from Temporal and @s4bs94 from Harmonic join Solana Weekly News to unpack the latest SIMDs. Join us tomorrow at 11am ET LIVE on X 👇
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