All features displayed outside of Advanced Mode are experimental and for preview purposes. Open Profile and turn Advanced Mode on to use the Lightning wallet.

Chats
Private · Local · PCC
No private chats yet
Cloud · Cerebras · API
No cloud chats yet
v0.2.5 · Advanced Mode off. hm-wallet (phoenixd) and Profile stay live. Extra panels stay blurred until you turn Advanced Mode on.
Cerebras · Fast Inference
Up to 3,000 tokens/sec · Streaming · Private Works in 0.1.5
Checking… gpt-oss-120b
higherMark AI
Cerebras fast inference · up to 3,000 tokens/sec
Private Cloud Compute · All models · One place
0 tokens · 0 sats · Wallet: — sats Cerebras
This is the pooled company key. Prefer .env → CEREBRAS_API_KEY for all users. This field is this-device BYOK. See config/COMPANY_CEREBRAS_KEY.example.
Apple Private Cloud Compute
Checking…
Detects your Mac model and macOS version…
What is PCC?
Apple's Private Cloud Compute runs AI on Apple's own attested servers — cryptographically verifiable, never logged, never visible to Apple or higherMark. Prompts are end-to-end encrypted between your device and the server enclave. Requires macOS 26 Tahoe + Apple Silicon.
Requirements
macOS 26 Tahoe (currently in beta) · Apple Silicon M1 or later · higherMark Swift helper compiled. Toggle is greyed out if any requirement is missing — Cerebras is used as fallback.
Your Mac · Status
Checking your device…
Speed comparison
—
🍎 Checking macOS version…
Why Cerebras is different
Custom CS-3 wafer-scale silicon — not cloud GPU clusters
~27× faster
Cerebras · GPT OSS 120B
3,000 tok/s
Cerebras · Llama 3.3 70B
2,200 tok/s
Apple PCC (est. M4)
~300 tok/s
Gemini 1.5 Flash
~120 tok/s
GPT-4o
~80 tok/s
Claude Sonnet
~90 tok/s
Entire paragraphs appear in under a second. Cerebras uses a single wafer-scale chip — your request never waits in a GPU queue. Top up any amount and experience it.
LLM Council
Ask GPT-4o, Claude Sonnet, and Gemini simultaneously — compare answers side by side, toggle which models respond
via OpenRouter
GPT-4o OpenAI
GPT-4o will respond here
Claude Anthropic
Claude will respond here
Gemini Google
Gemini will respond here
💡 Credits are shared across all three — responses billed per token. Toggle off any model to skip it. OpenRouter key required (set in Profile → Developer).
Portfolio Balance
— USDB
Loading…
Sandbox · test — corridors
Quick actions
Recent Transactions
Loading…
🌐
Grid Global Fiat Ramp · Alpha Demo
This is an alpha demo of the Lightspark Grid fiat ramp. More features will be added soon. For top-up features, you can visit Cash App or any Bitcoin exchange.
powered by phoenixd
hm-wallet
Live in the Mac app · demo in the browser · v0.2.5

In the desktop app, phoenixd runs on this Mac — your seed, your node. This website is demo only. Click to open the wallet, or pop it out as its own rectangle.

Several other wallets in this app (Bark, Grid, Ark) run in demo mode. Keep Advanced Mode off in Profile for the simple path — hm-wallet (phoenixd) stays live and featured. Toggle Advanced on only if you want to unblur those extras.
Bitcoin Balance · Bark
— sats
spendable: — pending: —
Signet · test
🐶 Initializing Bark wallet…
Add money to Lightning

Fund this device wallet, then spend sats on Cerebras inference from the AI tab. 100 sats ≈ 10 credits. Keys never leave this Mac.

Top Up with Lightning
Beta
Scan with Cash App
Send Bitcoin from your Cash App balance to your Lightning address here. Your sats arrive self-custodially in your Bark wallet.
Lightning address = your Ark address. Any Lightning wallet works: Cash App, Strike, Muun, Alby, Wallet of Satoshi. 1 sat ≈ $0.001 USD · min 100 sats to top up credits.
Nostr Identity
npub (public key)
—
nsec (private — never share)
•••••••• (click to reveal)
Ark Address
—
Click to copy · Self-custodial via Bark SDK · Lightning send/receive · Ark address (send 0.01 sat = 10 credits minimum)
Coming soon
🔗
VTXO management
Advanced virtual UTXO control
Soon
⛓
Onchain board / offboard
Move bitcoin on and off Ark from the app
Soon
💳
Visa card
Spend sats anywhere via Lightspark
Soon
POOL LOGIN · NOSTR IDENTITY
Your Pool Account
Account = your npub · No email · No password
Active
Your npub (pool account ID)
—
⚠ If you top up credits, save your nsec — it's your only way to recover your account and credits. Go to Profile → Backup.
NOSTR · AI · POOL
Public Inference Credits
Community-funded · operator-seeded · open access
Active 1.0% cut
Pool balance $—
Used: $0 0 tokens served
$0
contributed
0
contributors
1.0%
platform cut
Your Credits
Free credits (first launch gift) 1000 / 1000
~$1.00 remaining · 1,000 credits = $1 of AI inference
Use pool credits
Draw from the shared community pool instead of your own credits
🎁 Using your 1,000 free credits
Top Up Credits
⚡
Lightning
Any amount
🍎
Apple Pay
$2 · $20
💳
Card
Stripe
Why Cerebras
~27× faster
Cerebras · GPT OSS 120B
3,000 tok/s
GPT-4o
~80 tok/s
Claude Sonnet
~90 tok/s
Contribute to Pool

Add USDB to the shared pool. Platform cut: 1.0%. The rest is shared immediately with all users.

Profile · first control
Advanced Mode
v0.2.65 · preview
Off (default). All features displayed outside of Advanced Mode are experimental and for preview purposes.
Off · preview On · live wallet

All features displayed outside of Advanced Mode are experimental and for preview purposes. Turn this on to use the Lightning wallet. Other features stay in development until the stable release (v1.0).

Advanced Mode is on. The Lightning wallet is live in the desktop app. Bark, Grid, Ark, AI, and the ramp are still in development for v1.0. Sweep funds before you install another build.

Whenever you install a new version, sweep funds first. Keys stay on this Mac.

Live after Advanced Mode hm-wallet · phoenixd Lightning on this Mac · recovery phrase · iPhone paired to this Mac
In development for v1.0 AI / Cerebras · Bark · Grid · Ark · LLM Council · Apple PCC · Pool · Ramp · Stripe · Clerk email
Color
Burgundy (default, Apple Deep Burgundy #4D1821) · Light · Dark. Same as the top-right toggles.
Burgundy Light Dark
About

higherMark

Developed by Fourth Sol LLC, registered in North Carolina.

Version 0.2.65. The Lightning wallet runs on your Mac with phoenixd. Fourth Sol does not hold your bitcoin or your recovery phrase. Other features are in development for the stable release (v1.0). Copyright © 2026 Fourth Sol LLC.

STEP 1 · YOUR IDENTITY
Identity active
npub · public key (share freely)
—
nsec · private key (never share)
•••••••• · click to reveal for 10s
CREDITS & MEMBERSHIP

No need to subscribe to multiple AI services. Top up as little or as much as you want. $1 = 1,000 credits.

higherMark CLI · v0.1.1
Cerebras 3,000 tok/s from any terminal, Cursor IDE, or CI pipeline
Live
What is the higherMark CLI?

The CLI lets you use Cerebras 3,000 tok/s inference directly from your terminal, Cursor, VS Code, or any CI script — authenticated via the same npub identity you created in the app. No extra accounts, no API key management. Your credits flow from the same wallet.

It will be a drop-in replacement for claude, openai, and llm CLI tools — same interface, orders-of-magnitude faster.

# one-line install · no Node.js required
curl -fsSL https://highermark.xyz/install.sh | bash
# start chatting immediately
highermark
highermark grok "explain this error"
# pipe support
cat error.log | highermark "what's wrong here?"
⚡
3,000 tok/s in your terminal — Cerebras inference, same speed as the app
🔑
Auth via npub — no separate API key; uses your higherMark credits
🔀
Pipe-friendly — works with stdin/stdout for shell scripts, Make, CI
🤖
Agent mode — multi-step tasks, file reads, parallel queries from one command
🍎
PCC flag — --pcc routes to Private Cloud Compute on supported Macs, 0 credits
🧠
Council from terminal — hm council "your prompt" queries all 3 LLMs, shows diff
v0.1.1 · macOS arm64 · full docs → ✓ live
STEP 2 · FEATURE ACCESS

Each tier unlocks as you set things up.

Active now
AI + Identity
Works the moment your npub is generated
🍎
Private Cloud Compute (macOS 26+ · Apple Silicon)
⚡
Cerebras fast inference · up to 3,000 tok/s
🧠
LLM Council · GPT-4o + Claude + Gemini simultaneously
🔑
Nostr identity · npub / nsec
Top up to unlock
Lightning Wallet
Send sats to your Ark address to activate
⚡
Bark self-custody wallet · keys never leave this device
🧠
Pay-as-you-go AI · metered per 1K tokens in sats
🌐
Send / receive Lightning payments
Email required
Global Fiat Ramp
One-time email OTP · no password
💵
USDB embedded wallet balance
🌍
Send ACH · PIX · SEPA · SPEI · UPI globally
Connect your Grid account
Enter the code sent to
Grid account connected
Usage Statistics
0
Total tokens
0
Chats
0
Credits used
0
PCC sessions
Models used
Loading usage data…
macOS Desktop App · Apple Silicon
Download higherMark
v0.2.5 · native Tauri · macOS 14+ · Apple Silicon (M1+) · phoenixd mainnet · from GitHub Releases
higherMark
File: higherMark_GridGlobal_0.1.5_aarch64.dmg · open the disk image → drag higherMark to Applications → right-click → Open the first time (Gatekeeper). Source: github.com/jimsbr/prodjuly3rdhM
Company Cerebras API key

Paste the Fourth Sol / higherMark company Cerebras key here. This is the pooled inference account. The same key belongs in .env as CEREBRAS_API_KEY (see config/COMPANY_CEREBRAS_KEY.example) so every user shares the pool.

No key saved on this device yet.
AI difficulty adjustment

Inference cost drops 0.05% for every 10 unique users (npubs). Formula: discount% = floor(users / 10) × 0.05.

Unique users—
Current discount0.00%
Next drop at10 users
Developer
Feedback & Support

We respond within 24 hours. Request new models, new workflows, report bugs, or share what you love.

About higherMark
🏛
higherMark 0.2.65
Developed by Fourth Sol LLC, registered in North Carolina. Copyright © 2026 Fourth Sol LLC.
🔐
Privacy First
Keys in OS keychain · no telemetry · no account required · your data stays on your device
🌐
Contact & Bug Reports
highermark.xyz — all bug reports, security concerns, and feedback are welcome
⚡
Powered by
phoenixd (ACINQ) · hm-wallet · Cerebras · OpenRouter · Bark (demo) · Lightspark Grid (demo) · Nostr
CLI Tool · v0.1.1
higherMark Terminal
Works in Cursor, iTerm2, Warp, macOS Terminal · no Node.js required
Live
# one-line install · standalone binary
curl -fsSL https://highermark.xyz/install.sh | bash
# interactive chat — Cerebras ⚡ 3,000 tok/s
highermark
# switch models
highermark grok / claude / gemini / deepseek
# pipe support
cat error.log | highermark "what's wrong?"
⚡
Fastest inference fallback between split terminals
🍎
Default to PCC for 0-credit on-device compute
🔀
Compatible with Cursor, Windsurf, VS Code agent tasks
🔑
Authenticates via your local npub — no API key config needed
In Development
Experimental Features
Everything on this tab is actively being worked on
⚠ Test stage
Arkade Node
Being reworked
🚧 The Arkade wallet integration is in test stage. The Wallet tab runs on Bark SDK (Second). This panel is for connecting your own arkd node.
Connect own arkd instance
Use your own self-hosted Ark node
🌐 Using arkade.computer (hosted)
Bark Wallet · Network
Use Bitcoin mainnet
Off = Signet (test coins) · On = real bitcoin via ark.second.tech
🧪 Signet — get free test coins at signet.2nd.dev
Send Money
Add Funds (Sandbox)
Receive Lightning
Send Lightning
Top Up Credits
$2
one-time
2,000 credits
$20
/month
20,000 credits
⚡
Cerebras fast inference — 3,000 tok/s, funded from your credits
🧠
LLM Council — GPT-4o + Claude + Gemini via OpenRouter
♾
$1 = 1,000 credits — spend only what you use, never expire
🔑
Tied to your npub — not your email, transferable
✓ Always free: your wallet, Bitcoin/Lightning, fiat ramps, and Nostr identity. Credits only gate AI inference.
Credits tied only to your npub. For recovery, save your nsec before topping up.
Feedback & Support

We respond within 24 hours. All feedback is welcome and helps shape the product.

Your feedback is private. Response within 24 hours.
Attach a different nsec
⚠ Your current identity and its funds stay tied to the old nsec. Withdraw everything before switching.
Current npub
—
Balances on this identity
Loading…