Your money, your keys, your terms.
Greenhouse is the crypto layer of Garden. We do not custody your assets — you do, with us as one of n threshold signers. Every spending decision is policy-checked before it is signed. Every signature is reconciled into Bean. There is no email reset. There is a guardian ceremony.
Self-Custody & Vault
Transfer · cold/01 → ops/03 · USDC
- Policy check within $5,000/day band
- Allowlist vendor_9b matched
- Threshold2 of 3 reached
Anchored on Solana. Settles everywhere.
native + Lightning
L1 + Optimism, Arbitrum, Base
anchor program · home of Greenhouse
PoS + zkEVM
C-chain
IBC-enabled
fiat anchors
enterprise rail
Move VM
Move VM
sharded L1
USDT high-volume
Plutus
The unit of working capital.
Solana, Ethereum, Base, 8 more
Ethereum, Solana
Ethereum, Solana
Ethereum
Ethereum
On-chain doesn't mean off-ledger.
A USDC transfer signed by Greenhouse on Base lands as a balanced journal entry in Bean — sales tax, FX revaluation, and counterparty mapping all derived from the same transaction. Period close includes your on-chain activity by construction; you don’t reconcile it back in.
tx 0x9f3a2c…be17 from greenhouse:cold/01 to greenhouse:ops/03 amount 120,400.00 USDC block 9,028,144 · base mainnet gas 0.04 USDC (sponsored) nonce 412 signer FROST 2-of-3 · CFO + CEO sealed ed25519:greenhouse_03 blake3:c1… status confirmed @ block + 14
J-2026-04-29-04417
| Acct | Account | Debit | Credit |
|---|---|---|---|
| 1100 | Accounts Receivable | $14,820.00 | |
| 2200 | Sales Tax Payable | $1,209.00 | |
| 4000 | Software · subscription | $13,611.00 | |
| Total | $14,820.00 | $14,820.00 | |
One transaction, two views. The blockchain receipt and the journal entry chain to the same blake3 root.
Self-custody that survives a custodian going dark.
Coinbase Custody and Fireblocks lock you into their key topology. Anchorage holds your keys in a qualified custodian wrapper. Greenhouse is a key topology you own — FROST threshold signing across your own devices, with Garden as one possible signer, never enough to move funds alone.
| Capability | Coinbase Custody | Fireblocks | BitGo | Anchorage | Greenhouse |
|---|---|---|---|---|---|
| You hold the keys | — | MPC, you co-sign | MPC | qualified custody | ✓ FROST, your devices |
| Hardware-backed signing | ✓ HSM | — | ✓ HSM | ✓ HSM | ✓ YubiKey, Ledger, Trezor |
| Threshold customisable | — | ✓ | ✓ | — | ✓ 2-of-N up to 7-of-N |
| No vendor lock-in | — | — | — | — | ✓ open key, exportable |
| Policy-as-code spending | limited | ✓ | ✓ | ✓ | ✓ |
| Posts transfers to ledger | — | — | — | — | ✓ Bean atomic |
| Agent-initiated transfers | — | — | — | — | ✓ with threshold + policy |
| Travel Rule (TRP / TRUST) | ✓ | ✓ | ✓ | ✓ | ✓ Sage-enforced |
| Guardian ceremony recovery | — | — | — | — | ✓ Shamir-on-paper |
| 13 chains + 5 stablecoins | limited | ✓ | ✓ | limited | ✓ |
| MCP server (agent-callable) | — | — | — | — | ✓ |
| Audit-chained signing events | logs | logs | logs | logs | ✓ blake3 + ed25519 |
Lose a signer. Don't lose the org.
If a signer device is lost or compromised, recovery is a formal ceremony. A quorum of guardians proves identity, attests to the loss, and rotates the missing share. Time-bounded, signed at every step, recorded in Bean’s audit chain. There is no help desk that can move your money.
CEREMONY greenhouse.recovery.case_18a initiated 2026-04-28 14:02 UTC by alex@acme.com reason device:nina@acme reported lost guardian anchorage · attested · 14:18 guardian garden-support · attested · 14:21 signer device:rana@acme · attested · 14:24 rotation new share generated · device:nina-replacement attest ed25519:greenhouse_signer_03 blake3:c1… bind Bean J-2026-04-28-04529 Sealed
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