PrivateDAO MagicBlock Engineering Report

Date: 2026-06-11 Audience: MagicBlock protocol engineering review Repository snapshot reviewed: origin/main at f96bfaab10375749afcc7d5cd3e99b92e9fd6c90 Project: PrivateDAO Primary chain posture: Solana Testnet Primary MagicBlock posture: private payment corridor, proof lane, and settlement-gated confidential payout execution

1. Executive Summary

PrivateDAO currently uses MagicBlock as a confidential private-payment execution corridor connected to the PrivateDAO governance and treasury lifecycle.

The implemented system is not just a marketing page. The repository contains:

• Anchor account state for MagicBlockPrivatePaymentCorridor.
• Anchor instructions to configure and settle that corridor.
• Execution gating that blocks confidential token payouts until MagicBlock settlement evidence exists when required.
• TypeScript utilities for MagicBlock Payments API health, challenge/login, balance/private-balance boundaries, unsigned transaction builders, mint initialization, deposit, transfer, and withdrawal.
• CLI scripts for configuring, settling, inspecting, and running MagicBlock private payment routes.
• Runtime evidence artifacts and a verifier script.
• Public web routes and live API proof endpoints for reviewer-visible validation.
• Tests covering settlement-required execution, operator authorization, malformed settlement evidence, wrong recipient rejection, and replay rejection.

Important boundary:

The current implementation is a MagicBlock Payments API + PrivateDAO on-chain corridor/receipt-gating integration. It does not currently include ephemeral-rollups-sdk, #[ephemeral], #[delegate], #[commit], MagicIntentBundleBuilder, Magic Actions, cranks, VRF, or PER-native account delegation in the Anchor program. Those are the next protocol-deepening steps proposed in this report.

2. Product Role Of MagicBlock In PrivateDAO

PrivateDAO is being positioned as confidential coordination infrastructure for onchain organizations. MagicBlock is used as the fast/private execution rail for confidential value movement after governance and review.

In the PrivateDAO product model:

1. Governance creates or approves a sensitive action.
2. Confidential payout metadata stores aggregate and hashed information only.
3. MagicBlock private payment routing handles private deposit, transfer, and withdrawal flow.
4. PrivateDAO records a proposal-bound corridor PDA.
5. The DAO authority settles MagicBlock evidence on-chain.
6. PrivateDAO payout execution is allowed only after settlement evidence is visible.
7. Public proof endpoints expose outcome verification without exposing private balance state.

This supports the business message:

> Private coordination, public verification, and wallet-controlled execution.

3. Current Code Surfaces

3.1 Anchor Program Entrypoints

File: programs/private-dao/src/lib.rs

Relevant public instructions:

• configure_magicblock_private_payment_corridor
• settle_magicblock_private_payment_corridor
• execute_confidential_payout_plan
• execute_confidential_payout_plan_v2
• execute_confidential_payout_plan_v3

Relevant account:

• MagicBlockPrivatePaymentCorridor

Relevant policy fields:

• require_magicblock_settlement

The corridor PDA seed is:

["magicblock-corridor", proposal]

This makes the MagicBlock corridor proposal-scoped rather than globally reusable.

3.2 Corridor Account Model

File: programs/private-dao/src/lib.rs

MagicBlockPrivatePaymentCorridor stores:

• dao
• proposal
• payout_plan
• configured_by
• settled_by
• api_base_url
• cluster
• owner_wallet
• settlement_wallet
• token_mint
• validator
• transfer_queue
• route_hash
• deposit_amount
• private_transfer_amount
• withdrawal_amount
• deposit_tx_signature
• transfer_tx_signature
• withdraw_tx_signature
• status
• configured_at
• settled_at
• bump

Engineering interpretation:

The account is a compact audit object that binds MagicBlock private-payment routing to a specific DAO proposal and confidential payout plan.

3.3 Configure Logic

File: programs/private-dao/src/treasury.rs

configure_magicblock_private_payment_corridor enforces:

• operator must be DAO authority or proposal proposer;
• proposal must still be in voting state;
• proposal must have no commits or reveals yet;
• payout plan must match the DAO/proposal;
• payout plan must be configured;
• payout asset must be token;
• token mint must exist;
• route hash must be non-zero;
• private transfer amount must be greater than zero;
• if an existing corridor exists, it must match the same DAO/proposal/payout plan and not already be settled.

The function records the MagicBlock API base, cluster, owner wallet, settlement wallet, token mint, route hash, amounts, optional validator, timestamps, and status.

3.4 Settlement Logic

File: programs/private-dao/src/treasury.rs

settle_magicblock_private_payment_corridor enforces:

• operator must be DAO authority or proposal proposer;
• validator and transfer queue must be non-default public keys;
• transfer transaction signature is required;
• deposit and withdraw signatures may be empty only when explicitly allowed;
• corridor must match DAO/proposal/payout plan;
• payout plan must still be configured;
• corridor must still be in configured state.

It then records:

• validator;
• transfer queue;
• deposit, transfer, and withdraw signatures;
• settled status;
• settled_by;
• settled_at.

3.5 Execution Gating

Files:

• programs/private-dao/src/treasury.rs
• programs/private-dao/src/privacy.rs
• programs/private-dao/src/dao.rs

When MagicBlock settlement is required for token payout execution, execution checks:

• MagicBlock corridor account exists;
• corridor is owned by the PrivateDAO program;
• corridor DAO/proposal/payout plan match the current execution;
• corridor status is Settled;
• corridor token mint equals payout plan token mint;
• corridor settlement wallet equals payout plan settlement recipient;
• validator and transfer queue are present.

This turns MagicBlock from an external receipt into an execution gate.

3.6 Client And CLI Layer

File: scripts/lib/magicblock-payments.ts

Implemented MagicBlock Payments API helpers:

• getMagicBlockHealth
• getMagicBlockChallenge
• loginMagicBlockPrivatePayments
• getMagicBlockBalance
• getMagicBlockPrivateBalance
• getMagicBlockMintInitializationStatus
• buildMagicBlockInitializeMint
• buildMagicBlockDeposit
• buildMagicBlockTransfer
• buildMagicBlockWithdraw
• submitMagicBlockUnsignedTransaction
• submitMagicBlockUnsignedTransactionWithWallet
• magicBlockRouteHash

Default API base:

https://payments.magicblock.app

Default MagicBlock cluster in the client helper:

devnet

Private balance boundary:

getMagicBlockPrivateBalance requires a bearer token produced by the challenge/login flow. The repo does not fetch private balances without wallet-authenticated authorization.

CLI scripts:

• scripts/magicblock-private-payments.ts
• scripts/configure-magicblock-corridor.ts
• scripts/settle-magicblock-corridor.ts
• scripts/inspect-magicblock-corridor.ts
• scripts/build-magicblock-runtime-evidence.ts
• scripts/verify-magicblock-runtime-evidence.ts
• scripts/probe-magicblock-private-payments.mjs

Package scripts:

• npm run probe:magicblock-private-payments
• npm run configure:magicblock
• npm run settle:magicblock
• npm run inspect:magicblock
• npm run magicblock:payments
• npm run build:magicblock-runtime
• npm run verify:magicblock-runtime
• npm run record:magicblock-runtime
• npm run capture:magicblock-runtime

4. Web And API Surfaces

4.1 Product Route

Live route:

https://privatedao.org/services/magicblock-private-payments/

Source file:

apps/web/src/app/services/magicblock-private-payments/page.tsx

The page exposes MagicBlock as:

• a private payment corridor;
• on-chain Solana Testnet proof lane;
• challenge/login authenticated private-read boundary;
• wallet-signed execution continuation.

The legacy route:

/services/magicblock

redirects/preserves historical traffic into:

/services/magicblock-private-payments

4.2 Status Component

Source file:

apps/web/src/components/magicblock-private-payments-status.tsx

This component reads:

• https://api.privatedao.org/api/v1/magicblock/onchain-proof
• https://api.privatedao.org/api/v1/magicblock/health
• https://api.privatedao.org/api/v1/magicblock/challenge?pubkey=<wallet>
• https://payments.magicblock.app/health

The page explicitly displays the split between:

• Solana runtime proof cluster;
• MagicBlock Payments API cluster.

That explicit cluster boundary is important because the current live proof reports Solana Testnet while the MagicBlock Payments API reports devnet.

4.3 Live API Proof

Checked on 2026-06-11:

https://api.privatedao.org/api/v1/magicblock/onchain-proof

Observed facts:

• ok: true
• proof source: magicblock-onchain-proof
• network: testnet
• RPC endpoint: https://api.testnet.solana.com
• program owner: EP9xE8MJZ6FfyEwLqns6HDdUZBknEa7WGYs1Jzsecuva
• corridor PDA: CwB641sj7R6GAL84kf5xThi4zjN9Edx5S7yXz7GDuo85
• corridor account exists
• corridor account is non-executable
• MagicBlock API base: https://payments.magicblock.app
• MagicBlock health: ok
• private payments require bearer-token challenge/login
• checked transactions: 3
• finalized transactions: 3
• allFinalized: true

Finalized Testnet proof transactions returned by the live endpoint:

4.4 Health API

Checked on 2026-06-11:

https://api.privatedao.org/api/v1/magicblock/health

Observed facts:

• ok: true
• source: backend-indexer
• MagicBlock API base: https://payments.magicblock.app
• cluster: devnet
• health: ok
• private payments paths:
• /v1/spl/challenge
• /v1/spl/login
• /v1/spl/private-balance
• bearer token required: true

4.5 Privacy Execution Matrix

Checked on 2026-06-11:

https://api.privatedao.org/api/v1/privacy-execution-matrix

MagicBlock rows found:

1. private-payments
2. magicblock-private-payments

Both rows route to:

https://privatedao.org/services/magicblock-private-payments/

Current on-chain statuses returned by the matrix:

• testnet-corridor-settled
• magicblock-corridor-and-claim-repeatable-on-testnet

Proof endpoints returned:

• /api/v1/magicblock/onchain-proof?refresh=1
• /api/v1/magicblock/health
• /api/v1/privacy-execution-claims/prepare?claim=magicblock-private-payments

4.6 Visitor-Repeatable Claim Preparation

Checked on 2026-06-11:

https://api.privatedao.org/api/v1/privacy-execution-claims/prepare?claim=magicblock-private-payments

Observed facts:

• cluster: testnet
• service: magicblock-private-payments
• native proof class: magicblock-corridor-receipt-plus-visitor-wallet-memo-attestation
• memo model: PDAO_ENCRYPTED_CLAIM_V1
• signing model: visitor wallet signs Solana Testnet Memo transaction
• privacy boundary: only digest commitment is anchored; AES key and private disclosure receipt remain with the visitor unless shared.

5. Runtime Evidence Artifacts

Files:

• docs/magicblock/private-payments.md
• docs/magicblock/operator-flow.md
• docs/magicblock/runtime-captures.json
• docs/magicblock/runtime.generated.json
• docs/magicblock/runtime.generated.md
• docs/magicblock/private-payments-live-probe.generated.md
• docs/magicblock/templates/*.json

Runtime evidence summary in docs/magicblock/runtime.generated.md:

• network: devnet
• target count: 6
• completed target count: 1
• deposit success count: 1
• private transfer success count: 1
• settle success count: 1
• execute success count: 1
• pending wallet-specific browser/mobile captures:
• Phantom
• Solflare
• Backpack
• Glow
• Android Native / Mobile

Captured CLI Devnet Test Wallet evidence includes:

• proposal: 52UpWHJodPWQzpR8u2qqpgwo3jRB7mvjgwCnf8oSJuXX
• corridor PDA: 8YH5f29UX363oMM1mqsXDyyBtyu4Y1b1BBuikV4xkAys
• settlement wallet: 2TrX1tAJjcPcV8nc6f8LBAe97jZVi5hPG6jND3Wb1mCk
• validator: MAS1Dt9qreoRMQ14YQuhg8UTZMMzDdKhmkZMECCzk57
• transfer queue: FgUh7pocATTbVxJeorMb5iZwMQWcoVAAzy1PcCz2suZT
• mint initialization: success
• deposit: success
• private transfer: success
• withdraw: success
• settle: success
• execute: success

Verifier run on the reviewed worktree:

node scripts/verify-magicblock-runtime-evidence.js

Result:

MagicBlock runtime evidence verification: PASS

The npm run verify:magicblock-runtime wrapper could not run in the isolated clean worktree because ts-node was not installed there. The committed JavaScript verifier was run instead and passed.

6. Tests Covering MagicBlock Logic

File:

tests/private-dao.ts

Important tests:

6.1 Configure And Execute Confidential Token Payout Through MagicBlock Corridor

Test name:

configures and executes a confidential token payout plan through a MagicBlock corridor

Coverage:

• initializes DAO;
• creates proposal;
• configures confidential token payout plan;
• derives magicblock-corridor PDA;
• configures MagicBlock corridor;
• commits vote;
• reveals vote;
• finalizes proposal;
• verifies execution fails before corridor settlement;
• settles MagicBlock corridor;
• executes confidential payout;
• verifies recipient token balance increases;
• verifies payout plan becomes funded;
• verifies corridor becomes settled;
• verifies proposal becomes executed.

6.2 Operator And Signature Guard

Test name:

enforces MagicBlock operator authority and settlement signature validation

Coverage:

• rogue operator cannot configure corridor;
• malformed settlement signatures are rejected;
• rogue operator cannot settle corridor;
• valid authority settlement succeeds.

6.3 Replay And Recipient Guard

Test name:

rejects confidential payout replay after MagicBlock-settled execution

Coverage:

• wrong settlement recipient is rejected;
• valid execution succeeds;
• repeated execution fails with AlreadyExecuted.

6.4 Utility-Level Validation

File:

programs/private-dao/src/utils.rs

Tests cover:

• corridor requires token mint;
• corridor requires non-zero route hash;
• signature validation respects required vs optional signatures.

7. Integration Matrix

8. MagicBlock Service Status

Checked from:

https://status.magicblock.app/api/services

Date checked: 2026-06-11

Devnet services reported:

PrivateDAO currently consumes MagicBlock Payments API rather than direct ER RPC routing in the program. The status data is still useful for readiness and future ER/PER work.

9. Git History Relevant To MagicBlock

git log --all --grep found these MagicBlock-specific commits:

Interpretation:

MagicBlock work entered as a private payment corridor in early April 2026, then was hardened into reviewer-visible runtime evidence, read-node challenge support, and Solana Testnet proof endpoints in May 2026.

10. Current Engineering Boundaries

Implemented

• MagicBlock Payments API wrapper and CLI.
• Challenge/login boundary for private reads.
• Private balance reads require bearer token.
• Unsigned transaction builders are supported.
• Proposal-bound corridor PDA.
• Configure and settle instructions.
• Settlement-gated confidential token payout execution.
• Testnet proof endpoint with finalized Solana transactions.
• Runtime evidence package and verifier.
• Product route and proof center integration.

Not Currently Detected

Repository scan did not detect:

• ephemeral-rollups-sdk dependency;
• @magicblock/* dependency;
• MagicIntentBundleBuilder;
• lamportsDelegatedTransferIx;
• magic_fee_vault;
• #[ephemeral];
• #[delegate];
• #[commit];
• cranks;
• VRF integration;
• Magic Actions post-commit base-layer instructions;
• PER permission-account delegation inside the Anchor program.

This means the current integration should be described as:

> MagicBlock private-payment corridor and settlement-proof gate.

It should not yet be described as:

> Full MagicBlock Ephemeral Rollup delegated-state architecture.

11. Commercial Design Result

MagicBlock makes PrivateDAO stronger commercially in three specific ways.

11.1 Buyer Problem

DAOs and onchain organizations need to pay contributors, reviewers, vendors, grants, and rewards without exposing sensitive operational details before governance and treasury execution finish.

11.2 PrivateDAO Solution

PrivateDAO creates the decision and approval envelope:

Proposal -> private coordination -> approve -> MagicBlock private payment corridor -> settle evidence -> execute payout -> public proof

11.3 Why MagicBlock Matters

MagicBlock helps PrivateDAO move from "private voting" into a practical confidential operations product:

• private payout routing;
• faster execution corridor;
• wallet-authorized private reads;
• receipt-based public accountability;
• composability with treasury, payroll, grants, and GamingDAO rewards.

For a buyer, the message is:

> Keep payout coordination private while making final execution provable.

12. Recommended Protocol-Deepening Roadmap

This roadmap is written specifically for MagicBlock engineering feedback.

Phase 1: Normalize Network Boundary

Current live proof is Solana Testnet while MagicBlock Payments API reports devnet. The UI already exposes this boundary. Next step is to confirm the correct canonical naming and environment support with MagicBlock:

• Should PrivateDAO label this as Solana Testnet + MagicBlock Devnet Payments API?
• Is there a MagicBlock Testnet Payments API cluster?
• Should live proof continue anchoring settlement on Solana Testnet while private payments API remains devnet?

Phase 2: Direct ER SDK Integration

Add MagicBlock ER-native program/client layer:

• ephemeral-rollups-sdk;
• dual connections: Solana base layer + MagicBlock ER;
• account delegation checks;
• commit/undelegate flows;
• explicit propagation waits;
• ER transaction routing with skipPreflight: true where recommended.

Candidate delegated accounts:

• private room operation state;
• gaming tournament/reward state;
• fast payout staging state;
• reviewer assignment state.

Phase 3: PER Permission Account

Add a permission-account model for VIP Private Rooms and confidential committees:

Room membership / permission account
        +
Private room proposal state
        ->
delegate both to PER
        ->
fast private coordination
        ->
commit outcome to base layer

The natural PrivateDAO mapping is:

• room membership hash;
• invite-only / token-gated / allowlist policy;
• reviewer assignment;
• private vote participation eligibility.

Phase 4: Magic Actions

Use MagicIntentBundleBuilder.add_post_commit_actions(...) for operations where ER commit and base-layer side effects must be coupled:

• tournament reward distribution;
• grant payout execution;
• treasury payout after private review;
• room reveal and public report generation;
• proof-record creation after commit.

Target flow:

private review / vote on ER
        ->
commit
        ->
base-layer payout / proof action

Phase 5: GamingDAO Low-Latency Path

GamingDAO is the cleanest low-latency MagicBlock use case in PrivateDAO:

• tournament decision room;
• hidden live votes;
• reward allocation;
• fast session state;
• public proof and payout after reveal.

MagicBlock ER/PER can provide real-time execution while PrivateDAO provides governance, treasury authorization, and proof.

Phase 6: Cranks And VRF

Potential future uses:

• cranks for reveal deadlines, payroll windows, and periodic reward settlement;
• VRF for tournament brackets, randomized reviewer assignment, grant review sampling, or raffle-style community rewards.

13. Questions For MagicBlock Protocol Engineering

1. For a product using Solana Testnet public proof and MagicBlock Payments API devnet private-payment boundary, what is the recommended environment label?
2. Is there a preferred testnet/devnet sequence for Payments API private transfer receipts that should be reflected in PrivateDAO's on-chain corridor account?
3. Should the corridor store MagicBlock validator and transfer queue as currently implemented, or should it store a stronger canonical MagicBlock receipt object?
4. What is the recommended way to verify Payments API transaction contents from a Solana program, if any, beyond authority-attested signatures and PDA settlement evidence?
5. For PrivateDAO VIP rooms, should PER permission accounts be delegated together with room state, or should PrivateDAO use a separate permission controller account?
6. For private payouts, should Magic Actions be the preferred path for commit + base-layer payout, or should PrivateDAO continue with explicit settle -> execute until ER-native state exists?
7. Is MagicIntentBundleBuilder the preferred SDK surface for commit-and-execute flows as of the current SDK version?
8. What fee-vault or commit-sponsorship setup would be recommended for repeated DAO rooms and GamingDAO sessions?

14. Verification Commands Used For This Report

Commands were run against a clean worktree created from origin/main.

git -C /home/x-pact/PrivateDAO fetch origin main --prune
git -C /home/x-pact/PrivateDAO worktree add --detach /tmp/privatedao-magicblock-report origin/main
git -C /tmp/privatedao-magicblock-report rev-parse HEAD
git -C /tmp/privatedao-magicblock-report log --all --date=short --pretty=format:'%h %ad %s' --grep='magicblock\|magic block\|ephemeral\|private payment\|gamingdao\|magic action' -i --max-count=120
rg -n -i "MagicBlock|magic block|ephemeral|rollup|delegate|delegat|vrf|crank|Magic Action|private payments|payment corridor|fee vault|lamportsDelegated|TEE" apps docs scripts programs package.json Anchor.toml
node -e 'const p=require("./package.json"); const all={...p.dependencies,...p.devDependencies}; console.log(Object.keys(all).filter(k=>/magic|ephemeral|rollup|er-|vrf/i.test(k)).sort())'
rg -n "MagicIntentBundleBuilder|ephemeral-rollups-sdk|lamportsDelegatedTransferIx|magic_fee_vault|#\[ephemeral\]|#\[delegate\]|#\[commit\]" .
node scripts/verify-magicblock-runtime-evidence.js
curl -fsSL https://api.privatedao.org/api/v1/magicblock/onchain-proof
curl -fsSL https://api.privatedao.org/api/v1/magicblock/health
curl -fsSL 'https://api.privatedao.org/api/v1/privacy-execution-claims/prepare?claim=magicblock-private-payments'
curl -fsSL https://api.privatedao.org/api/v1/privacy-execution-matrix
curl -fsSL https://status.magicblock.app/api/services

Verifier result:

MagicBlock runtime evidence verification: PASS

15. Engineering Conclusion

PrivateDAO already has a meaningful MagicBlock integration at the private-payment corridor and settlement-evidence layer:

• The MagicBlock route is proposal-bound.
• Corridor settlement is recorded on-chain.
• Confidential payout execution can require the MagicBlock corridor.
• Live public proof verifies the corridor PDA and finalized Solana Testnet transactions.
• Private reads stay behind MagicBlock challenge/login.
• Tests cover the main abuse paths around missing settlement, wrong operator, malformed evidence, wrong recipient, and replay.

The next protocol-level upgrade is not more frontend copy. It is direct MagicBlock ER/PER integration:

delegate room/session/payment staging state
-> run private coordination or payment staging on ER/PER
-> commit with MagicIntentBundleBuilder
-> trigger Magic Actions for base-layer payout/proof
-> expose proof through PrivateDAO's existing proof center

That would turn the current MagicBlock private payment corridor into a deeper MagicBlock-native confidential coordination runtime for PrivateDAO rooms, treasury payouts, payroll, grants, and GamingDAO rewards.