Consultation on the architecture of multisig wallets for USDT (TRON, BSC, Ethereum)

Budget: 2700 PLN Deadline: 5 days

Olexiy, for the treasury with USDT in TRON, BSC, and Ethereum, it is critically important not just to have "multisig," but to ensure the proper distribution of risk among networks and roles. I can provide a practical architecture: I will compare Safe/Fireblocks/BitGo/Cobo and the native TRON multisig, propose a 2-of-3 scheme or another according to your limits, as well as regulations for loss/compromise of keys. I have experience implementing complex payment circuits and will help with a clear launch plan.

Budget: 2700 PLN Deadline: 5 days

Hello. I was interested in your project due to the combination of system architecture, risk management, and decision analysis for several blockchain networks.

I want to be transparent right away: I do not position myself as a specialist with confirmed production cases of implementing TRON multisig for high-load crypto processing. My strengths lie in business and system analysis, platform comparison, requirement formalization, modeling of roles, risks, and operational procedures.

I am ready to carry out a separate discovery phase:
- gather and formalize requirements for the treasury infrastructure;
- compare a single custodial platform and a combined model for EVM and TRON;
- prepare a solution matrix based on criteria of security, network support, automation, cost, and operational risks;
- propose a draft model of signatures, roles, and limits for different types of payments;
- describe scenarios of loss, compromise, and key rotation;
- formulate a step-by-step implementation plan and a list of questions that need to be checked with a relevant blockchain security specialist or custody solution provider.

The result will be a structured document comparing options, recommending a preliminary architecture, risks, and a plan for next steps. I recommend additionally validating the final production design with a specialist who has confirmed practical experience specifically with TRON multisig. Expand

Budget: 1200 PLN Deadline: 3 days

Good day. For such a consultation, I would allocate 3 working days - first, a comparison of solutions, then the architecture of signatures and procedures, and finally a brief implementation plan and risks. 200 PLN for such a topic unfortunately does not correspond to the level of responsibility - we are talking about treasury funds, keys, and operational limits, so it's better not to economize at the design stage =/

I work with the architecture of complex systems where stability, roles, access, action audits, and financial security are important. In your case, a key nuance is not just 2-of-3, but different scenarios for TRON and EVM networks, daily limits, emergency procedures, separation of hot-warm-cold levels, rules for loss or compromise of keys.

We can prepare a practical recommendation - whether to take a single custodial platform for all three networks, or to separate EVM through Safe or another approach and TRON through a separate mechanism. In the end, it will not be a general lecture, but a working scheme - roles, thresholds, tools, risks, implementation order, and what exactly to check before transferring real amounts.

A few relevant examples of our experience:
> https://business.ingello.com/fractal - complex architecture of automation and agent processes, similar in level of systemic thinking
> https://business.ingello.com/vorfahr - product and operational automation with high reliability requirements
> https://systems-fl.ingello.com/ua - main page of Ingello Systems for the exchange

I would like to clarify 2 things to avoid shooting a cannon at fog:
> what are the approximate daily volumes of USDT and how many people can realistically be signatories
> are you considering Fireblocks, BitGo, Cobo as paid custodial solutions, or do you want a maximally self-custody architecture? Expand

Budget: 200 PLN Deadline: 2 days

Good day! We have experience in designing secure architectures for working with multisig wallets in TRON, BSC, and Ethereum networks. We implement this through smart contract analysis and setting up access policies to protect treasury funds during high transaction volumes. We will provide professional recommendations on minimizing risks and optimizing gas costs.

Budget: 1000 PLN Deadline: 1 day

Hello, Alex.
I will conduct a consultation today or on Thursday.
Message me privately.

Budget: 5000 PLN Deadline: 15 days

# Proposal for Independent Expert Consultation on Multisig Treasury Architecture

Hello,

I would be glad to assist with designing a secure multisignature architecture for your treasury infrastructure handling high-volume USDT transactions across **TRON (TRC20), Ethereum (ERC20), and BNB Smart Chain (BEP20)**.

I have practical experience designing and reviewing secure wallet architectures, multisig implementations, and operational security procedures for cryptocurrency treasury management. My focus is not only on selecting the right technology but also on creating an operational model that balances security, transaction speed, and business continuity.

### Scope of Work

As part of this engagement, I will deliver:

* **Market evaluation of multisig solutions**

* Compare Safe (Gnosis Safe), Fireblocks, BitGo, Cobo, TRON native multisig, and other relevant platforms.
* Analyze advantages, limitations, operational costs, and security trade-offs.
* Recommend either:

* a unified custody platform supporting all three networks, or
* a hybrid architecture using dedicated solutions for EVM chains and TRON.

* **Treasury multisig architecture**

* Design the optimal signature policy (e.g., 2-of-3, 3-of-5, or a hybrid model).
* Define signer roles and responsibilities.
* Separate operational wallets from treasury reserves.
* Establish approval thresholds for routine, high-value, and emergency transactions.

* **Key management strategy**

* Recommendations for hardware wallets, HSMs, and secure key storage.
* Geographic and organizational distribution of signing keys.
* Backup, recovery, and rotation procedures.
* Incident response plan for lost or compromised keys.

* **Implementation roadmap**

* Step-by-step deployment plan.
* Migration strategy from the current wallet setup.
* Operational procedures and security best practices.
* Risks, mitigations, and recommended testing before production.

### Deliverables

You will receive a comprehensive implementation document including:

* Recommended wallet architecture
* Technology selection with justification
* Multisig configuration
* Key management policy
* Transaction approval workflow
* Disaster recovery procedures
* Security recommendations
* Practical implementation roadmap Expand

Budget: 1200 PLN Deadline: 3 days

Good day. My specialization is custody architecture and compliance for crypto companies: I built a key management function and interaction with licensed exchanges (OKX, Kraken, Bybit, Binance, Coinify, Safello) within the framework of VASP licensing in Lithuania, including key access procedures, delegation of authority, and reporting to the regulator (FNTT). Regarding your request, I see three specific branches:
• choice of custody model: a single platform or a combination of separate solutions for EVM and TRON;
• signature management model and distribution of responsibility between roles depending on the types of operations;
• key management strategy, including access recovery procedures and response to their compromise.
As a result, you will receive a comparative assessment of available solutions, a recommended custody architecture, a model for the distribution of roles and keys, signing policies for different types of operations, and a step-by-step implementation plan.

Budget: 1800 PLN Deadline: 3 days

We already have a practically ready scheme for this type of tasks - it can be quickly adapted to your roles, limits, and networks, we can discuss it here in the chat of the marketplace, I am available ))

200 PLN will only cover a brief initial thought, while a full consultation with written architecture, risks, and implementation plan will be approximately 1800 PLN for 3 working days.

We can conduct an independent review of Safe/Gnosis, Fireblocks, BitGo, Cobo, native TRON multisig, and practically compare a single custodial platform with a combination of EVM plus TRON.

The result - a recommended 2-of-3 signature scheme or another, a role matrix, thresholds for quick and large payments, rules for storing keys on hardware wallets or HSM, scenarios for loss or compromise of the key.

- What is your daily volume and how many payments need to be processed without delay?
- Who can realistically be signatories - owner, CFO, operations manager, external control?

Public cases not about crypto wallets, but close in architectural complexity, roles, and critical operations:
- https://business.ingello.com/platforma - corporate platform with roles, approvals, and complex business logic
- https://business.ingello.com/prime-eva - high-load operational processes, integrations, and reliability requirements

Team page for FLH - https://systems-fl.ingello.com/ua

In such systems, it is better to think through access rules well once than to heroically extinguish a fire later =/ Expand