Crypto Card Issuer · Review

Tkn (Monolith) Review 2026: Non-Custodial Crypto Debit Card

Tkn, branded Monolith and formerly TokenCard, pairs a non-custodial Ethereum contract wallet with a debit card. Its TKN token trades thinly, and fees and current service status should be checked before use.

Ethereum

By the DappsAtlas editorial team · Updated Nov 5, 2026

DappsAtlas score

4.5/10

Weak

Our verdict on Tkn

4.5/10

Tkn, or Monolith, suits experienced Ethereum users who want to spend ETH and ERC-20 tokens from a wallet they control. Its main strength is the non-custodial design paired with a debit card. The main caveat is the gaps: fees, limits, supported regions and audits are not published in the sources reviewed, and the TKN token trades very thinly. Confirm that the service is active and read the current terms first.

Score breakdown

How Tkn scores

Security: n/a
Ease of use: n/a
Fees: n/a
Features: 5.5/10

Scores run from 0 to 10 and are based only on facts we could verify. Where information was missing we mark the score n/a rather than guess.

What is Tkn?

Tkn is the project better known as Monolith, the trading name of Token Group Limited, which was incorporated in 2017. One review site reports it was founded by Mel Gelderman and David Hoggard and was called TokenCard until a rebrand in 2019.

The product is a non-custodial contract wallet on Ethereum paired with a debit card. The idea is that users keep control of their ETH and ERC-20 tokens and can still spend them in shops and online. That sits in the crypto card issuer category.

The project also has a token, TKN. Price pages show it trading at a few cents, but quotes differ between sources and the reported volume is tiny, so it is a thinly traded asset. The project's fees, limits, supported regions and audit history are not published in the material reviewed.

How Tkn works

A contract wallet is a smart contract on Ethereum that holds your tokens and follows programmed rules. Because the user controls it, the setup is described as non-custodial. The company does not hold your crypto in the way an exchange does.

The card links that wallet to ordinary card payments. When you pay at a merchant, the crypto needs to be converted into the local currency in some way. How Monolith handles that step, including pricing and settlement, is not described in the material reviewed.

TKN is the project's own token on Ethereum. What it does inside the product today, such as fee discounts, rewards or governance, is not stated in the sources reviewed.

5 features

Key features

Non-custodial contract wallet

The wallet is described as a non-custodial contract wallet, so the user controls the assets rather than a company holding them.

Crypto debit card

A debit card is paired with the wallet so users can spend ETH and ERC-20 tokens in real-world purchases.

Ethereum-based design

The product is built on the Ethereum network, so it works with ETH and tokens that follow the ERC-20 standard.

TKN token

TKN is the project's own token, listed on price trackers under the Monolith name and tied to the earlier TokenCard brand.

Named company and founders

The operator is Token Group Limited, incorporated in 2017. One review site names Mel Gelderman as CEO and David Hoggard as strategy director.

Pros and cons

What we like

Non-custodial design means users, not the company, hold the funds.
Built on Ethereum, so it supports ETH and ERC-20 tokens.
Named operating company, incorporated in 2017, with named founders.
Targets a real use case: spending crypto at ordinary merchants.
Longstanding brand history, from TokenCard to Monolith.

Watch out for

Trading in the TKN token looks very thin, with a reported 24-hour volume of well under one euro on one price page.
Prices for TKN differ widely between sources, so the token's value is hard to pin down.
Card fees, limits, supported countries and KYC rules are not stated in the material reviewed.
No audit reports or security track record are cited, so smart-contract risk can't be judged.
Whether card issuance is still open and supported should be checked directly with the project before relying on it.
Spending crypto on a card can create a taxable event in many countries.

Tkn fees

Fees for the card, wallet or any currency conversion are not published in the material reviewed. Check the official site or app for the current schedule before you load or spend funds.

The usual costs on crypto cards are Ethereum network fees for moving funds, conversion spreads when crypto is turned into local currency, and possibly card issuance or ATM charges. Which of these apply to Monolith is not confirmed here.

Is Tkn safe?

The wallet is described as non-custodial, which removes the risk of an exchange-style custodian failing with your funds. It does not remove smart-contract risk, phishing or key loss. No audit reports, bug bounties or incident history are cited in the material reviewed.

Card programs are normally run with a licensed issuing partner and carry identity checks, but the regulatory setup behind Monolith is not described here. The company is named as Token Group Limited, with a 2017 incorporation. Confirm the current service status and your local rules before relying on it. TKN is a volatile, thinly traded token, and you could lose your whole stake.

6 steps

How to get started with Tkn

1
Confirm on the project's official channels that card issuance and support are still active in your country.
2
Read the current fee schedule, spending limits and identity-check requirements before applying.
3
Set up a self-custody Ethereum wallet and back up the recovery phrase offline.
4
Start with a small amount of ETH or an ERC-20 token to test the process.
5
Apply for the card if it is available to you and complete any identity checks requested.
6
Keep records of card spending, since it may be a taxable disposal of crypto where you live.

Who Tkn is for

Tkn suits crypto holders already comfortable with self-custody on Ethereum who want to spend tokens at ordinary merchants. It is less suited to anyone who needs clear published fees and limits up front, or who wants to trade the TKN token in size.

Tkn FAQs

What is Tkn (Monolith)?

Monolith is the trading name of Token Group Limited, incorporated in 2017. It offers a non-custodial contract wallet on Ethereum that is paired with a debit card, so users can spend ETH and ERC-20 tokens in everyday purchases. One review site reports it was formerly called TokenCard.

Was Monolith previously called TokenCard?

Yes. One review site reports the company was known as TokenCard until a rebrand in 2019. The TKN ticker comes from that earlier name.

How does the Monolith card work?

The card is described as a debit card linked to a non-custodial contract wallet. In this design, the wallet holds your crypto and the card lets you spend it at merchants that accept card payments. Exact settlement and conversion details are not published in the material reviewed.

What is the TKN token?

TKN is the project's own token on Ethereum. Price pages list it at only a few cents, and the quoted figures vary a lot between sources. Reported trading volume is very small, so buying or selling any size may be difficult.

What does the Monolith card cost?

The card fees, spending limits and country availability are not stated in the sources reviewed. Check these on the project's official channels before you sign up or deposit funds.

Is Monolith safe?

It is described as non-custodial, which means you control the wallet rather than a company holding your funds. That reduces counterparty risk, but smart-contract bugs, phishing and lost keys remain. No audit details are given in the sources reviewed.

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