Company: CNCKW
Filing Date: 2025-01-07
Form Type: 6-K
Source: 0001213900-25-001662
Chunk: 0

Company: Coincheck Group N.V.
Filing Date: 2025-01-07
Form: 6-K
Chunk 0
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<div align='center'>UNITED STATES SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16 UNDER

THE SECURITIES EXCHANGE ACT OF 1934

For the month of January 2025

Commission File Number:001-42438

COINCHECK GROUP N.V.

(Translation of registrant’s
name into English)

For Co-Registrant, see “Table of Co-Registrant”

Apollolaan 151

1077 AR Amsterdam

The Netherlands

(Address of principal executive offices)</div>

Indicate
by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

<div align='center'>Form 20-F
☒ Form 40-F ☐

(for registrant and co-registrant)

TABLE OF CO-REGISTRANT</div>

| Translation of co-registrant’s name into English |     | Commission File Number |     | Address of principal executive offices                |
| Coincheck, Inc.(1)                               |     | 333-279165(1)          |     | Coincheck, Inc. SHIBUYA SAKURA STAGE SHIBUYA SIDE 27F 
 1-4 Sakuragaokacho, Shibuya-ku, Tokyo                 
 150-6227 Japan                                        
 Telephone: +81-3-6416-5370                            |

| (1) | Coincheck, Inc. is filing this Form 6-K as co-registrant solely in connection with its co-registrant status in the above-referenced Registration Statement on Form F-4, related to the business combination of Coincheck Group N.V. and Thunder Bridge Capital Partners IV, Inc. |

Coincheck Group N.V. is providing the below update for Coincheck, Inc.
This information will also be posted at https://coincheck.com; information on, or accessible through, such website is not incorporated
into this Form 6-K. Coincheck Group N.V. (“CNCK” and “CNCKW”), is a global holding company, headquartered in the
Netherlands, operating in the crypto asset and Web3 domains, and is the parent company of Coincheck, Inc., which operates the regulated
crypto asset trading service “Coincheck” in Japan.

<div align='center'>Monthly