Noncurrent Crypto Asset Held Recognised As Of Acquisition Date

No definition available.

Name:	cnck_NoncurrentCryptoAssetHeldRecognisedAsOfAcquisitionDate
Namespace Prefix:	cnck_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Other Assets Recognised As Of Acquisition Date

+ References

No definition available.

+ Details

Name:	cnck_OtherAssetsRecognisedAsOfAcquisitionDate
Namespace Prefix:	cnck_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Other Current Financial Assets Recognised As Of Acquisition Date

+ References

No definition available.

+ Details

Name:	cnck_OtherCurrentFinancialAssetsRecognisedAsOfAcquisitionDate
Namespace Prefix:	cnck_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Other Noncurrent Financial Assets Recognised As Of Acquisition Date

+ References

No definition available.

+ Details

Name:	cnck_OtherNoncurrentFinancialAssetsRecognisedAsOfAcquisitionDate
Namespace Prefix:	cnck_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount recognised as of the acquisition date for cash and cash equivalents acquired in a business combination. [Refer: Cash and cash equivalents; Total for all business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 3
-IssueDate 2025-01-01
-Paragraph B64
-Subparagraph i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_CashAndCashEquivalentsRecognisedAsOfAcquisitionDate
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount recognised as of the acquisition date for deferred tax assets acquired in a business combination. [Refer: Deferred tax assets; Total for all business combinations [member]]

+ References

+ Details

Name:	ifrs-full_DeferredTaxAssetsRecognisedAsOfAcquisitionDate
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfBusinessCombinationsLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount recognised as of the acquisition date for financial liabilities assumed in a business combination. [Refer: Financial liabilities; Total for all business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 3
-IssueDate 2025-01-01
-Paragraph B64
-Subparagraph i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B
-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 3
-IssueDate 2025-01-01
-Paragraph IE72
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_IE72&doctype=Illustrative%20Examples
-URIDate 2025-03-27

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 35
-Subparagraph g
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_35_g&doctype=Standard
-URIDate 2025-03-27

Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 35
-Subparagraph g
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_35_g&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_FinancialLiabilitiesRecognisedAsOfAcquisitionDate
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount recognised as of the acquisition date for net identifiable assets acquired or liabilities assumed in a business combination. [Refer: Total for all business combinations [member]]

+ References

+ Details

Name:	ifrs-full_IdentifiableAssetsAcquiredLiabilitiesAssumed
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount recognised as of the acquisition date for plant, property and equipment acquired in a business combination. [Refer: Property, plant and equipment; Total for all business combinations [member]]

+ References

+ Details

Name:	ifrs-full_PropertyPlantAndEquipmentRecognisedAsOfAcquisitionDate
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	ifrs-full_BusinessCombinationsAxis=cnck_NextFinanceTechCoLtd.Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Reverse Recapitalization and Acquisitions of subsidiaries - Assets and liabilities assumed (Details) - JPY (¥) ¥ in Millions	Mar. 31, 2025	Mar. 14, 2025	Mar. 10, 2025
Disclosure of detailed information about business combination [line items]
Other financial liabilities	¥ (2,347)
Next Finance Tech Co, Ltd.
Disclosure of detailed information about business combination [line items]
Cash and cash equivalents		¥ 29
Other financial assets		3
Other assets		2
Property and equipment		2
Crypto asset held (non-current)		21
Other financial assets (non-current)		1
Deferred tax assets		49
Other financial liabilities		(5)
Net assets (liabilities)		¥ 102	¥ 102