<SEC-DOCUMENT>0001193125-24-213417-index.html : 20240905
<SEC-HEADER>0001193125-24-213417.hdr.sgml : 20240905
<ACCEPTANCE-DATETIME>20240904210820
ACCESSION NUMBER:		0001193125-24-213417
CONFORMED SUBMISSION TYPE:	N-CSRS
PUBLIC DOCUMENT COUNT:		18
CONFORMED PERIOD OF REPORT:	20240630
FILED AS OF DATE:		20240905
DATE AS OF CHANGE:		20240904
EFFECTIVENESS DATE:		20240905

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BLACKROCK CORE BOND TRUST
		CENTRAL INDEX KEY:			0001160864
		ORGANIZATION NAME:           	
		IRS NUMBER:				522346891
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1031

	FILING VALUES:
		FORM TYPE:		N-CSRS
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-10543
		FILM NUMBER:		241279617

	BUSINESS ADDRESS:	
		STREET 1:		100 BELLEVUE PARKWAY
		STREET 2:		MUTUAL FUND DEPARTMENT
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19809
		BUSINESS PHONE:		888-825-2257

	MAIL ADDRESS:	
		STREET 1:		100 BELLEVUE PARKWAY
		STREET 2:		MUTUAL FUND DEPARTMENT
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19809
</SEC-HEADER>
<DOCUMENT>
<TYPE>N-CSRS
<SEQUENCE>1
<FILENAME>d883088dncsrs.htm
<DESCRIPTION>BLACKROCK CORE BOND TRUST
<TEXT>
Document 1 - file: d883088dncsrs.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CERT
<SEQUENCE>2
<FILENAME>d883088dex99cert.htm
<DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 302
<TEXT>
Document 2 - file: d883088dex99cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.906CERT
<SEQUENCE>3
<FILENAME>d883088dex99906cert.htm
<DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 906
<TEXT>
Document 3 - file: d883088dex99906cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.SCH
<SEQUENCE>4
<FILENAME>cik0001160864-20240630.xsd
<DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
<TEXT>
Document 4 - file: cik0001160864-20240630.xsd

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<TYPE>EX-101.DEF
<SEQUENCE>5
<FILENAME>cik0001160864-20240630_def.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE
<TEXT>
Document 5 - file: cik0001160864-20240630_def.xml

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<TYPE>EX-101.LAB
<SEQUENCE>6
<FILENAME>cik0001160864-20240630_lab.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE
<TEXT>
Document 6 - file: cik0001160864-20240630_lab.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.PRE
<SEQUENCE>7
<FILENAME>cik0001160864-20240630_pre.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE
<TEXT>
Document 7 - file: cik0001160864-20240630_pre.xml

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<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>g883088img5d42467e2.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: g883088img5d42467e2.jpg

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<SEQUENCE>9
<FILENAME>g883088imgb90ac0241.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: g883088imgb90ac0241.jpg

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<TYPE>XML
<SEQUENCE>11
<FILENAME>R1.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 11 - file: R1.htm

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<DOCUMENT>
<TYPE>EXCEL
<SEQUENCE>12
<FILENAME>Financial_Report.xlsx
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 12 - file: Financial_Report.xlsx

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>13
<FILENAME>Show.js
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 13 - file: Show.js

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>14
<FILENAME>report.css
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 14 - file: report.css

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>16
<FILENAME>FilingSummary.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 16 - file: FilingSummary.html

Document 16 - RAW XML: FilingSummary.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>JSON
<SEQUENCE>19
<FILENAME>MetaLinks.json
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 19 - file: MetaLinks.json

</DOCUMENT>
<DOCUMENT>
<TYPE>ZIP
<SEQUENCE>20
<FILENAME>0001193125-24-213417-xbrl.zip
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<TEXT>
Document 20 - file: 0001193125-24-213417-xbrl.zip

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<TYPE>XML
<SEQUENCE>21
<FILENAME>d883088dncsrs_htm.xml
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<TEXT>
Document 21 - file: d883088dncsrs_htm.html

Document 21 - RAW XML: d883088dncsrs_htm.xml

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