<SEC-DOCUMENT>0001193125-21-264310-index.html : 20210902
<SEC-HEADER>0001193125-21-264310.hdr.sgml : 20210902
<ACCEPTANCE-DATETIME>20210902140409
ACCESSION NUMBER:		0001193125-21-264310
CONFORMED SUBMISSION TYPE:	N-CSRS
PUBLIC DOCUMENT COUNT:		11
CONFORMED PERIOD OF REPORT:	20210630
FILED AS OF DATE:		20210902
DATE AS OF CHANGE:		20210902
EFFECTIVENESS DATE:		20210902

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BLACKROCK CORE BOND TRUST
		CENTRAL INDEX KEY:			0001160864
		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:		211232625

	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>d210240dncsrs.htm
<DESCRIPTION>BLACKROCK CORE BOND TRUST
<TEXT>
Document 1 - file: d210240dncsrs.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CERT
<SEQUENCE>2
<FILENAME>d210240dex99cert.htm
<DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 302
<TEXT>
Document 2 - file: d210240dex99cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.906CERT
<SEQUENCE>3
<FILENAME>d210240dex99906cert.htm
<DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 906
<TEXT>
Document 3 - file: d210240dex99906cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g210240dsp004a.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g210240dsp004a.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g210240dsp004b.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g210240dsp004b.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g210240g42l24.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: g210240g42l24.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g210240g46r12.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: g210240g46r12.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>g210240g72w27.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: g210240g72w27.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>g210240leaf.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: g210240leaf.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>g210240s1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 10 - file: g210240s1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>g210240s3.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 11 - file: g210240s3.jpg

</DOCUMENT>
</SEC-DOCUMENT>