<SEC-DOCUMENT>0001193125-17-332118-index.html : 20171103
<SEC-HEADER>0001193125-17-332118.hdr.sgml : 20171103
<ACCEPTANCE-DATETIME>20171103104207
ACCESSION NUMBER:		0001193125-17-332118
CONFORMED SUBMISSION TYPE:	N-CSR
PUBLIC DOCUMENT COUNT:		20
CONFORMED PERIOD OF REPORT:	20170831
FILED AS OF DATE:		20171103
DATE AS OF CHANGE:		20171103
EFFECTIVENESS DATE:		20171103

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-CSR
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-10543
		FILM NUMBER:		171175045

	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-CSR
<SEQUENCE>1
<FILENAME>d442727dncsr.htm
<DESCRIPTION>BLACKROCK CORE BOND TRUST
<TEXT>
Document 1 - file: d442727dncsr.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CERT
<SEQUENCE>2
<FILENAME>d442727dex99cert.htm
<DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 302
<TEXT>
Document 2 - file: d442727dex99cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.906CERT
<SEQUENCE>3
<FILENAME>d442727dex99906cert.htm
<DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 906
<TEXT>
Document 3 - file: d442727dex99906cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.PROXY.POL
<SEQUENCE>4
<FILENAME>d442727dex99proxypol.htm
<DESCRIPTION>PROXY VOTING POLICY
<TEXT>
Document 4 - file: d442727dex99proxypol.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CORP.GOV
<SEQUENCE>5
<FILENAME>d442727dex99corpgov.htm
<DESCRIPTION>GLOBAL CORPORATE GOVERNANCE AND ENGAGEMENT PRINCIPLES
<TEXT>
Document 5 - file: d442727dex99corpgov.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g44272755544.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: g44272755544.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g442727black.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: g442727black.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>g442727canu.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: g442727canu.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>g442727g00m73.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: g442727g00m73.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>g442727g62z36.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 10 - file: g442727g62z36.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>g442727g65b16.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 11 - file: g442727g65b16.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>g442727g83z09.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 12 - file: g442727g83z09.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>g442727g98u13.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 13 - file: g442727g98u13.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>14
<FILENAME>g442727hbb7.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 14 - file: g442727hbb7.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>15
<FILENAME>g442727head333.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 15 - file: g442727head333.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>16
<FILENAME>g442727leaf.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 16 - file: g442727leaf.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>17
<FILENAME>g442727newblack.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 17 - file: g442727newblack.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>18
<FILENAME>g442727small.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 18 - file: g442727small.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>19
<FILENAME>g449001photo_01mips.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 19 - file: g449001photo_01mips.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>20
<FILENAME>g449001sig_01mips.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 20 - file: g449001sig_01mips.jpg

</DOCUMENT>
</SEC-DOCUMENT>