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Crossref Stats Page: Updated on Mar 31, 2020

MetaData Deposit
Total Records in Database113,243,641
Total Prefixes16,256
Number of Journals77,147
Number of Books1,426,703
Number of Conference Proceedings71,281
Number of Journal DOIs82,317,983
Number of Book DOIs16,943,467
Number of Conference DOIs6,303,294
Number of Components4,008,743
Number of Standards Titles400,695
Number of Standards DOIs311,753
Number of Databases30,001
Number of Database DOIs1,916,175
Number of Articles with References Deposited46,286,811
Number of Cited-By Links1,014,084,723
Number of DOIs with at least one cited-by link (UNDER CONSTRUCTION)0
Number of Journal Title Level DOIs 35,542
Number of Book Title Level DOIs 1,445,984
Number of ConfProc Title Level DOIs 45,645
Number of Dissertation Title Level DOIs 313,676
Number of Report Title Level DOIs 627,289
Number of Standards Title Level DOIs 311,188
Number of Database Title Level DOIs 27,869
Number of Unique DOIs with FundRef data 2,947,660

Monthly Deposit Data

MonthTotal Records
Added
Total Current
Deposits
Total BackFile
Deposits
Total Records
Updated
(2017)7,384,8185,109,0752,275,74331,278,043
(2018)8,265,9186,240,5712,025,34733,609,916
(2019)9,158,2227,018,0372,140,18541,323,449
Feb739,634600,221139,4132,930,021
Mar883,267709,834173,4333,394,481
Apr911,489699,395212,0943,526,819
May1,022,569765,045257,5244,071,354
Jun858,438701,512156,9264,128,236
Jul907,844740,353167,4913,389,352
Aug923,789722,202201,5874,967,915
Sep974,995676,754298,2415,638,285
Oct1,099,091759,494339,5975,567,582
Nov1,054,714806,270248,4445,685,991
Dec905,525758,991146,5343,524,176
Jan955,456716,188239,2683,859,979
Feb1,047,147798,319248,8283,090,829
Mar847,971698,250149,7213,241,092


Monthly Query Data

MonthTotal MetaData
Queries
Total Matches%% by group
( Lib Pub Aflt )
Total DOI
Queries
Total Matches %
(2017)2,104,222,315726,991,60435%51%40%40%1,522,141,0931,397,871,16892%
(2018)2194087319754,970,92334%51%43%43%1,823,393,3791,738,885,21895%
(2019)1,656,796,256783,711,58547%53%51%51%1,848,492,2611,716,370,97493%
Feb141,564,96577,731,76055%59%50%68%131,022,077123,932,71995%
Mar128,308,24168,458,71453%59%53%67%155,800,023147,005,05794%
Apr149,186,03668,873,98446%56%58%68%149,987,175141,707,40594%
May172,624,83868,086,94639%54%61%66%150,178,136141,697,07594%
Jun129,897,36152,710,69141%55%51%68%263,675,557214,375,45181%
Jul124,518,87358,381,31747%52%52%72%152,592,199145,168,55395%
Aug141,232,76259,310,35942%49%53%69%148,616,500141,484,67595%
Sep136,632,17157,991,33642%50%46%74%157,467,989150,756,19896%
Oct149,184,40174,728,38450%50%52%74%183,667,799176,054,69696%
Nov135,248,39567,419,62150%50%47%74%123,589,016116,195,04794%
Dec121,433,69666,021,93254%45%54%71%104,799,73598,510,85794%
Jan110,538,14564,382,61958%49%56%69%112,727,280104,897,24493%
Feb98,693,81661,547,32962%50%59%74%125,112,383117,317,15894%
Mar120,750,27959,237,31049%52%49%75%136,281,249128,204,68394%


Monthly ORCID Auto-Update Data

MonthAuthors Granting
Permission
Works Added to
Authors Records
Feb25,62690,182
Mar26,11395,016
Apr21,98092,117
May36,919117,372
Jun25,00098,685
Jul29,288114,941
Aug35,179117,758
Sep24,973103,458
Oct44,206170,643
Nov36,766132,502
Dec29,045124,782
Jan38,714143,637
Feb41,966143,222
Mar35,222158,158

ORCID Totals

StatisticTotal
Total orcid/article pairs6,496,329
Total unique orcids2,302,668
Total works pushed3,325,438
Authors granting1,032,299
Authors denying560,445
Authors not responding723,185