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Crossref Stats Page: Updated on May 21, 2019

MetaData Deposit
Total Records in Database105,327,449
Total Prefixes13,738
Number of Journals67,680
Number of Books1,336,844
Number of Conference Proceedings65,618
Number of Journal DOIs77,285,894
Number of Book DOIs15,324,139
Number of Conference DOIs5,822,338
Number of Components3,717,765
Number of Standards Titles387,914
Number of Standards DOIs304,261
Number of Databases25,362
Number of Database DOIs1,802,098
Number of Articles with References Deposited42,499,076
Number of Cited-By Links898,948,628
Number of DOIs with at least one cited-by link (UNDER CONSTRUCTION)0
Number of Journal Title Level DOIs 30,278
Number of Book Title Level DOIs 1,357,076
Number of ConfProc Title Level DOIs 19,818
Number of Dissertation Title Level DOIs 267,823
Number of Report Title Level DOIs 614,445
Number of Standards Title Level DOIs 303,696
Number of Database Title Level DOIs 22,327
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
(2016)6,125,8073,971,1362,154,67126,670,973
(2017)7,384,8185,109,0752,275,74331,278,043
(2018)8,265,9186,240,5712,025,34733,609,916
Apr754,175596,957157,2183,149,475
May786,709604,126182,5833,619,532
Jun989,215595,673393,5423,242,222
Jul822,896638,712184,1843,597,060
Aug874,231640,770233,4613,333,069
Sep809,045686,085122,9602,553,305
Oct849,490737,221112,2693,279,579
Nov827,655705,722121,9333,434,929
Dec780,544671,698108,8462,809,222
Jan837,106643,227193,8793,709,404
Feb739,634600,221139,4132,930,021
Mar883,267709,834173,4333,394,481
Apr911,489699,395212,0943,526,819
May617,074455,158161,9162,607,730


Monthly Query Data

MonthTotal MetaData
Queries
Total Matches%% by group
( Lib Pub Aflt )
Total DOI
Queries
Total Matches %
(2016)2,132,786,834741,439,41035%59%46%46%1,082,427,3471,001,605,89193%
(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%
Apr167,702,25457,874,18935%48%44%69%144,977,041138,223,14695%
May190,472,76563,906,60834%46%46%74%156,417,656149,214,16795%
Jun199,885,89272,625,61436%44%44%61%130,753,888124,940,78196%
Jul198,568,36266,671,38234%46%44%65%135,985,549131,058,63896%
Aug183,486,67964,678,39135%49%45%76%149,760,753144,149,65896%
Sep175,579,74255,239,39331%52%38%73%126,702,532120,759,40895%
Oct186,639,13165,918,58035%56%42%73%156,798,578149,988,86196%
Nov182,717,30663,494,72735%55%44%74%195,014,038182,442,19394%
Dec127,351,47356,427,04944%55%48%72%177,168,246170,607,39296%
Jan126,964,51763,996,54150%58%42%60%127,096,055119,483,24194%
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%
May111,252,65643,615,59939%54%63%66%98,738,78493,316,84695%


Monthly ORCID Auto-Update Data

MonthAuthors Granting
Permission
Works Added to
Authors Records
Apr19,70760,857
May21,80170,072
Jun19,69865,726
Jul20,91879,830
Aug21,02777,959
Sep21,23071,816
Oct25,02186,024
Nov24,96185,735
Dec22,76979,642
Jan28,30194,440
Feb26,03190,182
Mar26,66095,016
Apr22,58792,117
May27,05276,556

ORCID Totals

StatisticTotal
Total orcid/article pairs4,202,830
Total unique orcids1,645,077
Total works pushed1,976,836
Authors granting685,064
Authors denying476,668
Authors not responding494,607