Back to the main Crossref website
status

Crossref Stats Page: Updated on May 26, 2019

MetaData Deposit
Total Records in Database105,470,543
Total Prefixes13,767
Number of Journals67,839
Number of Books1,340,182
Number of Conference Proceedings65,697
Number of Journal DOIs77,358,251
Number of Book DOIs15,376,932
Number of Conference DOIs5,829,713
Number of Components3,725,651
Number of Standards Titles388,118
Number of Standards DOIs304,465
Number of Databases25,438
Number of Database DOIs1,802,941
Number of Articles with References Deposited42,690,479
Number of Cited-By Links903,581,637
Number of DOIs with at least one cited-by link (UNDER CONSTRUCTION)0
Number of Journal Title Level DOIs 30,361
Number of Book Title Level DOIs 1,360,421
Number of ConfProc Title Level DOIs 19,863
Number of Dissertation Title Level DOIs 267,971
Number of Report Title Level DOIs 614,669
Number of Standards Title Level DOIs 303,900
Number of Database Title Level DOIs 22,376
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
May833,811608,637225,1743,404,135


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%
May142,467,27755,480,99039%54%63%65%121,934,846115,130,52994%


Monthly ORCID Auto-Update Data

MonthAuthors Granting
Permission
Works Added to
Authors Records
Apr19,70760,857
May21,79770,072
Jun19,69765,726
Jul20,91679,830
Aug21,02777,959
Sep21,22771,816
Oct25,02186,024
Nov24,95685,735
Dec22,76279,642
Jan28,28494,440
Feb26,01490,182
Mar26,64295,016
Apr22,57392,117
May31,94594,896

ORCID Totals

StatisticTotal
Total orcid/article pairs4,236,721
Total unique orcids1,655,163
Total works pushed1,995,176
Authors granting689,860
Authors denying478,379
Authors not responding498,313