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Crossref Stats Page: Updated on Oct 24, 2021

MetaData Deposit
Total Records in Database129,501,239
Total Prefixes21,816
Number of Journals95,531
Number of Books1,640,023
Number of Conference Proceedings83,215
Number of Journal DOIs91,946,224
Number of Book DOIs20,393,077
Number of Conference DOIs7,056,500
Number of Components5,277,851
Number of Standards Titles429,970
Number of Standards DOIs340,642
Number of Databases58,253
Number of Database DOIs2,216,542
Number of Articles with References Deposited53,451,251
Number of Cited-By Links1,242,855,775
Number of DOIs with at least one cited-by link (UNDER CONSTRUCTION)0
Number of Journal Title Level DOIs 44,299
Number of Book Title Level DOIs 1,660,913
Number of ConfProc Title Level DOIs 53,040
Number of Dissertation Title Level DOIs 469,114
Number of Report Title Level DOIs 692,333
Number of Standards Title Level DOIs 340,077
Number of Database Title Level DOIs 33,373
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
(2018)9,874,1177,617,9912,256,12639,854,067
(2019)11,118,4618,583,2982,535,16350,533,616
(2020)12,462,5449,986,0052,476,53945,287,268
Sep1,103,079886,336216,7434,817,711
Oct997,236855,383141,8534,543,142
Nov1,062,042886,381175,6613,539,017
Dec1,371,421859,514511,9074,895,536
Jan1,044,509813,429231,0804,375,380
Feb969,590813,687155,9034,338,423
Mar1,283,413944,477338,9365,327,406
Apr1,055,832807,704248,1286,289,466
May1,041,893837,705204,1884,464,162
Jun1,235,370898,842336,5284,692,713
Jul972,424847,497124,9273,075,538
Aug959,029783,767175,2625,030,489
Sep998,798835,853162,9453,324,506
Oct765,391600,729164,6622,477,101


Monthly Query Data

MonthTotal MetaData
Queries
Total Matches%% by group
( Lib Pub Aflt )
Total DOI
Queries
Total Matches %
(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%
(2020)1,523,069,914710,874,30447%48%49%49%1,590,084,0451,472,849,57693%
Sep123,549,99153,716,33243%48%53%71%140,308,115132,193,10594%
Oct119,202,20356,468,55047%46%54%66%145,576,877135,433,72593%
Nov111,306,54754,660,27349%43%51%65%145,617,216135,673,31193%
Dec105,326,79357,244,36754%42%52%63%125,425,079116,414,04793%
Jan123,512,84966,697,94754%42%47%73%132,310,968123,986,37694%
Feb104,387,79352,993,71051%43%51%66%126,697,909119,941,82795%
Mar125,916,24665,210,08652%45%40%68%196,377,049188,252,07696%
Apr124,028,98866,543,22354%44%47%71%198,452,792189,377,57795%
May130,660,01366,041,06551%42%54%71%198,853,578190,416,45596%
Jun122,989,67562,671,87951%41%49%66%154,723,660146,989,47495%
Jul116,492,08758,235,66050%41%55%74%155,005,627144,467,45293%
Aug124,399,06266,887,68154%43%51%72%160,011,733151,249,44895%
Sep110,966,88158,299,46853%43%59%71%266,494,876257,252,94797%
Oct80,370,42339,406,09549%42%57%72%176,780,236169,474,40896%


Monthly ORCID Auto-Update Data

MonthAuthors Granting
Permission
Works Added to
Authors Records
Sep51,615217,345
Oct44,821213,521
Nov50,067212,989
Dec49,250219,210
Jan53,835231,651
Feb52,568230,211
Mar59,239280,862
Apr53,799242,060
May58,752255,426
Jun80,127301,041
Jul74,563292,899
Aug71,130280,966
Sep72,771294,529
Oct50,056215,252

ORCID Totals

StatisticTotal
Total orcid/article pairs13,159,214
Total unique orcids3,922,197
Total works pushed7,778,575
Authors granting2,084,296
Authors denying683,465
Authors not responding1,175,151