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Crossref Stats Page: Updated on Oct 22, 2021

MetaData Deposit
Total Records in Database129,398,623
Total Prefixes21,809
Number of Journals95,485
Number of Books1,639,464
Number of Conference Proceedings83,192
Number of Journal DOIs91,855,889
Number of Book DOIs20,385,004
Number of Conference DOIs7,055,590
Number of Components5,276,173
Number of Standards Titles429,943
Number of Standards DOIs340,615
Number of Databases58,252
Number of Database DOIs2,216,482
Number of Articles with References Deposited53,402,950
Number of Cited-By Links1,242,024,585
Number of DOIs with at least one cited-by link (UNDER CONSTRUCTION)0
Number of Journal Title Level DOIs 44,284
Number of Book Title Level DOIs 1,660,463
Number of ConfProc Title Level DOIs 53,021
Number of Dissertation Title Level DOIs 468,741
Number of Report Title Level DOIs 692,249
Number of Standards Title Level DOIs 340,050
Number of Database Title Level DOIs 33,365
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
Oct640,888526,754114,1342,144,809


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%
Oct73,582,06636,030,96549%42%57%72%162,419,714155,691,46296%


Monthly ORCID Auto-Update Data

MonthAuthors Granting
Permission
Works Added to
Authors Records
Sep51,615217,345
Oct44,824213,521
Nov50,067212,989
Dec49,252219,210
Jan53,837231,651
Feb52,569230,211
Mar59,241280,862
Apr53,805242,060
May58,762255,426
Jun80,137301,041
Jul74,584292,899
Aug71,140280,966
Sep72,787294,529
Oct46,441200,848

ORCID Totals

StatisticTotal
Total orcid/article pairs13,140,520
Total unique orcids3,918,094
Total works pushed7,764,182
Authors granting2,080,775
Authors denying683,228
Authors not responding1,174,690