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Crossref Stats Page: Updated on Mar 5, 2021

MetaData Deposit
Total Records in Database123,056,436
Total Prefixes19,586
Number of Journals88,432
Number of Books1,554,255
Number of Conference Proceedings78,275
Number of Journal DOIs87,921,924
Number of Book DOIs19,216,083
Number of Conference DOIs6,771,664
Number of Components4,815,110
Number of Standards Titles415,879
Number of Standards DOIs326,572
Number of Databases57,404
Number of Database DOIs2,111,319
Number of Articles with References Deposited50,275,409
Number of Cited-By Links1,137,934,513
Number of DOIs with at least one cited-by link (UNDER CONSTRUCTION)0
Number of Journal Title Level DOIs 41,149
Number of Book Title Level DOIs 1,577,162
Number of ConfProc Title Level DOIs 49,649
Number of Dissertation Title Level DOIs 352,918
Number of Report Title Level DOIs 666,672
Number of Standards Title Level DOIs 326,007
Number of Database Title Level DOIs 30,974
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
Feb1,047,147798,319248,8283,090,829
Mar923,508756,112167,3963,433,258
Apr1,266,1511,056,746209,4053,795,720
May887,638776,319111,3193,292,255
Jun927,909803,147124,7623,299,087
Jul1,047,460834,077213,3833,126,547
Aug873,497757,483116,0143,594,187
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
Mar236,948138,18498,764474,787


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%
Feb98,693,81661,547,32962%50%59%74%125,112,383117,317,15894%
Mar125,939,23661,708,47349%52%49%75%141,311,118132,962,14894%
Apr163,869,67260,700,02737%53%47%76%148,994,557137,748,84292%
May143,139,28463,945,82845%51%44%78%141,096,791123,061,48387%
Jun147,525,80665,279,79544%50%43%74%124,779,394115,747,95293%
Jul131,115,28853,047,04940%47%40%67%122,865,216113,416,05792%
Aug142,863,13358,173,66241%48%48%70%116,270,019107,984,50493%
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%
Mar16,503,8888,817,69353%44%46%71%20,206,32419,146,69495%


Monthly ORCID Auto-Update Data

MonthAuthors Granting
Permission
Works Added to
Authors Records
Feb40,658143,222
Mar33,744162,405
Apr34,271154,632
May58,526197,824
Jun47,848199,486
Jul40,203197,785
Aug57,584211,201
Sep52,002217,345
Oct45,469213,521
Nov50,869212,989
Dec50,166219,210
Jan55,197231,651
Feb54,431230,211
Mar9,80857,299

ORCID Totals

StatisticTotal
Total orcid/article pairs10,272,263
Total unique orcids3,252,395
Total works pushed5,672,839
Authors granting1,581,207
Authors denying641,136
Authors not responding1,047,457