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Crossref Stats Page: Updated on Mar 7, 2021

MetaData Deposit
Total Records in Database123,224,811
Total Prefixes19,619
Number of Journals88,490
Number of Books1,554,611
Number of Conference Proceedings78,299
Number of Journal DOIs87,945,017
Number of Book DOIs19,355,139
Number of Conference DOIs6,774,383
Number of Components4,816,697
Number of Standards Titles415,900
Number of Standards DOIs326,593
Number of Databases57,406
Number of Database DOIs2,111,421
Number of Articles with References Deposited50,304,381
Number of Cited-By Links1,138,443,636
Number of DOIs with at least one cited-by link (UNDER CONSTRUCTION)0
Number of Journal Title Level DOIs 41,175
Number of Book Title Level DOIs 1,577,779
Number of ConfProc Title Level DOIs 49,663
Number of Dissertation Title Level DOIs 353,011
Number of Report Title Level DOIs 666,757
Number of Standards Title Level DOIs 326,028
Number of Database Title Level DOIs 30,990
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
Mar439,612200,642238,970707,026


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%
Mar24,578,39312,944,36153%44%40%68%28,601,99927,130,87395%


Monthly ORCID Auto-Update Data

MonthAuthors Granting
Permission
Works Added to
Authors Records
Feb40,658143,222
Mar33,744162,405
Apr34,268154,632
May58,522197,824
Jun47,846199,486
Jul40,202197,785
Aug57,581211,201
Sep51,995217,345
Oct45,457213,521
Nov50,852212,989
Dec50,148219,210
Jan55,174231,651
Feb54,379230,211
Mar12,79069,986

ORCID Totals

StatisticTotal
Total orcid/article pairs10,292,265
Total unique orcids3,257,315
Total works pushed5,685,526
Authors granting1,584,044
Authors denying641,498
Authors not responding1,049,288