National Digital Preservation Program, China
1997-2025
Preserved
2025-10-23
Preserved : 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 3)
National Digital Preservation Program, China
1997-2025
Preserved
2025-12-04
Preserved : 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 3)
Library of Congress
1988-2024
Preserved
2025-04-07
24 (3); 26 (4); 29 (S1, S2); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 45 (1, 4); 50 (2, 3); 51 (2); 52 (1 to 4); 53 (1 to 4); 54 (1 to 3); 55 (1, 3); 56 (1 to 4); 57 (1 to 4); 58 (1, 3, 4); 59 (1 to 4); 60 (1 to 4); 61 (3); 62 (1)
Portico
1963-2012
Preserved
2026-02-12
Preserved : 1963: 1(1-4), 1964: 2(1-4), 1965: 3(1-4), 1966: 4(1-4), 1967: 5(1-4), 1968: 6(1-4), 1969: 7(1-2), 1970: 8(1-4), 1971: 9(1-4), 1972: 10(1-4), 1973: 11(1-4), 1974: 12(1-4), 1975: 13(1-5), 1976: 14(1-4), 1977: 15(1-4), 1978: 16(1-4), 1979: 17(1-8), 1980: 18(1-4), 1981: 19(1-4), 1982: 20(1-4), 1983: 21(1-8), 1984: 22(1-4), 1985: 23(1-4), 1986: 24(1-4), 1987: 25(1-8), 1988: 26(1-4), 1989: 27(1-4), 1990: 28(1-4), 1991: 29(1-4), 1992: 30(1-4), 1993: 31(1-4), 1994: 32(1-4), 1995: 33(1-4), 1996: 34(1-4), 1997: 35(1-4), 1998: 36(1-4), 1999: 37(1-4), 2000: 38(1-4), 2001: 39(1-4), 2002: 40(1-4), 2003: 41(1-4), 2004: 42(1-4), 2005: 43(1-4), 2006: 44(1-4), 2007: 45(1-4), 2008: 46(1-4), 2009: 47(1-4), 2010: 48(1-4), 2011: 49(1), 2012: 50(1)
CLOCKSS Archive
1963-2025
Preserved
2026-02-09
1 to 63
Portico
1963-2026
Preserved
2026-02-12
Preserved : 1963: 1(1-4), 1964: 2(1-4), 1965: 3(1-4), 1966: 4(1-4), 1967: 5(1-4), 1968: 6(1-4), 1969: 7(1-4), 1970: 8(1-4), 1971: 9(1-4), 1972: 10(1-4), 1973: 11(1-4), 1974: 12(1-4), 1975: 13(1-5), 1976: 14(1-4), 1977: 15(1-4), 1978: 16(1-4), 1979: 17(1-8), 1980: 18(1-4), 1981: 19(1-4), 1982: 20(1-4), 1983: 21(1-8), 1984: 22(1-4), 1985: 23(1-4), 1986: 24(1-4), 1987: 25(1-8), 1988: 26(1-4), 1989: 27(1-4), 1990: 28(1-4), 1991: 29(1, S 1, 2, S 2, 3-4), 1992: 30(1-4), 1993: 31(1-4), 1994: 32(1-4), 1995: 33(1, S 1, 2, S 2, 3-4), 1996: 34(1-4), 1997: 35(1-4), 1998: 36(1-4), 1999: 37(1-4), 2000: 38(1-4), 2001: 39(1-4), 2002: 40(1-4), 2003: 41(1-4), 2004: 42(1-4), 2005: 43(1-4), 2006: 44(1-4), 2007: 45(1-4), 2008: 46(1-4), 2009: 47(1-4), 2010: 48(1-4), 2011: 49(1-4), 2012: 50(1-4), 2013: 51(1-4), 2014: 52(1-4), 2015: 53(1-4), 2016: 54(1-4), 2017: 55(1-4), 2018: 56(1-4), 2019: 57(1-4), 2020: 58(1-4), 2021: 59(1-4), 2022: 60(1-4), 2023: 61(1-4), 2024: 62(1-4), 2025: 63(1, 3-4), 2026: 64(1)