Science And Education x402 offerings

Works that entered the public domain on 1 January 2017 in life-plus-70 countries (authors who died in 1946): catalogued books with free editions linked where they exist. Public Domain Day lists for 2017. $0.01 per page of 20.

Works that entered the public domain on 1 January 2018 in life-plus-70 countries (authors who died in 1947): catalogued books with free editions linked where they exist. Public Domain Day lists for 2018. $0.01 per page of 20.

Works that entered the public domain on 1 January 2019 in life-plus-70 countries (authors who died in 1948): catalogued books with free editions linked where they exist. Public Domain Day lists for 2019. $0.01 per page of 20.

Works that entered the public domain on 1 January 2020 in life-plus-70 countries (authors who died in 1949): catalogued books with free editions linked where they exist. Public Domain Day lists for 2020. $0.01 per page of 20.

Works that entered the public domain on 1 January 2021 in life-plus-70 countries (authors who died in 1950): catalogued books with free editions linked where they exist. Public Domain Day lists for 2021. $0.01 per page of 20.

Works that entered the public domain on 1 January 2022 in life-plus-70 countries (authors who died in 1951): catalogued books with free editions linked where they exist. Public Domain Day lists for 2022. $0.01 per page of 20.

Works that entered the public domain on 1 January 2023 in life-plus-70 countries (authors who died in 1952): catalogued books with free editions linked where they exist. Public Domain Day lists for 2023. $0.01 per page of 20.

Works that entered the public domain on 1 January 2024 in life-plus-70 countries (authors who died in 1953): catalogued books with free editions linked where they exist. Public Domain Day lists for 2024. $0.01 per page of 20.

Works that entered the public domain on 1 January 2025 in life-plus-70 countries (authors who died in 1954): catalogued books with free editions linked where they exist. Public Domain Day lists for 2025. $0.01 per page of 20.

Works that entered the public domain on 1 January 2026 in life-plus-70 countries (authors who died in 1955): catalogued books with free editions linked where they exist. Public Domain Day lists for 2026. $0.01 per page of 20.

Works that will enter the public domain on 1 January 2027 in life-plus-70 countries (authors who died in 1956): catalogued books with free editions linked where they exist. Public Domain Day lists for 2027. $0.01 per page of 20.

Works that will enter the public domain on 1 January 2028 in life-plus-70 countries (authors who died in 1957): catalogued books with free editions linked where they exist. Public Domain Day lists for 2028. $0.01 per page of 20.

Works that will enter the public domain on 1 January 2029 in life-plus-70 countries (authors who died in 1958): catalogued books with free editions linked where they exist. Public Domain Day lists for 2029. $0.01 per page of 20.

Works that will enter the public domain on 1 January 2030 in life-plus-70 countries (authors who died in 1959): catalogued books with free editions linked where they exist. Public Domain Day lists for 2030. $0.01 per page of 20.

Works that will enter the public domain on 1 January 2031 in life-plus-70 countries (authors who died in 1960): catalogued books with free editions linked where they exist. Public Domain Day lists for 2031. $0.01 per page of 20.

Works that will enter the public domain on 1 January 2032 in life-plus-70 countries (authors who died in 1961): catalogued books with free editions linked where they exist. Public Domain Day lists for 2032. $0.01 per page of 20.

Works that will enter the public domain on 1 January 2033 in life-plus-70 countries (authors who died in 1962): catalogued books with free editions linked where they exist. Public Domain Day lists for 2033. $0.01 per page of 20.

Works that will enter the public domain on 1 January 2034 in life-plus-70 countries (authors who died in 1963): catalogued books with free editions linked where they exist. Public Domain Day lists for 2034. $0.01 per page of 20.

Works that will enter the public domain on 1 January 2035 in life-plus-70 countries (authors who died in 1964): catalogued books with free editions linked where they exist. Public Domain Day lists for 2035. $0.01 per page of 20.

Works that entered the public domain on 1 January 2026 in life-plus-70 countries: catalogued books whose author died in 1955, with free editions linked where available. $0.01 per page of 20.

Works entering the public domain on 1 January 2027 in life-plus-70 countries (UK, EU, Australia, Canada for authors who died after 1971): books in the catalogue whose author died in 1956, with download links where a free edition already exists. Public Domain Day planning for publishers, librarians and agents. $0.01 per page of 20.

Fit supplied substrate/rate pairs by reciprocal Lineweaver-Burk OLS; report Km, Vmax and residuals. Exposes noise bias; no parameter confidence interval.

Upcoming space launches worldwide from Launch Library 2 (The Space Devs): launch window (NET, window start/end), provider, pad and location, mission name/type/orbit, go/TBD status. Query: ?limit=10&search=falcon&provider=SpaceX&net_gte=2026-08-01&net_lte=2026-09-01 (all optional). Served from a 1h cache (upstream is rate-limited); count field gives the full upcoming total.

Check up to ten DOI citations against source registries, compare optional titles, and expose publication update signals. Use to detect incorrect references.