diff --git a/28.1rc2/willcl-ark/all.SHA256SUMS b/28.1rc2/willcl-ark/all.SHA256SUMS
new file mode 100644
index 0000000000..53909808cb
--- /dev/null
+++ b/28.1rc2/willcl-ark/all.SHA256SUMS
@@ -0,0 +1,25 @@
+575f056d0b3ac8e1eb3bc65799fc1ead264d1237e15ad9f4dce0295b92b0ba8f  bitcoin-28.1rc2-aarch64-linux-gnu-debug.tar.gz
+af9c0d7177f8171518bedde2e8b02b19de8059fb93deb4715d1e28a0d72c6c3f  bitcoin-28.1rc2-aarch64-linux-gnu.tar.gz
+7cb0010a43f84d86693ca8f5079dc2381f6e63cab6805105f48d64b9c057ca6f  bitcoin-28.1rc2-arm-linux-gnueabihf-debug.tar.gz
+42de0a02b7b9ba05b06ce987d6989cad5a2d3b28a82b62299bd0750f4158202a  bitcoin-28.1rc2-arm-linux-gnueabihf.tar.gz
+89976f761fdd543075f026cc09dc13980e2532560ae1194874220b160b9dcbc2  bitcoin-28.1rc2-arm64-apple-darwin.zip
+88879d04961befa1f47a72cacd04c987385093a21d9519d2040ce9d507e9b344  bitcoin-28.1rc2-arm64-apple-darwin-unsigned.tar.gz
+3a0c5ce06077255231e00e0cca074b3c4003ffe8b817f5b6e14560c801756c71  bitcoin-28.1rc2-arm64-apple-darwin-unsigned.zip
+4516f7d5ca1b7cc557044f03811296ac4652934e1f63c0e9027378a12b628a52  bitcoin-28.1rc2-arm64-apple-darwin.tar.gz
+c9f9702df7df4dd62810bac0dd79989368f66316702200ab1bdfce1ce6bda701  bitcoin-28.1rc2-codesignatures-28.1rc2.tar.gz
+f98e3ad5e2d98b29775a4d440697fed7c216544c380f428e3f04b096e4da6232  bitcoin-28.1rc2.tar.gz
+435fa912da328d2217352bef415d3259a0da3b629113c79ac17e67cf8fde79be  bitcoin-28.1rc2-powerpc64-linux-gnu-debug.tar.gz
+ccbc266c79fb3f722313a57c196d56ac3732e50b0fc705d62e859a138f774f88  bitcoin-28.1rc2-powerpc64-linux-gnu.tar.gz
+0511ca05a941bfb536a6a245a38cb8e4c7e13039b1f7d52c0b5d4a05ffe3b27c  bitcoin-28.1rc2-riscv64-linux-gnu-debug.tar.gz
+9a53f93893875340810bf8443315b7ab89248affcb66d6bea0a09db61c69824e  bitcoin-28.1rc2-riscv64-linux-gnu.tar.gz
+4427f002fadb1e7be62f76f9124df83fc7b8da72a1ee72a94835eadfff2fbe89  bitcoin-28.1rc2-x86_64-apple-darwin.zip
+7da75219735b484f4c635962394bc0aa9039c38f7af43264c02f738bdfdac7a7  bitcoin-28.1rc2-x86_64-apple-darwin-unsigned.tar.gz
+efeb2aad6e6aa2cae7d235c116bc88b8f3c16683fae3862d14949d5168a0c2e4  bitcoin-28.1rc2-x86_64-apple-darwin-unsigned.zip
+f77e083fb4c442f248ef84d95f5a57b2f92b52d42668877c64dc4679cbb48499  bitcoin-28.1rc2-x86_64-apple-darwin.tar.gz
+0359ac449584e4db3604e362ad7b9e2cb518b1e2521edad0d4b6c28b27d35145  bitcoin-28.1rc2-x86_64-linux-gnu-debug.tar.gz
+ad94aa53a40e491e2818b9f449dfa4d60e0085e886fe52513b02e0dbbe39501e  bitcoin-28.1rc2-x86_64-linux-gnu.tar.gz
+0a3ec6bbc15b86558e5c8a5df8800df1a52929bd7446a75c185df72136817e03  bitcoin-28.1rc2-win64-setup.exe
+fa184c5d25522f9172ac4ffcc13562b70ac9b2e46c6d5751fe0129df49bedc11  bitcoin-28.1rc2-win64-debug.zip
+93f7082b4ef09e32623e6f0af14746fdd10a87909ad7e7b376ffe7bc81ae880f  bitcoin-28.1rc2-win64-setup-unsigned.exe
+63355dba9a3f31d8fa5baef598ab2879389d15f6b71e3e2112ff754ec2e65c83  bitcoin-28.1rc2-win64-unsigned.tar.gz
+c4f5441e034076dd60b08fe6309f33cb416fd988228492d4fced82f99db9e6bb  bitcoin-28.1rc2-win64.zip
diff --git a/28.1rc2/willcl-ark/all.SHA256SUMS.asc b/28.1rc2/willcl-ark/all.SHA256SUMS.asc
new file mode 100644
index 0000000000..74a04743bf
--- /dev/null
+++ b/28.1rc2/willcl-ark/all.SHA256SUMS.asc
@@ -0,0 +1,16 @@
+-----BEGIN PGP SIGNATURE-----
+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+=jdh1
+-----END PGP SIGNATURE-----