diff --git a/argon2/README.md b/argon2/README.md
new file mode 100644
index 0000000..ac204a7
--- /dev/null
+++ b/argon2/README.md
@@ -0,0 +1,3 @@
+## Status
+
+Source: https://github.com/golang/crypto/tree/bda2f3f5cfce3f27039acccd823693f6d67c2a74/argon2
diff --git a/bcrypt/README.md b/bcrypt/README.md
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index 0000000..84374c3
--- /dev/null
+++ b/bcrypt/README.md
@@ -0,0 +1,3 @@
+## Status
+
+Source: https://github.com/golang/crypto/tree/bc7d1d1eb54b3530da4f5ec31625c95d7df40231/bcrypt
diff --git a/blake2b/README.md b/blake2b/README.md
new file mode 100644
index 0000000..d38dd4c
--- /dev/null
+++ b/blake2b/README.md
@@ -0,0 +1,3 @@
+## Status
+
+Source: https://github.com/golang/crypto/tree/b8ffc16e10063067bac0e15c6d7f7995937503ce/blake2b
diff --git a/blowfish/README.md b/blowfish/README.md
new file mode 100644
index 0000000..b0d7173
--- /dev/null
+++ b/blowfish/README.md
@@ -0,0 +1,3 @@
+## Status
+
+Source: https://github.com/golang/crypto/tree/a57398324d7b9ce8afc47fed8168be52977536f1/blowfish
diff --git a/pbkdf2/README.md b/pbkdf2/README.md
new file mode 100644
index 0000000..30443db
--- /dev/null
+++ b/pbkdf2/README.md
@@ -0,0 +1,4 @@
+## Status
+
+Source: https://github.com/golang/crypto/tree/7b82a4e95df4499652dca2c0d4185de9fffbdc8f/pbkdf2
+
diff --git a/scrypt/README.md b/scrypt/README.md
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index 0000000..4f24697
--- /dev/null
+++ b/scrypt/README.md
@@ -0,0 +1,5 @@
+## Status
+
+Source: https://github.com/golang/crypto/tree/7b82a4e95df4499652dca2c0d4185de9fffbdc8f/scrypt
+
+https://github.com/golang/crypto/tree/master/scrypt