diff --git a/README.md b/README.md
index 1472bf1..6315818 100644
--- a/README.md
+++ b/README.md
@@ -49,7 +49,7 @@ or start with stack followed by an integer
 `stack1`
 `a`
 
-Immediate values can be of 9 types:
+Immediate values can be of 11 types:
 
 1. Integers as decimals: {Digits} or -{Digits}
  `42`
@@ -57,8 +57,23 @@ Immediate values can be of 9 types:
   And integers as Hexadecimals::  0x{Hexdigits}
  `0x0deadbeef0`
 
-2. addresses, a base58 encoded string starting with # followed by a number of base58chars
- `#nv5B93FPzRHrGNmMdTDfGdd5xGZvep3MVSpJqzcQmMp59bBCv`
+2. Chain Objects. These are all addresses to different types of chain objects.
+   Each address is a 256 bits number encoded in base64 with a prefix.
+
+2a. Address: a base58 encoded number starting with @ followed by a number of base58chars
+ `@nv5B93FPzRHrGNmMdTDfGdd5xGZvep3MVSpJqzcQmMp59bBCv`
+
+2b. Contract address: ct_{base58char}+
+ `ct_nv5B93FPzRHrGNmMdTDfGdd5xGZvep3MVSpJqzcQmMp59bBCv`
+
+2c. Oracle addresse: ok_{base58char}+
+ `ok_nv5B93FPzRHrGNmMdTDfGdd5xGZvep3MVSpJqzcQmMp59bBCv`
+
+2d. Name addresse: nm_{base58char}+
+ `nm_nv5B93FPzRHrGNmMdTDfGdd5xGZvep3MVSpJqzcQmMp59bBCv`
+
+2e. Channel addresse: ch_{base58char}+
+ `ch_nv5B93FPzRHrGNmMdTDfGdd5xGZvep3MVSpJqzcQmMp59bBCv`
 
 3. Boolean  true or false
  `true`
@@ -88,6 +103,13 @@ Immediate values can be of 9 types:
 9. Variants: (| Size | Tag | ( Elements ) |)
  `(| 42 | 12 | ( "foo", 12) |)`
 
+10. Hashes: #{base64char}+
+ `#AQIDCioLFQ==`
+
+11. Signatures: ${base64char}+
+ `$AQIDCioLFQ==`
+
+
 Where
 
 Digits: [0123456789]
@@ -96,6 +118,8 @@ Hexdigits:  [0123456789abcdef]
 
 base58char:  [123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz]
 
+base64char:  [ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxy0123456789+/=]
+
 Characters: any printable ascii character 0..255 (except " no quoting yet)
 
 Key: any value except for a map
diff --git a/src/aeb_fate_asm.erl b/src/aeb_fate_asm.erl
index aed4029..dab824c 100644
--- a/src/aeb_fate_asm.erl
+++ b/src/aeb_fate_asm.erl
@@ -34,7 +34,7 @@
 %%%          stack1
 %%%          a
 %%%
-%%%      Immediate values can be of 9 types:
+%%%      Immediate values can be of 11 types:
 %%%      1a. Integers as decimals: {Digits} or -{Digits}
 %%%          42
 %%%          -2374683271468723648732648736498712634876147
@@ -42,7 +42,7 @@
 %%%          0x0deadbeef0
 %%%      2a. addresses, a base58 encoded string prefixed with @
 %%%          @foo
-%%%      2b. contract addresse: ct_{base58char}+
+%%%      2b. contract address: ct_{base58char}+
 %%%      2c. oracle addresse: ok_{base58char}+
 %%%      2d. name addresse: nm_{base58char}+
 %%%      2e. channel addresse: ch_{base58char}+
@@ -67,10 +67,15 @@
 %%%          (1, "foo")
 %%%       9. Variants: (| Size | Tag | ( Elements ) |)
 %%%          (| 42 | 12 | ( "foo", 12) |)
+%%%      10. Hashes: #{base64char}+
+%%%          #AQIDCioLFQ==
+%%%      11. Signatures: ${base64char}+
+%%%          $AQIDCioLFQ==
 %%%
 %%%       Where Digits: [0123456789]
 %%%             Hexdigits:  [0123456789abcdef]
 %%%             base58char:  [123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz]
+%%%             base64char:  [ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxy0123456789+/=]
 %%%             Characters any printable ascii character 0..255 (except " no quoting yet)
 %%%             Key: any value except for a map
 %%%             Bits: 01 or space