Add min amount for each transaction output & remove rule BR_G106

rfc/0010_Duniter_Blockchain_Protocol_V12.md

@@ -437,7 +437,7 @@ A Transaction structure is considered *valid* if:
   * `IN_INDEX` must be an integer value
   * `UL_CONDITIONS` must be a valid [Input Condition](#input-condition)
 * Field `Outputs` is a multiline field whose lines follow `AMOUNT:BASE:CONDITIONS` format:
-  * `AMOUNT` must be an integer value
+  * `AMOUNT` must be an integer value. If `HEAD.version >= 12`, then `AMOUNT` must be greater than or equal to `100`.
   * `BASE` must be an integer value
   * `CONDITIONS` must be a valid [Output Condition](#output-condition)
 * Field `Comment` is a string of maximum 255 characters, exclusively composed of alphanumeric characters, space, `-`, `_`, `:`, `/`, `;`, `*`, `[`, `]`, `(`, `)`, `?`, `!`, `^`, `+`, `=`, `@`, `&`, `~`, `#`, `{`, `}`, `|`, `\`, `<`, `>`, `%`, `.`. Must be present even if empty.
@@ -461,9 +461,11 @@ It follows a machine-readable BNF grammar composed of
 
 * `(` and `)` characters
 * `&&` and `||` operators
-* `SIG(PUBLIC_KEY)`, `XHX(SHA256_HASH)`, `CLTV(INTEGER)`, `CSV(INTEGER)` functions
+* `SIG(PUBLIC_KEY)`, `XHX(SHA256_HASH)`, `CLTV(INTEGER)`, `CSV(INTEGER)`, `DESTROY()` functions
 * ` ` space
 
+**A condition that associates `DESTROY()` with other functions or operators is considered invalid.**
+
 **An empty condition or a condition fully composed of spaces is considered an invalid output condition**.
 
 Also, the maximum length of a condition is 1000 characters. // TODO:  OK?
@@ -475,6 +477,7 @@ Also, the maximum length of a condition is 1000 characters. // TODO:  OK?
 * `(SIG(HgTTJLAQ5sqfknMq7yLPZbehtuLSsKj9CxWN7k8QvYJd) && CSV(3600))`
 * `(SIG(HgTTJLAQ5sqfknMq7yLPZbehtuLSsKj9CxWN7k8QvYJd) && (CLTV(1489677041) || CSV(3600)))`
 * `(SIG(HgTTJLAQ5sqfknMq7yLPZbehtuLSsKj9CxWN7k8QvYJd) || (SIG(DNann1Lh55eZMEDXeYt59bzHbA3NJR46DeQYCS2qQdLV) && XHX(309BC5E644F797F53E5A2065EAF38A173437F2E6)))`
+* `DESTROY()`
 
 #### Condition matching
 
@@ -828,6 +831,24 @@ Then the `25` units can be spent *exclusively* in a block whose `MedianTime - Tx
 
 `CSV`'s parameter must be an integer with a length between `1` and `8` chars.
 
+##### DESTROY function
+
+###### Definition
+
+Lock:
+
+    DESTROY()
+
+Unlock: no unlocking function.
+
+###### Condition
+
+`DESTROY()` always return false.
+
+###### Description
+
+This fonction lock an output for all eternity. This makes it possible to destroy money.
+
 #### Compact format
 
 A transaction may be described with a more compact format, to be used in a [Block](#block) document. The general format is:
@@ -1254,6 +1275,7 @@ A block cannot contain revocations whose signature does not match the revocation
 * A transaction cannot have `SIG(INDEX)` unlocks with `INDEX >= ` issuers count.
 * A transaction **must** have signatures matching its content **for each issuer**
 * Transaction's version must be equal to `10`.
+* If `HEAD.version >= 12`, then `AMOUNT` of each output must be greater than or equal to `100`.
 * Signatures count must be the same as issuers count
 * Signatures are ordered by issuer
 * Signatures are made over the transaction's content, signatures excepted
@@ -1419,7 +1441,7 @@ Each transaction input produces 1 new entry:
         consumed = true
     )
 
-Each transaction output produces 1 new entry:
+Each transaction output for which `OUTPUT_CONDITIONS != DESTROY()` produces 1 new entry:
 
     SINDEX (
         op = 'CREATE'
@@ -2724,30 +2746,6 @@ For each `LOCAL_IINDEX[member=true] as IDTY` add a new LOCAL_SINDEX entry:
         consumed = false
     )
 
-###### BR_G106 - Low accounts
-
-Set:
-
-    ACCOUNTS = UNIQ(GLOBAL_SINDEX, 'conditions')
-
-For each `ACCOUNTS as ACCOUNT` then:
-
-Set:
-
-    ALL_SOURCES = CONCAT(GLOBAL_SINDEX[conditions=ACCOUNT.conditions], LOCAL_SINDEX[conditions=ACCOUNT.conditions])
-    SOURCES = REDUCE_BY(ALL_SOURCES, 'identifier', 'pos')[consumed=false]
-    BALANCE = SUM(MAP(SOURCES => SRC: SRC.amount * POW(10, SRC.base)))
-
-If `BALANCE < 100 * POW(10, HEAD.unitBase)`, then for each `SOURCES AS SRC` add a new LOCAL_SINDEX entry:
-
-    SINDEX (
-        op = 'UPDATE'
-        identifier = SRC.identifier
-        pos = SRC.pos
-        written_on = BLOCKSTAMP
-        written_time = MedianTime
-        consumed = true
-    )
 
 ###### BR_G92 - Certification expiry