Add bytes(int), add address_literalsm add ecverify_secp25k1

hash -> bytes(32)
signature -> bytes(64)
address literals

test/contracts/address_literals.aes

@@ -0,0 +1,14 @@
+
+contract Remote =
+  function foo : () => ()
+
+contract AddressLiterals =
+  function addr() : address =
+    ak_2gx9MEFxKvY9vMG5YnqnXWv1hCsX7rgnfvBLJS4aQurustR1rt
+  function oracle() : oracle(int, bool) =
+    ok_2YNyxd6TRJPNrTcEDCe9ra59SVUdp9FR9qWC5msKZWYD9bP9z5
+  function query() : oracle_query(int, bool) =
+    oq_2oRvyowJuJnEkxy58Ckkw77XfWJrmRgmGaLzhdqb67SKEL1gPY
+  function contr() : Remote =
+    ct_Ez6MyeTMm17YnTnDdHTSrzMEBKmy7Uz2sXu347bTDPgVH2ifJ
+

test/contracts/bad_address_literals.aes

@@ -0,0 +1,33 @@
+
+contract Remote =
+  function foo : () => ()
+
+contract AddressLiterals =
+  function addr1() : bytes(32) =
+    ak_2gx9MEFxKvY9vMG5YnqnXWv1hCsX7rgnfvBLJS4aQurustR1rt
+  function addr2() : Remote =
+    ak_2gx9MEFxKvY9vMG5YnqnXWv1hCsX7rgnfvBLJS4aQurustR1rt
+  function addr3() : oracle(int, bool) =
+    ak_2gx9MEFxKvY9vMG5YnqnXWv1hCsX7rgnfvBLJS4aQurustR1rt
+
+  function oracle1() : oracle_query(int, bool) =
+    ok_2YNyxd6TRJPNrTcEDCe9ra59SVUdp9FR9qWC5msKZWYD9bP9z5
+  function oracle2() : bytes(32) =
+    ok_2YNyxd6TRJPNrTcEDCe9ra59SVUdp9FR9qWC5msKZWYD9bP9z5
+  function oracle3() : Remote =
+    ok_2YNyxd6TRJPNrTcEDCe9ra59SVUdp9FR9qWC5msKZWYD9bP9z5
+
+  function query1() : oracle(int, bool) =
+    oq_2oRvyowJuJnEkxy58Ckkw77XfWJrmRgmGaLzhdqb67SKEL1gPY
+  function query2() : bytes(32) =
+    oq_2oRvyowJuJnEkxy58Ckkw77XfWJrmRgmGaLzhdqb67SKEL1gPY
+  function query3() : Remote =
+    oq_2oRvyowJuJnEkxy58Ckkw77XfWJrmRgmGaLzhdqb67SKEL1gPY
+
+  function contr1() : address =
+    ct_Ez6MyeTMm17YnTnDdHTSrzMEBKmy7Uz2sXu347bTDPgVH2ifJ
+  function contr2() : oracle(int, bool) =
+    ct_Ez6MyeTMm17YnTnDdHTSrzMEBKmy7Uz2sXu347bTDPgVH2ifJ
+  function contr3() : bytes(32) =
+    ct_Ez6MyeTMm17YnTnDdHTSrzMEBKmy7Uz2sXu347bTDPgVH2ifJ
+

test/contracts/bitcoin_auth.aes

@@ -0,0 +1,18 @@
+contract BitcoinAuth =
+  record state = { nonce : int, owner : bytes(64) }
+
+  function init(owner' : bytes(64)) = { nonce = 1, owner = owner' }
+
+  function authorize(n : int, s : signature) : bool =
+    require(n >= state.nonce, "Nonce too low")
+    require(n =< state.nonce, "Nonce too high")
+    put(state{ nonce = n + 1 })
+    switch(Auth.tx_hash)
+      None          => abort("Not in Auth context")
+      Some(tx_hash) => Crypto.ecverify_secp256k1(to_sign(tx_hash, n), state.owner, s)
+
+  function to_sign(h : hash, n : int) : hash =
+    Crypto.blake2b((h, n))
+
+  private function require(b : bool, err : string) =
+    if(!b) abort(err)

test/contracts/fundme.aes

@@ -53,7 +53,7 @@ contract FundMe =
     require(state.total >= state.goal, "Project was not funded")
     spend({recipient = state.beneficiary,
            amount    = Contract.balance })
-    put(state{ beneficiary = #0 })
+    put(state{ beneficiary = ak_11111111111111111111111111111111273Yts })
 
   private stateful function withdraw_contributor() =
     if(state.total >= state.goal)