diff --git a/package-lock.json b/package-lock.json
index 470f704..0c885d6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,17 +1,18 @@
 {
   "name": "banani",
-  "version": "1.0.0",
+  "version": "1.0.4",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "banani",
-      "version": "1.0.0",
+      "version": "1.0.4",
       "license": "MIT",
       "dependencies": {
         "blake2b": "^2.1.4"
       },
       "devDependencies": {
+        "@types/blake2b": "^2.1.3",
         "esbuild": "^0.21.4",
         "prettier": "3.3.2",
         "typedoc": "^0.25.13",
@@ -386,6 +387,13 @@
         "node": ">=12"
       }
     },
+    "node_modules/@types/blake2b": {
+      "version": "2.1.3",
+      "resolved": "https://registry.npmjs.org/@types/blake2b/-/blake2b-2.1.3.tgz",
+      "integrity": "sha512-MFCdX0MNxFBP/xEILO5Td0kv6nI7+Q2iRWZbTL/yzH2/eDVZS5Wd1LHdsmXClvsCyzqaZfHFzZaN6BUeUCfSDA==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/ansi-sequence-parser": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/ansi-sequence-parser/-/ansi-sequence-parser-1.1.1.tgz",
diff --git a/package.json b/package.json
index 80aac99..41c5154 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "banani",
-  "version": "1.0.4",
+  "version": "1.0.5",
   "description": "JS/TS library for the Banano cryptocurrency in the style of bananopie",
   "main": "main.js",
   "scripts": {
@@ -27,6 +27,7 @@
   },
   "homepage": "https://github.com/stjet/banani#readme",
   "devDependencies": {
+    "@types/blake2b": "^2.1.3",
     "esbuild": "^0.21.4",
     "prettier": "3.3.2",
     "typedoc": "^0.25.13",
diff --git a/rpc.ts b/rpc.ts
index 3abb2e6..7f3ecc7 100644
--- a/rpc.ts
+++ b/rpc.ts
@@ -212,7 +212,8 @@ export class RPCWithBackup extends RPC {
         return resp_json;
       } catch (e) {
         //increment (so try next RPC in provided list), if all RPCs exhausted (all failed), throw error
-        if (!this.rpc_urls[++i]) throw Error(e);
+        //typescript says e might not inherit from Error which is technically true, but in this case it always will be
+        if (!this.rpc_urls[++i]) throw Error(e instanceof Error ? e.toString() : "RPC call error");
       }
     }
   }
diff --git a/tsconfig.json b/tsconfig.json
index 2c0ab3c..b0ab561 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -6,7 +6,9 @@
     "typeRoots": ["./node_modules/@types"],
     "esModuleInterop": true,
     "skipLibCheck": true,
-    "forceConsistentCasingInFileNames": true
+    "forceConsistentCasingInFileNames": true,
+    "strict": true,
+    "noUnusedLocals": true
   },
   "lib": ["ES2020"],
   "exclude": ["node_modules", ".build", "browser-main.ts"]
diff --git a/util.ts b/util.ts
index d4b2250..32eea56 100644
--- a/util.ts
+++ b/util.ts
@@ -1,3 +1,4 @@
+// @ts-ignore
 import * as nacl from "./tweetnacl_mod";
 import blake2b from "blake2b";
 import type { AddressPrefix, Address, BlockNoSignature, BlockHash } from "./rpc_types";
@@ -122,7 +123,7 @@ export function utf8_to_uint8array(utf8: string): Uint8Array {
 
 const BANANO_DECIMALS: number = 29;
 /** Do `rpc.DECIMALS = banani.NANO_DECIMALS` if using Nano. Putting the wrong amount of decimals in may result in LOSS OF FUNDS. */
-const NANO_DECIMALS: number = 30;
+export const NANO_DECIMALS: number = 30;
 
 /** Does NOT mean whole number, can be decimal like "4.2001". Use instead of regular number since those lose precision when decimal */
 export type Whole = `${number}`; //number can include non-base-10 formats... but whatever, we can assume users will pass in only base-10 because they are normal for the most part
@@ -175,7 +176,7 @@ export function get_address_from_public_key(public_key: string, prefix: AddressP
   //the previously mentioned padding the front with 4 bits
   const encoded = uint8array_to_base32(hex_to_uint8array(`0${public_key}`));
   //skip byte length assertions
-  const hashed = uint8array_to_base32(blake2b(5, null, null, null, true).update(hex_to_uint8array(public_key)).digest().reverse());
+  const hashed = uint8array_to_base32(blake2b(5, undefined, undefined, undefined, true).update(hex_to_uint8array(public_key)).digest().reverse());
   return `ban_${encoded}${hashed}` as Address; //fix for old versions of typescript or something
 }
 
diff --git a/wallet.ts b/wallet.ts
index 2902833..69f8b16 100644
--- a/wallet.ts
+++ b/wallet.ts
@@ -1,6 +1,6 @@
 import * as util from "./util";
 import type { AccountInfoRPC, AccountReceivableRPC, AccountReceivableThresholdRPC, AccountReceivableSourceRPC, Address, Block, BlockNoSignature, BlockSubtype, BlockHash } from "./rpc_types";
-import type { RPCInterface, RPC } from "./rpc";
+import type { RPCInterface } from "./rpc";
 
 export type WorkFunction = (block_hash: BlockHash) => Promise<string>;
 
@@ -68,7 +68,10 @@ export class Wallet {
     const raw_send = util.whole_to_raw(amount, this.rpc.DECIMALS);
     const info = cached_account_info ?? (await this.get_account_info(undefined, true)); //this should be lazy. the true makes sure representative is included
     const pub_receive = util.get_public_key_from_address(to);
-    if (!representative) representative = info.representative;
+    if (representative === undefined) {
+      if (info.representative === undefined) throw Error("Missing field 'representative' in `cached_account_info`");
+      representative = info.representative;
+    }
     const before_balance = BigInt(info.balance);
     const new_balance = before_balance - raw_send;
     if (new_balance < 0n) {
@@ -86,7 +89,7 @@ export class Wallet {
     };
     const s_block_hash = util.hash_block(block_ns); //block hash of the send block
     let work = undefined;
-    if (gen_work) work = await this.work_function(s_block_hash);
+    if (gen_work && this.work_function) work = await this.work_function(s_block_hash);
     const signature = util.sign_block_hash(this.private_key, s_block_hash);
     const block = { ...block_ns, signature, work };
     return await this.send_process(block, "send");
@@ -106,12 +109,11 @@ export class Wallet {
     //doesn't matter if open or not, I think?
     const block_info = await this.rpc.get_block_info(block_hash);
     let before_balance = 0n;
-    if (!representative) representative = this.address;
     let previous;
     try {
       const info = await this.get_account_info(undefined, true);
       previous = info.frontier;
-      representative = info.representative;
+      if (!representative) representative = info.representative;
       before_balance = BigInt(info.balance);
     } catch (e) {
       //todo, check if error message is "Account not found"
@@ -119,18 +121,19 @@ export class Wallet {
       //unopened account probably
       previous = "0".repeat(64);
     }
+    if (representative === undefined) representative = this.address;
     const block_ns: BlockNoSignature = {
       type: "state",
       account: this.address,
       previous,
       representative,
-      balance: (before_balance + BigInt(block_info.amount)).toString() as `${number}`,
+      balance: ((before_balance + BigInt(block_info.amount)).toString() as `${number}`),
       //link is hash of send block
       link: block_hash,
     };
     const r_block_hash = util.hash_block(block_ns); //block hash of the receive block
     let work = undefined;
-    if (gen_work) work = await this.work_function(r_block_hash);
+    if (gen_work && this.work_function) work = await this.work_function(r_block_hash);
     const signature = util.sign_block_hash(this.private_key, r_block_hash);
     const block = { ...block_ns, signature, work };
     return await this.send_process(block, "receive");
@@ -156,9 +159,9 @@ export class Wallet {
       //console.log(e)
       //unopened account probably
       previous = "0".repeat(64);
-      representative = this.address;
       before_balance = BigInt(0);
     }
+    if (representative === undefined) representative = this.address;
     let receive_block_hashes: BlockHash[] = [];
     for (const receive_hash of Object.keys(to_receive)) {
       const new_balance = (before_balance + BigInt(to_receive[receive_hash].amount)).toString() as `${number}`;
@@ -173,7 +176,7 @@ export class Wallet {
       };
       const r_block_hash = util.hash_block(block_ns); //block hash of the receive block
       let work = undefined;
-      if (gen_work) work = await this.work_function(r_block_hash);
+      if (gen_work && this.work_function) work = await this.work_function(r_block_hash);
       const signature = util.sign_block_hash(this.private_key, r_block_hash);
       const block = { ...block_ns, signature, work };
       await this.send_process(block, "receive");
@@ -200,7 +203,7 @@ export class Wallet {
     };
     const c_block_hash = util.hash_block(block_ns); //block hash of the change block
     let work = undefined;
-    if (gen_work) work = await this.work_function(c_block_hash);
+    if (gen_work && this.work_function) work = await this.work_function(c_block_hash);
     const signature = util.sign_block_hash(this.private_key, c_block_hash);
     const block = { ...block_ns, signature, work };
     return await this.send_process(block, "change");