diff --git a/db/init.sql b/db/init.sql
index 09a777f..fe05bb0 100644
--- a/db/init.sql
+++ b/db/init.sql
@@ -1,23 +1,27 @@
-CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
-
-CREATE TABLE lnauth(
-    k1 VARCHAR(64) NOT NULL PRIMARY KEY,
-    lnurl TEXT NOT NULL,
-    created TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    session_id VARCHAR(48) NOT NULL DEFAULT encode(gen_random_uuid()::text::bytea, 'base64')
-);
 CREATE TABLE users(
-    pubkey TEXT PRIMARY KEY,
-    last_seen TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    id SERIAL PRIMARY KEY,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    ln_pubkey TEXT,
+    nostr_pubkey TEXT,
     msats BIGINT NOT NULL DEFAULT 0
 );
+
 CREATE TABLE sessions(
-    pubkey TEXT NOT NULL REFERENCES users(pubkey),
+    user_id INTEGER NOT NULL REFERENCES users(id),
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
     session_id VARCHAR(48)
 );
+
+CREATE TABLE lnauth(
+    k1 VARCHAR(64) PRIMARY KEY,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    lnurl TEXT NOT NULL,
+    session_id VARCHAR(48) NOT NULL DEFAULT encode(gen_random_uuid()::text::bytea, 'base64')
+);
+
 CREATE TABLE invoices(
-    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
-    pubkey TEXT NOT NULL REFERENCES users(pubkey),
+    id SERIAL PRIMARY KEY,
+    user_id INTEGER NOT NULL REFERENCES users(id),
     msats BIGINT NOT NULL,
     msats_received BIGINT,
     preimage TEXT NOT NULL UNIQUE,
@@ -29,40 +33,47 @@ CREATE TABLE invoices(
     held_since TIMESTAMP WITH TIME ZONE,
     description TEXT
 );
+
 CREATE TABLE markets(
     id SERIAL PRIMARY KEY,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
     description TEXT NOT NULL,
     end_date TIMESTAMP WITH TIME ZONE NOT NULL,
     settled_at TIMESTAMP WITH TIME ZONE,
-    pubkey TEXT NOT NULL REFERENCES users(pubkey),
-    invoice_id UUID NOT NULL UNIQUE REFERENCES invoices(id)
+    user_id INTEGER NOT NULL REFERENCES users(id),
+    invoice_id INTEGER NOT NULL UNIQUE REFERENCES invoices(id)
 );
+
 CREATE TABLE shares(
-    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    id SERIAL PRIMARY KEY,
     market_id INTEGER NOT NULL REFERENCES markets(id),
-    win BOOLEAN,
-    description TEXT NOT NULL
+    description TEXT NOT NULL,
+    win BOOLEAN
 );
+
 CREATE TYPE order_side AS ENUM ('BUY', 'SELL');
+
 CREATE TABLE orders(
-    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    id SERIAL PRIMARY KEY,
     created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
     deleted_at TIMESTAMP WITH TIME ZONE,
-    share_id UUID NOT NULL REFERENCES shares(id),
-    pubkey TEXT NOT NULL REFERENCES users(pubkey),
+    share_id INTEGER NOT NULL REFERENCES shares(id),
+    user_id INTEGER NOT NULL REFERENCES users(id),
     side ORDER_SIDE NOT NULL,
     quantity BIGINT NOT NULL,
     price BIGINT NOT NULL,
-    invoice_id UUID REFERENCES invoices(id),
-    order_id UUID REFERENCES orders(id)
+    invoice_id INTEGER REFERENCES invoices(id),
+    order_id INTEGER REFERENCES orders(id)
 );
+
 ALTER TABLE orders ADD CONSTRAINT order_price CHECK(price > 0 AND price < 100);
 ALTER TABLE orders ADD CONSTRAINT order_quantity CHECK(quantity > 0);
+
 CREATE TABLE withdrawals(
-    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    id SERIAL PRIMARY KEY,
     created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    deleted_at TIMESTAMP WITH TIME ZONE,
-    pubkey TEXT NOT NULL REFERENCES users(pubkey),
+    canceled_at TIMESTAMP WITH TIME ZONE,
+    user_id INTEGER NOT NULL REFERENCES users(id),
     bolt11 TEXT NOT NULL UNIQUE,
     paid_at TIMESTAMP WITH TIME ZONE
 );