From d7b25b944bccc8c63a971975173f931e4857e2f1 Mon Sep 17 00:00:00 2001
From: "Chloe M." <chloe@mirocom.org>
Date: Thu, 30 Apr 2026 08:08:34 -0400
Subject: [PATCH] initial commit

Signed-off-by: Chloe M. <chloe@mirocom.org>
---
 .gitignore             |  3 +++
 Makefile               | 26 +++++++++++++++++++++++
 README                 |  4 ++++
 core/blobchain.c       | 47 ++++++++++++++++++++++++++++++++++++++++++
 inc/blobchain/common.h | 11 ++++++++++
 5 files changed, 91 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Makefile
 create mode 100644 README
 create mode 100644 core/blobchain.c
 create mode 100644 inc/blobchain/common.h

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..1daad9e
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+*.o
+*.d
+/blobchain
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..643dcf2
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,26 @@
+#
+# Copyright (c) 2026, Chloe M.
+# Provided under the BSD-3 clause
+#
+
+CFILES = $(shell find . -name "*.c")
+DFILES = $(CFILES:.c=.d)
+OFILES = $(CFILES:.c=.o)
+
+CC = gcc
+CFLAGS =		\
+	-Wall		\
+	-pedantic	\
+	-Iinc/		\
+	-MMD
+
+.PHONY: all
+all: blobchain
+
+.PHONY: blobchain
+blobchain: $(OFILES)
+	$(CC) $< -o $@
+
+-include $(DFILES)
+%.o: %.c
+	$(CC) -c $< $(CFLAGS) -o $@
diff --git a/README b/README
new file mode 100644
index 0000000..131018e
--- /dev/null
+++ b/README
@@ -0,0 +1,4 @@
+-- Blobchain --
+
+The blobchain format allows one to create a list of files and have a content-addressed snapshot of a directory
+in the form of a blockchain for verification purposes.
diff --git a/core/blobchain.c b/core/blobchain.c
new file mode 100644
index 0000000..c593b52
--- /dev/null
+++ b/core/blobchain.c
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2026, Chloe M.
+ * Provided under the BSD-3 clause
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include "blobchain/common.h"
+
+static void
+help(void)
+{
+    printf("usage: ./blobchain <flags>\n");
+    printf("... [-h] Display this help menu\n");
+    printf("... [-v] Display the version\n");
+}
+
+static void
+version(void)
+{
+    printf("Version v%s\n", BLOBCHAIN_VERSION);
+}
+
+int
+main(int argc, char **argv)
+{
+    int opt;
+
+    if (argc < 2) {
+        printf("fatal: too few arguments!\n");
+        help();
+        return -1;
+    }
+
+    while ((opt = getopt(argc, argv, "hv")) != -1) {
+        switch (opt) {
+        case 'h':
+            help();
+            return -1;
+        case 'v':
+            version();
+            return -1;
+        }
+    }
+
+    return 0;
+}
diff --git a/inc/blobchain/common.h b/inc/blobchain/common.h
new file mode 100644
index 0000000..25739e5
--- /dev/null
+++ b/inc/blobchain/common.h
@@ -0,0 +1,11 @@
+/*
+ * Copyright (c) 2026, Chloe M.
+ * Provided under the BSD-3 clause
+ */
+
+#ifndef BLOBCHAIN_COMMON_H
+#define BLOBCHAIN_COMMON_H 1
+
+#define BLOBCHAIN_VERSION "0.0.1"
+
+#endif  /* !BLOBCHAIN_COMMON_H */