diff --git a/services/blob/Cargo.lock b/services/blob/Cargo.lock
--- a/services/blob/Cargo.lock
+++ b/services/blob/Cargo.lock
@@ -11,6 +11,15 @@
  "memchr",
 ]
 
+[[package]]
+name = "android_system_properties"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "819e7219dbd41043ac279b19830f2efc897156490d7fd6ea916720117ee66311"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "anyhow"
 version = "1.0.66"
@@ -76,7 +85,7 @@
  "http",
  "hyper",
  "ring",
- "time",
+ "time 0.3.17",
  "tokio",
  "tower",
  "tracing",
@@ -240,7 +249,7 @@
  "percent-encoding",
  "regex",
  "ring",
- "time",
+ "time 0.3.17",
  "tracing",
 ]
 
@@ -377,7 +386,7 @@
  "itoa",
  "num-integer",
  "ryu",
- "time",
+ "time 0.3.17",
 ]
 
 [[package]]
@@ -471,6 +480,7 @@
  "aws-sdk-dynamodb",
  "aws-sdk-s3",
  "aws-types",
+ "chrono",
  "prost",
  "tokio",
  "tokio-stream",
@@ -521,6 +531,31 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "chrono"
+version = "0.4.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "16b0a3d9ed01224b22057780a37bb8c5dbfe1be8ba48678e7bf57ec4b385411f"
+dependencies = [
+ "iana-time-zone",
+ "js-sys",
+ "num-integer",
+ "num-traits",
+ "time 0.1.44",
+ "wasm-bindgen",
+ "winapi",
+]
+
+[[package]]
+name = "codespan-reporting"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3538270d33cc669650c4b093848450d380def10c331d38c768e34cac80576e6e"
+dependencies = [
+ "termcolor",
+ "unicode-width",
+]
+
 [[package]]
 name = "core-foundation"
 version = "0.9.3"
@@ -574,6 +609,50 @@
  "typenum",
 ]
 
+[[package]]
+name = "cxx"
+version = "1.0.82"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d4a41a86530d0fe7f5d9ea779916b7cadd2d4f9add748b99c2c029cbbdfaf453"
+dependencies = [
+ "cc",
+ "cxxbridge-flags",
+ "cxxbridge-macro",
+ "link-cplusplus",
+]
+
+[[package]]
+name = "cxx-build"
+version = "1.0.82"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "06416d667ff3e3ad2df1cd8cd8afae5da26cf9cec4d0825040f88b5ca659a2f0"
+dependencies = [
+ "cc",
+ "codespan-reporting",
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "scratch",
+ "syn",
+]
+
+[[package]]
+name = "cxxbridge-flags"
+version = "1.0.82"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "820a9a2af1669deeef27cb271f476ffd196a2c4b6731336011e0ba63e2c7cf71"
+
+[[package]]
+name = "cxxbridge-macro"
+version = "1.0.82"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a08a6e2fcc370a089ad3b4aaf54db3b1b4cee38ddabce5896b33eb693275f470"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "digest"
 version = "0.10.6"
@@ -690,7 +769,7 @@
 dependencies = [
  "cfg-if",
  "libc",
- "wasi",
+ "wasi 0.11.0+wasi-snapshot-preview1",
 ]
 
 [[package]]
@@ -830,6 +909,30 @@
  "tokio-io-timeout",
 ]
 
+[[package]]
+name = "iana-time-zone"
+version = "0.1.53"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "64c122667b287044802d6ce17ee2ddf13207ed924c712de9a66a5814d5b64765"
+dependencies = [
+ "android_system_properties",
+ "core-foundation-sys",
+ "iana-time-zone-haiku",
+ "js-sys",
+ "wasm-bindgen",
+ "winapi",
+]
+
+[[package]]
+name = "iana-time-zone-haiku"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0703ae284fc167426161c2e3f1da3ea71d94b21bedbcc9494e92b28e334e3dca"
+dependencies = [
+ "cxx",
+ "cxx-build",
+]
+
 [[package]]
 name = "indexmap"
 version = "1.9.1"
@@ -885,6 +988,15 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fc7fcc620a3bff7cdd7a365be3376c97191aeaccc2a603e600951e452615bf89"
 
+[[package]]
+name = "link-cplusplus"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9272ab7b96c9046fbc5bc56c06c117cb639fe2d509df0c421cad82d2915cf369"
+dependencies = [
+ "cc",
+]
+
 [[package]]
 name = "log"
 version = "0.4.17"
@@ -929,7 +1041,7 @@
 dependencies = [
  "libc",
  "log",
- "wasi",
+ "wasi 0.11.0+wasi-snapshot-preview1",
  "windows-sys 0.42.0",
 ]
 
@@ -1255,6 +1367,12 @@
  "windows-sys 0.36.1",
 ]
 
+[[package]]
+name = "scratch"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c8132065adcfd6e02db789d9285a0deb2f3fcb04002865ab67d5fb103533898"
+
 [[package]]
 name = "sct"
 version = "0.7.0"
@@ -1378,6 +1496,26 @@
  "winapi",
 ]
 
+[[package]]
+name = "termcolor"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bab24d30b911b2376f3a13cc2cd443142f0c81dda04c118693e35b3835757755"
+dependencies = [
+ "winapi-util",
+]
+
+[[package]]
+name = "time"
+version = "0.1.44"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6db9e6914ab8b1ae1c260a4ae7a49b6c5611b40328a735b21862567685e73255"
+dependencies = [
+ "libc",
+ "wasi 0.10.0+wasi-snapshot-preview1",
+ "winapi",
+]
+
 [[package]]
 name = "time"
 version = "0.3.17"
@@ -1636,6 +1774,12 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6ceab39d59e4c9499d4e5a8ee0e2735b891bb7308ac83dfb4e80cad195c9f6f3"
 
+[[package]]
+name = "unicode-width"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c0edd1e5b14653f783770bce4a4dabb4a5108a5370a5f5d8cfe8710c361f6c8b"
+
 [[package]]
 name = "untrusted"
 version = "0.7.1"
@@ -1664,6 +1808,12 @@
  "try-lock",
 ]
 
+[[package]]
+name = "wasi"
+version = "0.10.0+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a143597ca7c7793eff794def352d41792a93c481eb1042423ff7ff72ba2c31f"
+
 [[package]]
 name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"
@@ -1771,6 +1921,15 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 
+[[package]]
+name = "winapi-util"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
diff --git a/services/blob/Cargo.toml b/services/blob/Cargo.toml
--- a/services/blob/Cargo.toml
+++ b/services/blob/Cargo.toml
@@ -13,6 +13,7 @@
 aws-sdk-dynamodb = "0.21.0"
 aws-sdk-s3 = "0.21.0"
 aws-types = "0.51.0"
+chrono = "0.4"
 prost = "0.11"
 tokio = { version = "1.21", features = ["rt-multi-thread"]}
 tokio-stream = "0.1"
diff --git a/services/blob/src/database.rs b/services/blob/src/database.rs
--- a/services/blob/src/database.rs
+++ b/services/blob/src/database.rs
@@ -1,4 +1,5 @@
 use anyhow::Result;
+use chrono::{DateTime, Utc};
 use std::sync::Arc;
 
 use crate::s3::S3Path;
@@ -7,7 +8,7 @@
 pub struct BlobItem {
   pub blob_hash: String,
   pub s3_path: S3Path,
-  pub created: i64,
+  pub created: DateTime<Utc>,
 }
 
 #[derive(Clone, Debug)]