Pith Number

pith:7MDLDOVJ

pith:2019:7MDLDOVJUYA3KBAT5QLTXFL7U5

not attested not anchored not stored refs pending

Shining a light on Spotlight: Leveraging Apple's desktop search utility to recover deleted file metadata on macOS

Mark Scanlon, Nhien-An Le-Khac, Tajvinder Singh Atwal

arxiv:1903.07053 v1 · 2019-03-17 · cs.CR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7MDLDOVJUYA3KBAT5QLTXFL7U5}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-17T23:51:04.413219Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb06b1baa9a601b50413ec173b957fa740b988aac6e802d82a591a83507ef59d

Aliases

arxiv: 1903.07053 · arxiv_version: 1903.07053v1 · doi: 10.48550/arxiv.1903.07053 · pith_short_12: 7MDLDOVJUYA3 · pith_short_16: 7MDLDOVJUYA3KBAT · pith_short_8: 7MDLDOVJ

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/7MDLDOVJUYA3KBAT5QLTXFL7U5 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: fb06b1baa9a601b50413ec173b957fa740b988aac6e802d82a591a83507ef59d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bea8e96030e51e3bb23fbfa48bc8654b3854ead1177869d9cdae4da1a4521ffd",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2019-03-17T10:01:08Z",
    "title_canon_sha256": "dde631c7901fc4b7689c887f63a60822d3e6ed861464a40c5e413eb084e197ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.07053",
    "kind": "arxiv",
    "version": 1
  }
}