Pith Number

pith:7FKGUTMT

pith:2025:7FKGUTMTPJQZA6UJYDHICCPR57

not attested not anchored not stored refs pending

KeyDroid: A Large-Scale Analysis of Secure Key Storage in Android Apps

Alastair R. Beresford, Jenny Blessing, Ross J. Anderson

arxiv:2507.07927 v1 · 2025-07-10 · 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{7FKGUTMTPJQZA6UJYDHICCPR57}

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	2026-07-05T11:35:07.179538Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9546a4d937a61907a89c0ce8109f1efe561cf8d56b13a8aad6c21d638ffc7aa

Aliases

arxiv: 2507.07927 · arxiv_version: 2507.07927v1 · doi: 10.48550/arxiv.2507.07927 · pith_short_12: 7FKGUTMTPJQZ · pith_short_16: 7FKGUTMTPJQZA6UJ · pith_short_8: 7FKGUTMT

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/7FKGUTMTPJQZA6UJYDHICCPR57 \
  | 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: f9546a4d937a61907a89c0ce8109f1efe561cf8d56b13a8aad6c21d638ffc7aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb71296fdc550f1a55e2f208abcc992aabf61b9e6bbb3051e885eb8f74ea68eb",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2025-07-10T17:07:54Z",
    "title_canon_sha256": "0290323afa2afeabc9b29ff3981402362ca47e084e298ad6db293c4296029d73"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.07927",
    "kind": "arxiv",
    "version": 1
  }
}