Pith Number

pith:Q2QQQW4L

pith:2017:Q2QQQW4LRYGMSKYPS7NTUN2RYS

not attested not anchored not stored refs pending

IllusionPIN: Shoulder-Surfing Resistant Authentication Using Hybrid Images

Athanasios Papadopoulos, Emre Durmus, Nasir Memon, Toan Nguyen

arxiv:1708.06508 v1 · 2017-08-22 · 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{Q2QQQW4LRYGMSKYPS7NTUN2RYS}

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	2026-05-18T00:37:39.280266Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86a1085b8b8e0cc92b0f97db3a3751c482553c9f7cc4cc187b850f22b8491578

Aliases

arxiv: 1708.06508 · arxiv_version: 1708.06508v1 · doi: 10.48550/arxiv.1708.06508 · pith_short_12: Q2QQQW4LRYGM · pith_short_16: Q2QQQW4LRYGMSKYP · pith_short_8: Q2QQQW4L

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/Q2QQQW4LRYGMSKYPS7NTUN2RYS \
  | 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: 86a1085b8b8e0cc92b0f97db3a3751c482553c9f7cc4cc187b850f22b8491578

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "db5e8f1788842e97f9137e9a9c59819b89519e04000c3fe7ac3b4f2b67c8b3e6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2017-08-22T06:28:22Z",
    "title_canon_sha256": "dccfaa91dbd01ca099b717a29ab622ca3d1d8bdbf497128047322e42b35b7e47"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.06508",
    "kind": "arxiv",
    "version": 1
  }
}