Pith Number

pith:MAMT7CTE

pith:2026:MAMT7CTEXRY3UISZ5LZHAIF7JR

not attested not anchored not stored refs pending

The missing links: Evaluating contact tracing with incomplete data in large metropolitan areas during an epidemic

Min-Kyung Chae, Sang Hoon Lee, Woo-Sik Son

arxiv:2601.14632 v2 · 2026-01-21 · physics.soc-ph · cond-mat.stat-mech · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MAMT7CTEXRY3UISZ5LZHAIF7JR}

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	2026-06-29T00:14:01.861200Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60193f8a64bc71ba2259eaf27020bf4c759f67348c34955b36f6c82d0026bfdc

Aliases

arxiv: 2601.14632 · arxiv_version: 2601.14632v2 · doi: 10.48550/arxiv.2601.14632 · pith_short_12: MAMT7CTEXRY3 · pith_short_16: MAMT7CTEXRY3UISZ · pith_short_8: MAMT7CTE

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/MAMT7CTEXRY3UISZ5LZHAIF7JR \
  | 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: 60193f8a64bc71ba2259eaf27020bf4c759f67348c34955b36f6c82d0026bfdc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1eb15aa474465d6d0aba7e92f7c8252cbaebb848da6a977fbc0bceddecb9943b",
    "cross_cats_sorted": [
      "cond-mat.stat-mech",
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2026-01-21T04:13:08Z",
    "title_canon_sha256": "13eaf89535c26b4f5bfc9bc320b05754d2cc77b3948915ca1c84152ff4009c3e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2601.14632",
    "kind": "arxiv",
    "version": 2
  }
}