Pith Number

pith:GWTYCRE2

pith:2021:GWTYCRE2HP3O5IVOZO5V6IMQBG

not attested not anchored not stored refs pending

Pulse of the Pandemic: Iterative Topic Filtering for Clinical Information Extraction from Social Media

David Sontag, Dheekshita Kumar, Juan M. Banda, Julia Wu, Venkatesh Sivaraman

arxiv:2102.06836 v2 · 2021-02-13 · cs.SI · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GWTYCRE2HP3O5IVOZO5V6IMQBG}

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	2026-07-05T02:52:41.961486Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

35a781449a3bf6eea2aecbbb5f219009ba5b9d78a9c75c36ea106edb904185c7

Aliases

arxiv: 2102.06836 · arxiv_version: 2102.06836v2 · doi: 10.48550/arxiv.2102.06836 · pith_short_12: GWTYCRE2HP3O · pith_short_16: GWTYCRE2HP3O5IVO · pith_short_8: GWTYCRE2

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/GWTYCRE2HP3O5IVOZO5V6IMQBG \
  | 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: 35a781449a3bf6eea2aecbbb5f219009ba5b9d78a9c75c36ea106edb904185c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "767c16168ffbd4af9ef2b7e3ca630a65de5bd9d16d2297585e9e5d0d04f150d0",
    "cross_cats_sorted": [
      "cs.CY"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2021-02-13T01:01:04Z",
    "title_canon_sha256": "da1a95c7b134f9a7a0bb97d07b7524a9d32c7de9ad64dbe88b3084b7faf47eb6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.06836",
    "kind": "arxiv",
    "version": 2
  }
}