Pith Number

pith:EVWFOKJP

pith:2021:EVWFOKJPFFBBGLGZUD2BIULBRL

not attested not anchored not stored refs pending

Sentiment Analysis and Topic Modeling for COVID-19 Vaccine Discussions

Hui Yin, Jianxin Li, Shuiqiao Yang, Xiangyu Song

arxiv:2111.04415 v1 · 2021-10-08 · cs.CY · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EVWFOKJPFFBBGLGZUD2BIULBRL}

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	2026-07-05T03:29:59.650247Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

256c57292f2942132cd9a0f41451618acd59b0d6a827da6e444a7fab35b930d6

Aliases

arxiv: 2111.04415 · arxiv_version: 2111.04415v1 · doi: 10.48550/arxiv.2111.04415 · pith_short_12: EVWFOKJPFFBB · pith_short_16: EVWFOKJPFFBBGLGZ · pith_short_8: EVWFOKJP

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/EVWFOKJPFFBBGLGZUD2BIULBRL \
  | 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: 256c57292f2942132cd9a0f41451618acd59b0d6a827da6e444a7fab35b930d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "acd13e43b440a572313415183b97c2e02cbf943dcceaa46e3fef8a2651f503f7",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2021-10-08T23:30:17Z",
    "title_canon_sha256": "38a12a53d03fa026755d7ed6708536c23e93fab6dfc665c572d41b21526d9816"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.04415",
    "kind": "arxiv",
    "version": 1
  }
}