Pith Number

pith:CTRNNZKI

pith:2014:CTRNNZKIX7YUI77Z25ID6EWZEE

not attested not anchored not stored refs pending

Finding Eyewitness Tweets During Crises

Fred Morstatter, Heather Pon-Barry, Huan Liu, J\"urgen Pfeffer, Nichola Lubold

arxiv:1403.1773 v1 · 2014-03-07 · cs.CL · 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{CTRNNZKIX7YUI77Z25ID6EWZEE}

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	2026-07-05T04:11:21.780919Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

14e2d6e548bff1447ff9d7503f12d921025c0995388bd97c0256bfc81e28cae7

Aliases

arxiv: 1403.1773 · arxiv_version: 1403.1773v1 · doi: 10.48550/arxiv.1403.1773 · pith_short_12: CTRNNZKIX7YU · pith_short_16: CTRNNZKIX7YUI77Z · pith_short_8: CTRNNZKI

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/CTRNNZKIX7YUI77Z25ID6EWZEE \
  | 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: 14e2d6e548bff1447ff9d7503f12d921025c0995388bd97c0256bfc81e28cae7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed30987c3d2d67a4aed6d72f967d3a42e41c453cd90a10a00027d3991a3b0902",
    "cross_cats_sorted": [
      "cs.CY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2014-03-07T15:13:13Z",
    "title_canon_sha256": "cac290b20ffb5ef7aa2cfd07f95c6d5c744033fade86f8b75c644be0d2a8595a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.1773",
    "kind": "arxiv",
    "version": 1
  }
}