Pith Number

pith:Y4ISYE4N

pith:2021:Y4ISYE4NZQJNLQZ4WSADFZYPTU

not attested not anchored not stored refs pending

Social Media for Emergency Rescue: An Analysis of Rescue Requests on Twitter during Hurricane Harvey

Bing Zhou, Danqing Liao, Dongying Li, Heng Cai, Lei Zou, Michelle Meyer, Nasir G. Gharaibeh, Nina S.N. Lam

arxiv:2111.07187 v1 · 2021-11-13 · cs.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y4ISYE4NZQJNLQZ4WSADFZYPTU}

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	2026-07-05T03:31:37.150511Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c7112c138dcc12d5c33cb48032e70f9d22a23557347a0ab487c27ce7896b0e17

Aliases

arxiv: 2111.07187 · arxiv_version: 2111.07187v1 · doi: 10.48550/arxiv.2111.07187 · pith_short_12: Y4ISYE4NZQJN · pith_short_16: Y4ISYE4NZQJNLQZ4 · pith_short_8: Y4ISYE4N

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/Y4ISYE4NZQJNLQZ4WSADFZYPTU \
  | 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: c7112c138dcc12d5c33cb48032e70f9d22a23557347a0ab487c27ce7896b0e17

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad32ddd47df8a89d638e6ede9302842ae5db38de90b5143c17c3d3179466270c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2021-11-13T20:32:39Z",
    "title_canon_sha256": "5bf21e0b68c026dc476c421810c952b0f992c6a9ac8f42f961a0034e811893fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.07187",
    "kind": "arxiv",
    "version": 1
  }
}