Pith Number

pith:MTO5JVR6

pith:2019:MTO5JVR62AK7RGPDKAQWOGVRD2

not attested not anchored not stored refs pending

Correcting Sociodemographic Selection Biases for Population Prediction from Social Media

Farhan Ahmed, H. Andrew Schwartz, Keshav Gupta, Lyle Ungar, Salvatore Giorgi, Sandra Matz, Veronica Lynn

arxiv:1911.03855 v4 · 2019-11-10 · cs.SI · 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{MTO5JVR62AK7RGPDKAQWOGVRD2}

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	2026-07-05T04:29:22.549241Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

64ddd4d63ed015f899e35021671ab11e9d77004b977cb7191911c641d0063584

Aliases

arxiv: 1911.03855 · arxiv_version: 1911.03855v4 · doi: 10.48550/arxiv.1911.03855 · pith_short_12: MTO5JVR62AK7 · pith_short_16: MTO5JVR62AK7RGPD · pith_short_8: MTO5JVR6

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/MTO5JVR62AK7RGPDKAQWOGVRD2 \
  | 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: 64ddd4d63ed015f899e35021671ab11e9d77004b977cb7191911c641d0063584

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eaebeb9e1323dfeb437d0685ce82c2f9ad618cde4252db5038253038dd5f3ce9",
    "cross_cats_sorted": [
      "cs.CL",
      "cs.CY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2019-11-10T05:13:29Z",
    "title_canon_sha256": "88d3180d120f18a3619c3fb1c990cd982aa8980d578fb8b3bc377aea73d89250"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.03855",
    "kind": "arxiv",
    "version": 4
  }
}