Pith Number

pith:5CTZIA3M

pith:2014:5CTZIA3MZCVE7MIL4DG7LUNCBL

not attested not anchored not stored refs pending

Multi-scale Population and Mobility Estimation with Geo-tagged Tweets

Jiajun Liu, Kun Zhao, Mark Cameron, Raja Jurdak, Saeed Khan

arxiv:1412.0327 v1 · 2014-12-01 · cs.SI · cs.CY · physics.soc-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5CTZIA3MZCVE7MIL4DG7LUNCBL}

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	2026-05-18T02:32:28.072235Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e8a794036cc8aa4fb10be0cdf5d1a20afc1f6607431752057d720b37fb5d6bb1

Aliases

arxiv: 1412.0327 · arxiv_version: 1412.0327v1 · doi: 10.48550/arxiv.1412.0327 · pith_short_12: 5CTZIA3MZCVE · pith_short_16: 5CTZIA3MZCVE7MIL · pith_short_8: 5CTZIA3M

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/5CTZIA3MZCVE7MIL4DG7LUNCBL \
  | 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: e8a794036cc8aa4fb10be0cdf5d1a20afc1f6607431752057d720b37fb5d6bb1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c9b319739b56716aaabd49f1605b42a4c82c45e2adc7b6c17b4898992ce34dd",
    "cross_cats_sorted": [
      "cs.CY",
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2014-12-01T01:48:53Z",
    "title_canon_sha256": "bcd0390243eb8444c7efa3cb3741d9d8c9a8952678d12620720a7ee34f070b6f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.0327",
    "kind": "arxiv",
    "version": 1
  }
}