Pith Number

pith:X7NJH7NP

pith:2018:X7NJH7NPHUJN7WRMM6MWXUW6IH

not attested not anchored not stored refs pending

The hidden traits of endemic illiteracy in cities

Haroldo V. Ribeiro, Jose S. Andrade Jr., Luiz G. A. Alves, Quentin S. Hanley

arxiv:1809.10302 v1 · 2018-09-27 · physics.soc-ph · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{X7NJH7NPHUJN7WRMM6MWXUW6IH}

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	2026-05-17T23:54:02.551257Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bfda93fdaf3d12dfda2c67996bd2de41d55e736b40ce1f30a1691879e75b9785

Aliases

arxiv: 1809.10302 · arxiv_version: 1809.10302v1 · doi: 10.48550/arxiv.1809.10302 · pith_short_12: X7NJH7NPHUJN · pith_short_16: X7NJH7NPHUJN7WRM · pith_short_8: X7NJH7NP

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/X7NJH7NPHUJN7WRMM6MWXUW6IH \
  | 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: bfda93fdaf3d12dfda2c67996bd2de41d55e736b40ce1f30a1691879e75b9785

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "47d1f04e487c0891cfcb98471c158669fcf4129468864f2e0a1c72ca9839f468",
    "cross_cats_sorted": [
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2018-09-27T01:24:09Z",
    "title_canon_sha256": "5be792d22254cde3b238c8fe62eef17f755897566cd3e2f1c2b6350510b2957c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.10302",
    "kind": "arxiv",
    "version": 1
  }
}