Pith Number

pith:4H4FM3XZ

pith:2017:4H4FM3XZTVPV3BKTJHG576Y3EQ

not attested not anchored not stored refs pending

Twitter Activity Timeline as a Signature of Urban Neighborhood

Cheng Qian, Constantine Kontokosta, Philipp Kats, Stanislav Sobolevsky

arxiv:1707.06122 v1 · 2017-07-19 · 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{4H4FM3XZTVPV3BKTJHG576Y3EQ}

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	2026-05-18T00:39:57.583434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1f8566ef99d5f5d855349cddffb1b2407c544bac605c79e8adf03fb1fceb34e

Aliases

arxiv: 1707.06122 · arxiv_version: 1707.06122v1 · doi: 10.48550/arxiv.1707.06122 · pith_short_12: 4H4FM3XZTVPV · pith_short_16: 4H4FM3XZTVPV3BKT · pith_short_8: 4H4FM3XZ

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/4H4FM3XZTVPV3BKTJHG576Y3EQ \
  | 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: e1f8566ef99d5f5d855349cddffb1b2407c544bac605c79e8adf03fb1fceb34e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b2ad38cfd0cfd16c1270f93bf480cbcc55a20fdd1d2620bff798c07adc2d06ae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2017-07-19T14:39:15Z",
    "title_canon_sha256": "e934281680683d49a51a148f09c21a871c3caee6c2169c3a17d7d721c1127952"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.06122",
    "kind": "arxiv",
    "version": 1
  }
}