Pith Number

pith:YJ7YVGTV

pith:2011:YJ7YVGTVI3P3UB3QL7KVOZHTW7

not attested not anchored not stored refs pending

Self-organization in social tagging systems

Chi Ho Yeung, Chuang Liu, Zi-Ke Zhang

arxiv:1102.3989 v1 · 2011-02-19 · physics.soc-ph · 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{YJ7YVGTVI3P3UB3QL7KVOZHTW7}

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	2026-05-18T04:20:05.477767Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c27f8a9a7546dfba07705fd55764f3b7ee29a550a2dcb4811c647aa3ef4ff815

Aliases

arxiv: 1102.3989 · arxiv_version: 1102.3989v1 · doi: 10.48550/arxiv.1102.3989 · pith_short_12: YJ7YVGTVI3P3 · pith_short_16: YJ7YVGTVI3P3UB3Q · pith_short_8: YJ7YVGTV

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/YJ7YVGTVI3P3UB3QL7KVOZHTW7 \
  | 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: c27f8a9a7546dfba07705fd55764f3b7ee29a550a2dcb4811c647aa3ef4ff815

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b8db4082442b86af2418f4a8925e79203af4b245c9d4c6fe27c7bd544d55f94b",
    "cross_cats_sorted": [
      "cs.SI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2011-02-19T13:09:40Z",
    "title_canon_sha256": "306c0e5cb14fd20e491f3711dab9ea6b2836be2113b3269b7dd4d2eb063d35f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.3989",
    "kind": "arxiv",
    "version": 1
  }
}