Pith Number

pith:NF4OB7AB

pith:2012:NF4OB7AB2TT2NVUONW2FUBDEN2

not attested not anchored not stored refs pending

The persistence of social signatures in human communication

E. A. Leicht, E. Lopez, F. Reed-Tsochas, J. Saramaki, R. I. M. Dunbar, S. G. B. Roberts

arxiv:1204.5602 v2 · 2012-04-25 · 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{NF4OB7AB2TT2NVUONW2FUBDEN2}

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	2026-05-18T02:47:53.231682Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6978e0fc01d4e7a6d68e6db45a04646ea95dc9a7936ebdb2d4a80a0a7fccaf46

Aliases

arxiv: 1204.5602 · arxiv_version: 1204.5602v2 · doi: 10.48550/arxiv.1204.5602 · pith_short_12: NF4OB7AB2TT2 · pith_short_16: NF4OB7AB2TT2NVUO · pith_short_8: NF4OB7AB

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/NF4OB7AB2TT2NVUONW2FUBDEN2 \
  | 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: 6978e0fc01d4e7a6d68e6db45a04646ea95dc9a7936ebdb2d4a80a0a7fccaf46

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e618b1edb5da6506c09e07faf2028c44fa6e42f52f9f68f5c8b47ec8b3c3dc3a",
    "cross_cats_sorted": [
      "cs.SI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2012-04-25T09:45:43Z",
    "title_canon_sha256": "94e3bf61459513f0ea1e11b11a7e2fde2e1cd657d81707b03ff0a3cd798b1c89"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.5602",
    "kind": "arxiv",
    "version": 2
  }
}