Pith Number

pith:BWDDGA2J

pith:2019:BWDDGA2JTGY4OEQM5SIPUP4EAF

not attested not anchored not stored refs pending

Identifying long-term periodic cycles and memories of collective emotion in online social media

Hideki Takayasu, Misako Takayasu, Shlomo Havlin, Yukie Sano

arxiv:1903.06410 v2 · 2019-03-15 · cs.SI · 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{BWDDGA2JTGY4OEQM5SIPUP4EAF}

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	2026-05-17T23:43:02.957252Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d8633034999b1c7120cec90fa3f8401691752abbb59624be697ccbe9fe71ebf

Aliases

arxiv: 1903.06410 · arxiv_version: 1903.06410v2 · doi: 10.48550/arxiv.1903.06410 · pith_short_12: BWDDGA2JTGY4 · pith_short_16: BWDDGA2JTGY4OEQM · pith_short_8: BWDDGA2J

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/BWDDGA2JTGY4OEQM5SIPUP4EAF \
  | 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: 0d8633034999b1c7120cec90fa3f8401691752abbb59624be697ccbe9fe71ebf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9e28b446e70971aabb04a8af69b6fb7a16bfc240d7050e3782bc58c5092ef106",
    "cross_cats_sorted": [
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2019-03-15T08:48:28Z",
    "title_canon_sha256": "d13ddf3d5457b9c8844036127ea1fbf6bd9210279ac82d2933d0f22377f6b3fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.06410",
    "kind": "arxiv",
    "version": 2
  }
}