Pith Number

pith:QHKQJRXV

pith:2019:QHKQJRXV26BEL4FR2ISYMESZ7W

not attested not anchored not stored refs pending

Detecting Permanent and Intermittent Purchase Hotspots via Computational Stigmergy

Alex "Sandy" Pentland, Antonio L. Alfeo, Bruno Lepri, Gigliola Vaglini, Mario G. C. A. Cimino

arxiv:1902.01601 v1 · 2019-02-05 · cs.SI · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QHKQJRXV26BEL4FR2ISYMESZ7W}

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	2026-05-17T23:54:47.194688Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81d504c6f5d78245f0b1d225861259fd9d26b94a78854137666d08454c510662

Aliases

arxiv: 1902.01601 · arxiv_version: 1902.01601v1 · doi: 10.48550/arxiv.1902.01601 · pith_short_12: QHKQJRXV26BE · pith_short_16: QHKQJRXV26BEL4FR · pith_short_8: QHKQJRXV

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/QHKQJRXV26BEL4FR2ISYMESZ7W \
  | 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: 81d504c6f5d78245f0b1d225861259fd9d26b94a78854137666d08454c510662

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1608e5b3bea79a785a53aa8176e42cd74db374dd7b2c363ac649e7f09436f7c2",
    "cross_cats_sorted": [
      "cs.CY"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2019-02-05T09:24:50Z",
    "title_canon_sha256": "7eb0b7d986aa091430e5ddd39288cba4cc09417423c835da3843f3a87b2408ca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.01601",
    "kind": "arxiv",
    "version": 1
  }
}