Pith Number

pith:3PWPQPOD

pith:2026:3PWPQPODQUTIZ3EAE3IBITZUKC

not attested not anchored not stored refs pending

Measuring What the Crawler Sees: Discovery Curves, Core Persistence, and Shell Dynamics in Longitudinal Web Crawls

Hande Celikkanat, Luca Foppiano, Michael Paris

arxiv:2607.13636 v1 · 2026-07-15 · physics.soc-ph · cs.DL · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3PWPQPODQUTIZ3EAE3IBITZUKC}

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	2026-07-16T01:22:58.091597Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dbecf83dc385268cec8026d0144f3450bf0fff0d4f788ee63f6ad5f126eb381d

Aliases

arxiv: 2607.13636 · arxiv_version: 2607.13636v1 · doi: 10.48550/arxiv.2607.13636 · pith_short_12: 3PWPQPODQUTI · pith_short_16: 3PWPQPODQUTIZ3EA · pith_short_8: 3PWPQPOD

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/3PWPQPODQUTIZ3EAE3IBITZUKC \
  | 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: dbecf83dc385268cec8026d0144f3450bf0fff0d4f788ee63f6ad5f126eb381d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed72ab45367827540792a1dd5567c4fedbf2c1ff12cf0766733a2ef740a8fcda",
    "cross_cats_sorted": [
      "cs.DL",
      "cs.IR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2026-07-15T09:29:24Z",
    "title_canon_sha256": "bf4789d0f4fda544781679813d4514d10be8624049d9023e642bb86296afe831"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.13636",
    "kind": "arxiv",
    "version": 1
  }
}