Pith Number

pith:2CO35IOE

pith:2014:2CO35IOEFYAPSVSVQA4NKJ3AKQ

not attested not anchored not stored refs pending

Collapse of an ecological network in Ancient Egypt

Justin D. Yeakel, Lars Rudolf, Mathias M. Pires, Nathaniel J. Dominy, Paul L. Koch, Paulo R. Guimar\~aes Jr., Thilo gross

arxiv:1409.7006 v1 · 2014-09-24 · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2CO35IOEFYAPSVSVQA4NKJ3AKQ}

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	2026-05-18T02:42:00.037705Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d09dbea1c42e00f956558038d52760540383e5eeb938dd115bf94a7f313898b9

Aliases

arxiv: 1409.7006 · arxiv_version: 1409.7006v1 · doi: 10.48550/arxiv.1409.7006 · pith_short_12: 2CO35IOEFYAP · pith_short_16: 2CO35IOEFYAPSVSV · pith_short_8: 2CO35IOE

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/2CO35IOEFYAPSVSVQA4NKJ3AKQ \
  | 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: d09dbea1c42e00f956558038d52760540383e5eeb938dd115bf94a7f313898b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe87a04345bf2fe83209daf1f2be06a24ffc661c6bba701ea69b5a2217d0765d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2014-09-24T16:09:14Z",
    "title_canon_sha256": "7f5c54450d08d4800c8b9a5aea0e66b7adb3ed800aa223bea688f98dc6c0134e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.7006",
    "kind": "arxiv",
    "version": 1
  }
}