Pith Number

pith:DV7BPVTI

pith:2018:DV7BPVTISEHFQ7UMZFTX55VRZM

not attested not anchored not stored refs pending

Coupling between death spikes and birth troughs. Part 2: Comparative analysis of salient features

Bertrand M. Roehner, Peter Richmond

arxiv:1801.04535 v1 · 2018-01-14 · physics.soc-ph · physics.bio-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{DV7BPVTISEHFQ7UMZFTX55VRZM}

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	2026-05-18T00:26:04.104939Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d7e17d668910e587e8cc9677ef6b1cb217a518f19dbc15235628050d0a1e297

Aliases

arxiv: 1801.04535 · arxiv_version: 1801.04535v1 · doi: 10.48550/arxiv.1801.04535 · pith_short_12: DV7BPVTISEHF · pith_short_16: DV7BPVTISEHFQ7UM · pith_short_8: DV7BPVTI

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/DV7BPVTISEHFQ7UMZFTX55VRZM \
  | 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: 1d7e17d668910e587e8cc9677ef6b1cb217a518f19dbc15235628050d0a1e297

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c9d84e1a77e32669481f0515e48c4834b6095919e9941bad13f463e7601ee41",
    "cross_cats_sorted": [
      "physics.bio-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2018-01-14T11:27:00Z",
    "title_canon_sha256": "bb27e2ae51fcc704398b0a1083f81955c0aaf1ed23b29f7870b6079deec606c3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.04535",
    "kind": "arxiv",
    "version": 1
  }
}