Pith Number

pith:6JY4IBGO

pith:2018:6JY4IBGO6CZA4UQ35JRDW4R4ZS

not attested not anchored not stored refs pending

Deciphering the fluctuations of high frequency birth rates

Bertrand M. Roehner, Claudiu Herteliu, Peter Richmond

arxiv:1802.08966 v1 · 2018-02-25 · physics.bio-ph · 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{6JY4IBGO6CZA4UQ35JRDW4R4ZS}

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	2026-05-18T00:09:15.970853Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f271c404cef0b20e521bea623b723ccc86b87b466f7978d83388e05ab1916d5b

Aliases

arxiv: 1802.08966 · arxiv_version: 1802.08966v1 · doi: 10.48550/arxiv.1802.08966 · pith_short_12: 6JY4IBGO6CZA · pith_short_16: 6JY4IBGO6CZA4UQ3 · pith_short_8: 6JY4IBGO

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/6JY4IBGO6CZA4UQ35JRDW4R4ZS \
  | 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: f271c404cef0b20e521bea623b723ccc86b87b466f7978d83388e05ab1916d5b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "538fbe51dff70d8c280dbd79b3a1092d4df190c50ccc92ff1e82403a25c4951c",
    "cross_cats_sorted": [
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.bio-ph",
    "submitted_at": "2018-02-25T08:35:33Z",
    "title_canon_sha256": "732c33af241061d7db4b94d2251124fb9ca00bfcb2e301aa853f3c87137c0711"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.08966",
    "kind": "arxiv",
    "version": 1
  }
}