Pith Number

pith:NPHVEZN4

pith:2019:NPHVEZN4QZZXAKH3ITJTVJSLGP

not attested not anchored not stored refs pending

Genetic drift in range expansions is very sensitive to density feedback in dispersal and growth

Gabriel Birzu, Kirill S. Korolev, Oskar Hallatschek, Sakib Matin

arxiv:1903.11627 v1 · 2019-03-27 · q-bio.PE · cond-mat.stat-mech · 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{NPHVEZN4QZZXAKH3ITJTVJSLGP}

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	2026-05-17T23:50:02.177958Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bcf5265bc86737028fb44d33aa64b33ed621e8a591eb466eccf0edb7cfbdf98

Aliases

arxiv: 1903.11627 · arxiv_version: 1903.11627v1 · doi: 10.48550/arxiv.1903.11627 · pith_short_12: NPHVEZN4QZZX · pith_short_16: NPHVEZN4QZZXAKH3 · pith_short_8: NPHVEZN4

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/NPHVEZN4QZZXAKH3ITJTVJSLGP \
  | 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: 6bcf5265bc86737028fb44d33aa64b33ed621e8a591eb466eccf0edb7cfbdf98

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ebdc0ed69f36d95294493a713cebe0ad5a5b26ed517e80d1efa687cea07a5cdb",
    "cross_cats_sorted": [
      "cond-mat.stat-mech",
      "physics.bio-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2019-03-27T18:07:14Z",
    "title_canon_sha256": "dbcf0c21d8c23c65a342ae709c92be22f2b06ac89d0931c62aa6769d78a4ef27"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.11627",
    "kind": "arxiv",
    "version": 1
  }
}