Pith Number

pith:J5JWX5AM

pith:2015:J5JWX5AMLU62C6RIQYTIWLC65B

not attested not anchored not stored refs pending

Extinction dynamics of a discrete population in an oasis

Angelo Vulpiani, Davide Vergni, Massimo Cencini, Stefano Berti

arxiv:1509.01381 v1 · 2015-09-04 · q-bio.PE · 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{J5JWX5AMLU62C6RIQYTIWLC65B}

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	2026-05-18T01:33:57.782723Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4f536bf40c5d3da17a2886268b2c5ee8663df10439093606c7dce8d50ca72168

Aliases

arxiv: 1509.01381 · arxiv_version: 1509.01381v1 · doi: 10.48550/arxiv.1509.01381 · pith_short_12: J5JWX5AMLU62 · pith_short_16: J5JWX5AMLU62C6RI · pith_short_8: J5JWX5AM

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/J5JWX5AMLU62C6RIQYTIWLC65B \
  | 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: 4f536bf40c5d3da17a2886268b2c5ee8663df10439093606c7dce8d50ca72168

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0bd65cae668f9d6b2eccc98ea88a760e812362e9acdd79f294d7f01e59d12d68",
    "cross_cats_sorted": [
      "physics.bio-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2015-09-04T09:34:58Z",
    "title_canon_sha256": "f46b133c21f16916e44cf630ca4db99fc2eda9533b13ea415d213afc645fd419"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.01381",
    "kind": "arxiv",
    "version": 1
  }
}