Pith Number

pith:3FAQNGUA

pith:2017:3FAQNGUAKQ4B5GMFGCK6FV7UAT

not attested not anchored not stored refs pending

Natural selection as coarsening

Matteo Smerlak

arxiv:1707.05317 v2 · 2017-07-17 · q-bio.PE · cond-mat.stat-mech

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3FAQNGUAKQ4B5GMFGCK6FV7UAT}

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	2026-05-18T00:28:55.040425Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d941069a8054381e99853095e2d7f404cf483c33890537fc2d6ca435c64f5b24

Aliases

arxiv: 1707.05317 · arxiv_version: 1707.05317v2 · doi: 10.48550/arxiv.1707.05317 · pith_short_12: 3FAQNGUAKQ4B · pith_short_16: 3FAQNGUAKQ4B5GMF · pith_short_8: 3FAQNGUA

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/3FAQNGUAKQ4B5GMFGCK6FV7UAT \
  | 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: d941069a8054381e99853095e2d7f404cf483c33890537fc2d6ca435c64f5b24

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c4d58a5c54e9d1c331b4856f4b1cbe1a908ac2094ee5ca639aac0ee2b5ad02a",
    "cross_cats_sorted": [
      "cond-mat.stat-mech"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2017-07-17T15:33:42Z",
    "title_canon_sha256": "c6df05f12ed63457b46b98ed20bca26c488dbfc6b7068590b792e7f7a33aa5c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.05317",
    "kind": "arxiv",
    "version": 2
  }
}