Pith Number

pith:FNNCEUBC

pith:2020:FNNCEUBCCJ6CVL7QWI4NAQQ5HJ

not attested not anchored not stored refs pending

An energy-based natural selection model

G. Abramson, N. Abadi

arxiv:2011.06945 v1 · 2020-11-13 · q-bio.PE · nlin.AO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FNNCEUBCCJ6CVL7QWI4NAQQ5HJ}

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	2026-07-05T03:01:10.974148Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b5a225022127c2aaff0b238d0421d3a7b71d09510cf9f461766e6f3917de276

Aliases

arxiv: 2011.06945 · arxiv_version: 2011.06945v1 · doi: 10.48550/arxiv.2011.06945 · pith_short_12: FNNCEUBCCJ6C · pith_short_16: FNNCEUBCCJ6CVL7Q · pith_short_8: FNNCEUBC

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/FNNCEUBCCJ6CVL7QWI4NAQQ5HJ \
  | 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: 2b5a225022127c2aaff0b238d0421d3a7b71d09510cf9f461766e6f3917de276

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9b379b2def40527972a3a08ec34e694ebf3aa81a4e136b9e411b837d6b2267f",
    "cross_cats_sorted": [
      "nlin.AO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2020-11-13T14:41:23Z",
    "title_canon_sha256": "15fe2219076c86be86622236f55e59c04815aaeb30c9861617ded0853d778f63"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2011.06945",
    "kind": "arxiv",
    "version": 1
  }
}