Pith Number

pith:Z4JAO3VZ

pith:2013:Z4JAO3VZNHTXT3RUWEWWJFUM3C

not attested not anchored not stored refs pending

Autocatalytic Sets and Biological Specificity

Mike Steel, Peter R. Wills, Wim Hordijk

arxiv:1307.2860 v1 · 2013-07-10 · q-bio.MN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z4JAO3VZNHTXT3RUWEWWJFUM3C}

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	2026-05-18T03:18:50.239470Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf12076eb969e779ee34b12d64968cd89f0fb23fc54d49aad9fe3ef619d53766

Aliases

arxiv: 1307.2860 · arxiv_version: 1307.2860v1 · doi: 10.48550/arxiv.1307.2860 · pith_short_12: Z4JAO3VZNHTX · pith_short_16: Z4JAO3VZNHTXT3RU · pith_short_8: Z4JAO3VZ

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/Z4JAO3VZNHTXT3RUWEWWJFUM3C \
  | 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: cf12076eb969e779ee34b12d64968cd89f0fb23fc54d49aad9fe3ef619d53766

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad6511a3d5cafce6c0b1e6e0cef6d4712ad69503e094660ce4216dfcd06e26b2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.MN",
    "submitted_at": "2013-07-10T17:34:19Z",
    "title_canon_sha256": "ea5f18c01bca97c16d63854a0bd13ec509751091ab80923015ed4a2fc358f830"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.2860",
    "kind": "arxiv",
    "version": 1
  }
}