Pith Number

pith:PFKFWI5O

pith:2009:PFKFWI5O6OABKAUCUJ33YOIAXW

not attested not anchored not stored refs pending

Optimizing information flow in small genetic networks. II: Feed forward interactions

Aleksandra M. Walczak, Gapser Tkacik, William Bialek

arxiv:0912.5500 v1 · 2009-12-30 · 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{PFKFWI5O6OABKAUCUJ33YOIAXW}

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	2026-05-18T03:23:49.688015Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

79545b23aef380150282a277bc3900bd8047ee13ca9cdce85f2258c240ae8091

Aliases

arxiv: 0912.5500 · arxiv_version: 0912.5500v1 · doi: 10.48550/arxiv.0912.5500 · pith_short_12: PFKFWI5O6OAB · pith_short_16: PFKFWI5O6OABKAUC · pith_short_8: PFKFWI5O

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/PFKFWI5O6OABKAUCUJ33YOIAXW \
  | 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: 79545b23aef380150282a277bc3900bd8047ee13ca9cdce85f2258c240ae8091

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5084a6617c5d51eb5b6d549f7c424f09018b23a8ecee6bdb8727d6c01027db94",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.MN",
    "submitted_at": "2009-12-30T18:14:33Z",
    "title_canon_sha256": "3a07bb629718898b9d453d0f85629c39bf7306c4a548f533c1ee8a32de7fa4cb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.5500",
    "kind": "arxiv",
    "version": 1
  }
}