Pith Number

pith:YQZS4AIR

pith:2007:YQZS4AIRGZGF54A4SBRCVBIK3Q

not attested not anchored not stored refs pending

Directionality is an inherent property of biochemical networks

Daniel A. Beard, Feng Qi, Feng Yang

arxiv:q-bio/0701004 v2 · 2007-01-02 · 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{YQZS4AIRGZGF54A4SBRCVBIK3Q}

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	2026-07-04T14:59:10.955495Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4332e0111364c5ef01c90622a850adc35ba1fc21114c275e8a88fd074e2898b

Aliases

arxiv: q-bio/0701004 · arxiv_version: q-bio/0701004v2 · doi: 10.48550/arxiv.q-bio/0701004 · pith_short_12: YQZS4AIRGZGF · pith_short_16: YQZS4AIRGZGF54A4 · pith_short_8: YQZS4AIR

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/YQZS4AIRGZGF54A4SBRCVBIK3Q \
  | 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: c4332e0111364c5ef01c90622a850adc35ba1fc21114c275e8a88fd074e2898b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "abbd0d33e41ea5721c1de84d03f1917f373256c8c3d9866568ecf4519011d2af",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "q-bio.MN",
    "submitted_at": "2007-01-02T22:26:38Z",
    "title_canon_sha256": "1ba31ca25da5251694737033dba8955eedb923009df8843d6d9dee0f8caff2fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "q-bio/0701004",
    "kind": "arxiv",
    "version": 2
  }
}