Pith Number

pith:QHNCL5DJ

pith:2007:QHNCL5DJ56CMOYRTQ22DVUDLGF

not attested not anchored not stored refs pending

Information capacity of genetic regulatory elements

Curtis G Callan Jr, Gasper Tkacik, William Bialek

arxiv:0709.4209 v1 · 2007-09-26 · 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{QHNCL5DJ56CMOYRTQ22DVUDLGF}

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	2026-05-18T03:17:12.386520Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81da25f469ef84c7623386b43ad06b31724b8d3a6827c76609b7c0b784f2deee

Aliases

arxiv: 0709.4209 · arxiv_version: 0709.4209v1 · doi: 10.48550/arxiv.0709.4209 · pith_short_12: QHNCL5DJ56CM · pith_short_16: QHNCL5DJ56CMOYRT · pith_short_8: QHNCL5DJ

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/QHNCL5DJ56CMOYRTQ22DVUDLGF \
  | 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: 81da25f469ef84c7623386b43ad06b31724b8d3a6827c76609b7c0b784f2deee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a5d357dc1287f896bfb9e806ec3d08ea0d78c6bb8daa2185bb7b6152570ada14",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "q-bio.MN",
    "submitted_at": "2007-09-26T16:31:30Z",
    "title_canon_sha256": "02d5aec6b94a4a1f74ba959e0658854699257a5da0fe852dbe1f7e35a1a06925"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0709.4209",
    "kind": "arxiv",
    "version": 1
  }
}