Pith Number

pith:VEW4UPYF

pith:2025:VEW4UPYF7QKOBKTPFK7LN3WFUX

not attested not anchored not stored refs pending

Information and fitness in two-state systems: self-replicating individuals in a fluctuating environment

Abhyudai Singh, Cesar Nieto, Juan Manuel Pedraza, Poulami Chatterjee

arxiv:2508.00150 v1 · 2025-07-31 · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VEW4UPYF7QKOBKTPFK7LN3WFUX}

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	2026-07-05T11:46:49.866256Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a92dca3f05fc14e0aa6f2abeb6eec5a5cdd9bbddf7b1a2975fa8adb3c9c1dd9e

Aliases

arxiv: 2508.00150 · arxiv_version: 2508.00150v1 · doi: 10.48550/arxiv.2508.00150 · pith_short_12: VEW4UPYF7QKO · pith_short_16: VEW4UPYF7QKOBKTP · pith_short_8: VEW4UPYF

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/VEW4UPYF7QKOBKTPFK7LN3WFUX \
  | 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: a92dca3f05fc14e0aa6f2abeb6eec5a5cdd9bbddf7b1a2975fa8adb3c9c1dd9e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74344e474359e4463cea1b8210bcb078e0109d4ebd6159584e0ceff24d0a9d25",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2025-07-31T20:22:41Z",
    "title_canon_sha256": "87604ed1f2c7a7f394dca5f6a515c6226432b44bdf073e8bb58aedb8f09b2d4e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.00150",
    "kind": "arxiv",
    "version": 1
  }
}