Pith Number

pith:CB5NRD4Q

pith:2013:CB5NRD4QKZVBSEFUD2OFM5DUWX

not attested not anchored not stored refs pending

Enantiomer-specific isotope analysis of D- and L-alanine: Nitrogen isotopic hetero- and homogeneity in microbial and chemical processes

Naohiko Ohkouchi, Yoshinori Takano, Yoshito Chikaraishi

arxiv:1310.1453 v1 · 2013-10-05 · q-bio.BM · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CB5NRD4QKZVBSEFUD2OFM5DUWX}

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	2026-05-18T03:11:11.977277Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

107ad88f90566a1910b41e9c567474b5d33d569930d29b01fdc3d7b5a96b1b2a

Aliases

arxiv: 1310.1453 · arxiv_version: 1310.1453v1 · doi: 10.48550/arxiv.1310.1453 · pith_short_12: CB5NRD4QKZVB · pith_short_16: CB5NRD4QKZVBSEFU · pith_short_8: CB5NRD4Q

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/CB5NRD4QKZVBSEFUD2OFM5DUWX \
  | 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: 107ad88f90566a1910b41e9c567474b5d33d569930d29b01fdc3d7b5a96b1b2a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d18bc122b3798e424d5beb38fb32c3951cded64bbd5545a375493396b936cb8",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "q-bio.BM",
    "submitted_at": "2013-10-05T07:52:01Z",
    "title_canon_sha256": "dbb9d289f441bb94a3d7f559c6b719d4dc94766fe517eaa879ba9e37dd314c2a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.1453",
    "kind": "arxiv",
    "version": 1
  }
}