Pith Number

pith:4NYLXDMM

pith:2013:4NYLXDMMWD5M34JFQL67HIDHR7

not attested not anchored not stored refs pending

A Significantly Low CO Abundance Toward the TW Hya Protoplanetary Disk: A Path to Active Carbon Chemistry?

C\'ecile Favre, Chunhua Qi, Edwin A. Bergin, Geoffrey A. Blake, L. Ilsedore Cleeves

arxiv:1309.5370 v1 · 2013-09-20 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4NYLXDMMWD5M34JFQL67HIDHR7}

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	2026-05-18T01:47:34.848233Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e370bb8d8cb0facdf12582fdf3a0678fd974c3767972cf7dd2c517f25520d90a

Aliases

arxiv: 1309.5370 · arxiv_version: 1309.5370v1 · doi: 10.48550/arxiv.1309.5370 · pith_short_12: 4NYLXDMMWD5M · pith_short_16: 4NYLXDMMWD5M34JF · pith_short_8: 4NYLXDMM

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/4NYLXDMMWD5M34JFQL67HIDHR7 \
  | 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: e370bb8d8cb0facdf12582fdf3a0678fd974c3767972cf7dd2c517f25520d90a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e6cfd1ecc576749b3d0da5c8c0cea7eb3338fffaa219e27c6bc0b98c2d57725e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-09-20T20:10:52Z",
    "title_canon_sha256": "794e8f453b6ca7c6e4da144ae9e4de2469431d92afdbca0b187cf949aeace22d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.5370",
    "kind": "arxiv",
    "version": 1
  }
}