Pith Number

pith:QUMOC5YX

pith:2013:QUMOC5YXL33TYN6C2JEYXEOX4X

not attested not anchored not stored refs pending

Extremely Metal-Poor Galaxies: The HI Content

A. B. Morales-Luis, A. Humphrey, B. G. Elmegreen, B. Winkel, C. Mu\~noz-Tu\~n\'on, D. M. Elmegreen, J. A. Aguerri, J. M. Gomes, J. M. V\'ilchez, M. E. Filho, P. Lagos, P. Papaderos, R. Amor\'in, S\'anchez Almeida, Y. Ascasibar

arxiv:1307.4899 v1 · 2013-07-18 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QUMOC5YXL33TYN6C2JEYXEOX4X}

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	2026-05-18T01:48:43.005246Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8518e177175ef73c37c2d2498b91d7e5c16dd212ea76442f5b25b166dcae2006

Aliases

arxiv: 1307.4899 · arxiv_version: 1307.4899v1 · doi: 10.48550/arxiv.1307.4899 · pith_short_12: QUMOC5YXL33T · pith_short_16: QUMOC5YXL33TYN6C · pith_short_8: QUMOC5YX

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/QUMOC5YXL33TYN6C2JEYXEOX4X \
  | 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: 8518e177175ef73c37c2d2498b91d7e5c16dd212ea76442f5b25b166dcae2006

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cdffc0e3ccebf7022756872c97abeefda17e37fca8d547172ec2166756294aba",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-07-18T10:42:54Z",
    "title_canon_sha256": "750177d8b0166fd51137b2e2e4a4a0c541849e65744bf85473a3026030392c04"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.4899",
    "kind": "arxiv",
    "version": 1
  }
}