Pith Number

pith:QENUM3LU

pith:2015:QENUM3LUJ4FJJGUFPWOV4SMKG5

not attested not anchored not stored refs pending

ALMA observations of 99 GHz free-free and H40$\alpha$ line emission from star formation in the centre of NGC 253

C. Dickinson, G. A. Fuller, G. J. Bendo, M. J. D'Cruze, R. J. Beswick, T. W. B. Muxlow

arxiv:1504.02142 v1 · 2015-04-08 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QENUM3LUJ4FJJGUFPWOV4SMKG5}

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	2026-05-18T02:04:01.137336Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

811b466d744f0a949a857d9d5e498a374ccaac4f85dcabaf16b1c5efe1c3ed7b

Aliases

arxiv: 1504.02142 · arxiv_version: 1504.02142v1 · doi: 10.48550/arxiv.1504.02142 · pith_short_12: QENUM3LUJ4FJ · pith_short_16: QENUM3LUJ4FJJGUF · pith_short_8: QENUM3LU

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/QENUM3LUJ4FJJGUFPWOV4SMKG5 \
  | 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: 811b466d744f0a949a857d9d5e498a374ccaac4f85dcabaf16b1c5efe1c3ed7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1dab25969f1345e5169e223b678cd322ec6720d83c5b5b2c5c4991563fe0fd16",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-04-08T22:03:00Z",
    "title_canon_sha256": "35bc95da765a3f6dc309b503711ca3901f0b670e67020550214f4771d3dbb6df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.02142",
    "kind": "arxiv",
    "version": 1
  }
}