Pith Number

pith:43Q46YCI

pith:2011:43Q46YCIL52UXJ6MYQYFEH2VVX

not attested not anchored not stored refs pending

Herschel/PACS spectroscopy of NGC 4418 and Arp 220: H2O, H2^{18}O, OH, ^{18}OH, O I, HCN and NH3

A. Contursi, A. Poglitsch, A. Sternberg, A. Verma, D. Lutz, E. Gonz\'alez-Alfonso, E. Sturm, H. Feuchtgruber, H. W. W. Spoon, J. Fischer, J. Graci\'a-Carpio, L. Tacconi, N. Christopher, R. Davies, R. Genzel, S. Hailey-Dunsheath, S. Veilleux

arxiv:1109.1118 v2 · 2011-09-06 · astro-ph.CO

Open paper page JSON What is a Pith Number?

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

Receipt and verification

First computed	2026-05-18T02:00:39.145110Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e6e1cf60485f754ba7ccc430521f55ade99e2195197b272475885ba17db9d6f2

Aliases

arxiv: 1109.1118 · arxiv_version: 1109.1118v2 · doi: 10.48550/arxiv.1109.1118 · pith_short_12: 43Q46YCIL52U · pith_short_16: 43Q46YCIL52UXJ6M · pith_short_8: 43Q46YCI

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/43Q46YCIL52UXJ6MYQYFEH2VVX \
  | 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: e6e1cf60485f754ba7ccc430521f55ade99e2195197b272475885ba17db9d6f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c0b340b5bf7c7f9739c7180eda62753e444cce1219d257f8d4b4e7a74eadf1e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-09-06T09:05:23Z",
    "title_canon_sha256": "115c27b10a675713da4c042d324afb818b905f418179352b05a968743044d6e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.1118",
    "kind": "arxiv",
    "version": 2
  }
}