Pith Number

pith:JNMUN7B3

pith:2013:JNMUN7B3VSAWN25I3RI6DKNMJR

not attested not anchored not stored refs pending

21-cm absorption from galaxies at z ~ 0.3

France), India), IUCAA, N. Gupta (IUCAA, P. Noterdaeme (IAP, P. Petitjean (IAP, R. Srianand (IUCAA, S. Muzahid (PSU, USA

arxiv:1308.4141 v2 · 2013-08-19 · astro-ph.GA · 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{JNMUN7B3VSAWN25I3RI6DKNMJR}

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	2026-05-18T01:48:13.806864Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b5946fc3bac8166eba8dc51e1a9ac4c5de17610eb894d962951f98473853c05

Aliases

arxiv: 1308.4141 · arxiv_version: 1308.4141v2 · doi: 10.48550/arxiv.1308.4141 · pith_short_12: JNMUN7B3VSAW · pith_short_16: JNMUN7B3VSAWN25I · pith_short_8: JNMUN7B3

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/JNMUN7B3VSAWN25I3RI6DKNMJR \
  | 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: 4b5946fc3bac8166eba8dc51e1a9ac4c5de17610eb894d962951f98473853c05

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a96c667324eb2a7c3194e47de3cd432ce6b84cd2c766d04ae256f747ce30110",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-08-19T20:00:02Z",
    "title_canon_sha256": "effd803deaf44f62f7a5aec85eea2ee69bfef88ff97b29b430c7ee06ea99f52a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.4141",
    "kind": "arxiv",
    "version": 2
  }
}