Pith Number

pith:26HPBDCM

pith:2015:26HPBDCMILMA6GENSVFMCPDPLT

not attested not anchored not stored refs pending

Photon underproduction crisis: Are QSOs sufficient to resolve it?

Raghunathan Srianand, Vikram Khaire

arxiv:1503.07168 v2 · 2015-03-24 · 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{26HPBDCMILMA6GENSVFMCPDPLT}

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.

Cited by

1 paper in Pith

Machine Learning Techniques for Astrophysics and Cosmology: Lyman-$\alpha$ forest

Receipt and verification

First computed	2026-05-18T01:04:50.632641Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d78ef08c4c42d80f188d954ac13c6f5cc8de837c058da7adc306575c66628dbc

Aliases

arxiv: 1503.07168 · arxiv_version: 1503.07168v2 · doi: 10.48550/arxiv.1503.07168 · pith_short_12: 26HPBDCMILMA · pith_short_16: 26HPBDCMILMA6GEN · pith_short_8: 26HPBDCM

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/26HPBDCMILMA6GENSVFMCPDPLT \
  | 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: d78ef08c4c42d80f188d954ac13c6f5cc8de837c058da7adc306575c66628dbc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "21d017f8dae1b1ec41b932c077b6dfb1872d9cfff0c79d35b9bad771d744c5c6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2015-03-24T20:00:21Z",
    "title_canon_sha256": "95999ec6b9901dd30ecff0d4515d3ed52c99cd1759d08fbe8b272118dd616a4e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.07168",
    "kind": "arxiv",
    "version": 2
  }
}