Pith Number

pith:UB4IICOK

pith:2019:UB4IICOKN4OTBKIQXXHUFRFMRB

not attested not anchored not stored refs pending

Gamma-ray luminosity function of BL Lac objects and contribution to the extragalactic gamma-ray background

Dahai Yan, Houdun Zeng, Yankun Qu

arxiv:1909.07542 v1 · 2019-09-17 · astro-ph.HE · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UB4IICOKN4OTBKIQXXHUFRFMRB}

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

Limits on primordial black holes from the extragalactic gamma-ray background; current status and future projections

Receipt and verification

First computed	2026-07-05T00:08:39.634077Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0788409ca6f1d30a910bdcf42c4ac8853fac2abb14e7c51e4b711b17103610a

Aliases

arxiv: 1909.07542 · arxiv_version: 1909.07542v1 · doi: 10.48550/arxiv.1909.07542 · pith_short_12: UB4IICOKN4OT · pith_short_16: UB4IICOKN4OTBKIQ · pith_short_8: UB4IICOK

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/UB4IICOKN4OTBKIQXXHUFRFMRB \
  | 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: a0788409ca6f1d30a910bdcf42c4ac8853fac2abb14e7c51e4b711b17103610a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5014e44828caee8f73652d2cddef7ce11a7b962b0ecd2ca53e355f1889def28f",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-09-17T01:27:09Z",
    "title_canon_sha256": "2ab7dd861e4cc75bf628472b6a7f95ff59332e825df8ebf144ea6b6dcebd34f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.07542",
    "kind": "arxiv",
    "version": 1
  }
}