Pith Number

pith:WFH65OZQ

pith:2010:WFH65OZQSYINVR5FWC4TSNEE6V

not attested not anchored not stored refs pending

A method for setting upper limits to the extragalactic background light with Fermi-LAT and TeV observations of blazars

Justin D. Finke, Luis C. Reyes, Markos Georganopoulos

arxiv:1004.0017 v1 · 2010-03-31 · 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{WFH65OZQSYINVR5FWC4TSNEE6V}

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	2026-05-18T02:08:15.276332Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b14feebb309610dac7a5b0b9393484f5475f31d65213ea390345387c31123086

Aliases

arxiv: 1004.0017 · arxiv_version: 1004.0017v1 · doi: 10.48550/arxiv.1004.0017 · pith_short_12: WFH65OZQSYIN · pith_short_16: WFH65OZQSYINVR5F · pith_short_8: WFH65OZQ

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/WFH65OZQSYINVR5FWC4TSNEE6V \
  | 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: b14feebb309610dac7a5b0b9393484f5475f31d65213ea390345387c31123086

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a905e339e3aa22ff804dce285a55b5520ceec02a661d59a9880d96d3aa1bb348",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-03-31T21:59:41Z",
    "title_canon_sha256": "66a19ced7f2a81553543c0952aa1bcc666bcc16aef0d9606f2aad118f3cb4736"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.0017",
    "kind": "arxiv",
    "version": 1
  }
}