Pith Number

pith:T4VP5MCK

pith:2004:T4VP5MCKUAA2NCE6ICGY5KT25M

not attested not anchored not stored refs pending

Exploring the Gamma Ray Horizon with the next generation of Gamma Ray Telescopes. Part 3: Optimizing the observation schedule of gamma-ray sources for the extraction of cosmological parameters

M. Martinez, O. Blanch

arxiv:astro-ph/0409591 v1 · 2004-09-24 · astro-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{T4VP5MCKUAA2NCE6ICGY5KT25M}

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	2026-07-04T16:44:45.311008Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f2afeb04aa001a6889e408d8eaa7aeb28451861689df6387ce29a4ec17600d8

Aliases

arxiv: astro-ph/0409591 · arxiv_version: astro-ph/0409591v1 · doi: 10.48550/arxiv.astro-ph/0409591 · pith_short_12: T4VP5MCKUAA2 · pith_short_16: T4VP5MCKUAA2NCE6 · pith_short_8: T4VP5MCK

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/T4VP5MCKUAA2NCE6ICGY5KT25M \
  | 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: 9f2afeb04aa001a6889e408d8eaa7aeb28451861689df6387ce29a4ec17600d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "350edf03411e5cf3f60cc930b2160aeafba31788e7e50e424c9573b24e56d05a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-09-24T16:10:45Z",
    "title_canon_sha256": "d40cbf41cf51e39112eaf9bc059925266c5e13c96349e17aa94bd6b0960b317b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0409591",
    "kind": "arxiv",
    "version": 1
  }
}