Pith Number

pith:NIWTHFPY

pith:2010:NIWTHFPY3UFXPGE5AJS65EQ33U

not attested not anchored not stored refs pending

Gamma-ray Spectral Evolution of NGC1275 Observed with Fermi-LAT

A.Celotti, C.C.Cheung, D.J.Thompson, E.Cavazzuti, G.Tosti, J.Kataoka, L.Stawarz, S.Nishino, W.F.McConville, Y.Fukazawa

arxiv:1004.2352 v1 · 2010-04-14 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NIWTHFPY3UFXPGE5AJS65EQ33U}

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	2026-05-18T02:33:34.327876Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a2d3395f8dd0b77989d0265ee921bdd2ab1dfdf4fd6ebd371fd5a8c2f51f0b4

Aliases

arxiv: 1004.2352 · arxiv_version: 1004.2352v1 · doi: 10.48550/arxiv.1004.2352 · pith_short_12: NIWTHFPY3UFX · pith_short_16: NIWTHFPY3UFXPGE5 · pith_short_8: NIWTHFPY

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/NIWTHFPY3UFXPGE5AJS65EQ33U \
  | 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: 6a2d3395f8dd0b77989d0265ee921bdd2ab1dfdf4fd6ebd371fd5a8c2f51f0b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c44831e9cceead18271e994eb82f4923c66460f87947c98314d39b46dc6797c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2010-04-14T08:41:30Z",
    "title_canon_sha256": "a1a40ae790bea12624eabd8300c8b686747871a50d8d04b40737e48963365ec9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.2352",
    "kind": "arxiv",
    "version": 1
  }
}