Pith Number

pith:D4G7MHZ5

pith:2012:D4G7MHZ5DIBJVJLKWIZGU342GV

not attested not anchored not stored refs pending

B2 0954+25A: a typical Fermi blazar or a gamma-loud Narrow Line Seyfert 1

G. Calderone, G. Ghisellini, M. Colpi, M. Dotti

arxiv:1202.3790 v2 · 2012-02-16 · astro-ph.HE · 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{D4G7MHZ5DIBJVJLKWIZGU342GV}

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	2026-05-18T01:58:24.282466Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f0df61f3d1a029aa56ab2326a6f9a355b538ff5b9df7bf8ca65e4b830c435d2

Aliases

arxiv: 1202.3790 · arxiv_version: 1202.3790v2 · doi: 10.48550/arxiv.1202.3790 · pith_short_12: D4G7MHZ5DIBJ · pith_short_16: D4G7MHZ5DIBJVJLK · pith_short_8: D4G7MHZ5

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/D4G7MHZ5DIBJVJLKWIZGU342GV \
  | 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: 1f0df61f3d1a029aa56ab2326a6f9a355b538ff5b9df7bf8ca65e4b830c435d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3feb227caa726de5c70d2d6131fa57fe83be60763bb55bf498a1ee30916bda16",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-02-16T21:00:14Z",
    "title_canon_sha256": "d331692047ce112539c67416c910bed6f52a193e2a644b8c500d1fa5c275e527"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.3790",
    "kind": "arxiv",
    "version": 2
  }
}