Pith Number

pith:EMPSOUNV

pith:2013:EMPSOUNVWVXIGTJARC2MJZZLVG

not attested not anchored not stored refs pending

The awakening of BL Lacertae: observations by Fermi, Swift, and the GASP-WEBT

C. M. Raiteri, D. O. Mirzaqulov, F. D'Ammando, M. A. Gurwell, M. Villata, P. S. Smith (for the GASP-WEBT collaboration), V. M. Larionov

arxiv:1309.1282 v1 · 2013-09-05 · 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{EMPSOUNVWVXIGTJARC2MJZZLVG}

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	2026-07-04T23:54:52.348247Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

231f2751b5b56e834d2088b4c4e72ba9812a05eb725e16f7a9a7dab1bb5aa324

Aliases

arxiv: 1309.1282 · arxiv_version: 1309.1282v1 · doi: 10.48550/arxiv.1309.1282 · pith_short_12: EMPSOUNVWVXI · pith_short_16: EMPSOUNVWVXIGTJA · pith_short_8: EMPSOUNV

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/EMPSOUNVWVXIGTJARC2MJZZLVG \
  | 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: 231f2751b5b56e834d2088b4c4e72ba9812a05eb725e16f7a9a7dab1bb5aa324

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d484e4b2a7d2c8aa3220463367016bea2e837b51f56dd3db8b80a75c445598d",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-09-05T09:05:30Z",
    "title_canon_sha256": "74f266c5f263f24e77c75312b42cb11831c2fe264db1b6e6f0cb95340edf0c28"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.1282",
    "kind": "arxiv",
    "version": 1
  }
}