Pith Number

pith:2KU2MB6B

pith:2005:2KU2MB6BNYAVET7STWNODSIZIU

not attested not anchored not stored refs pending

Multiwavelength Observations of the Blazar Mrk 421 in December 2002 and January 2003

A. Sadun, A. Sillanpaa, D. Kranich, H. Aller, I. Jung, M. Aller, P. Boltwood, P. Rebillot (for the VERITAS Collaboration)

arxiv:astro-ph/0512628 v2 · 2005-12-28 · 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{2KU2MB6BNYAVET7STWNODSIZIU}

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.

Cited by

1 paper in Pith

Probing Spectral Evolution and Intrinsic Variability of Mkn\,421: A Multi-Epoch AstroSat Study of X-ray Spectra

Receipt and verification

First computed	2026-07-04T23:56:39.244679Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d2a9a607c16e01524ff29d9ae1c919450830d2c21845557a2424b9306b101d31

Aliases

arxiv: astro-ph/0512628 · arxiv_version: astro-ph/0512628v2 · doi: 10.48550/arxiv.astro-ph/0512628 · pith_short_12: 2KU2MB6BNYAV · pith_short_16: 2KU2MB6BNYAVET7S · pith_short_8: 2KU2MB6B

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/2KU2MB6BNYAVET7STWNODSIZIU \
  | 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: d2a9a607c16e01524ff29d9ae1c919450830d2c21845557a2424b9306b101d31

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e1927f50dd12d0325df3cfeb8c18a77f1d960404d20d46014a452c4d628948e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-12-28T15:51:48Z",
    "title_canon_sha256": "97fc1e2db87ab47a22db388537bd54ba99c342d2c15e1a537e140de2e7036324"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0512628",
    "kind": "arxiv",
    "version": 2
  }
}