Pith Number

pith:WHI5K5UX

pith:2000:WHI5K5UXS24FHGKGCNLVPFXASM

not attested not anchored not stored refs pending

The cosmological evolution of BL Lacs: The REX point of view

A. Caccianiga, A. Wolter, I.M. Gioia, R. Della Ceca, T. Maccacaro

arxiv:astro-ph/0009388 v1 · 2000-09-25 · 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{WHI5K5UXS24FHGKGCNLVPFXASM}

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	2026-07-04T14:10:44.802419Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b1d1d5769796b853994613575796e0932a5b8446e068f7bdfa07c125bf373e54

Aliases

arxiv: astro-ph/0009388 · arxiv_version: astro-ph/0009388v1 · doi: 10.48550/arxiv.astro-ph/0009388 · pith_short_12: WHI5K5UXS24F · pith_short_16: WHI5K5UXS24FHGKG · pith_short_8: WHI5K5UX

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/WHI5K5UXS24FHGKGCNLVPFXASM \
  | 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: b1d1d5769796b853994613575796e0932a5b8446e068f7bdfa07c125bf373e54

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "00b09b7f62b9a00af16a939bd996de69197e7dfcdebb2ee2e9d0205d9e6486c9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-09-25T12:43:33Z",
    "title_canon_sha256": "655c5b3040c8ab6f924dd06e3f15139b4074e72f90c6b5e2826b9429ded6013e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0009388",
    "kind": "arxiv",
    "version": 1
  }
}