Pith Number

pith:R3JNUYCB

pith:2000:R3JNUYCB6AO6PWGAS6XFPYLBPH

not attested not anchored not stored refs pending

The Cosmological Evolution of BL Lacertae Objects

A. Pellizzoni, M. Perri, P. Giommi, P. Padovani

arxiv:astro-ph/0012075 v1 · 2000-12-04 · 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{R3JNUYCB6AO6PWGAS6XFPYLBPH}

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	2026-07-04T14:10:55.558854Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ed2da6041f01de7d8c097ae57e16179c5f5c503014498dbfe3cf0775a1b9fcd

Aliases

arxiv: astro-ph/0012075 · arxiv_version: astro-ph/0012075v1 · doi: 10.48550/arxiv.astro-ph/0012075 · pith_short_12: R3JNUYCB6AO6 · pith_short_16: R3JNUYCB6AO6PWGA · pith_short_8: R3JNUYCB

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/R3JNUYCB6AO6PWGAS6XFPYLBPH \
  | 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: 8ed2da6041f01de7d8c097ae57e16179c5f5c503014498dbfe3cf0775a1b9fcd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eb5a9dea279ddb760f614ed4c985d99bf6ed282cf2811bb47bde7250ca724892",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-12-04T13:50:00Z",
    "title_canon_sha256": "00009a84a1b57b76041c2a72d7e547e5ceb60bd2901940d340ed881b30337a33"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0012075",
    "kind": "arxiv",
    "version": 1
  }
}