Pith Number

pith:2EWK6JPL

pith:2000:2EWK6JPL73W7NC72UFU6PCZZCI

not attested not anchored not stored refs pending

New Extreme Synchrotron BL Lac Objects

A. Celotti, A. Treves, A. Wolter, E. Pian, F. Tavecchio, G. Fossati, G. Ghisellini, G. Tagliaferri, L. Chiappetti, L. Costamante, L. Maraschi, M. Chiaberge, P. Giommi

arxiv:astro-ph/0001410 v2 · 2000-01-24 · 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{2EWK6JPL73W7NC72UFU6PCZZCI}

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	2026-07-04T16:15:57.581116Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d12caf25ebfeedf68bfaa169e78b39122f038bbcb4636d0a8d88b165170410fb

Aliases

arxiv: astro-ph/0001410 · arxiv_version: astro-ph/0001410v2 · doi: 10.48550/arxiv.astro-ph/0001410 · pith_short_12: 2EWK6JPL73W7 · pith_short_16: 2EWK6JPL73W7NC72 · pith_short_8: 2EWK6JPL

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/2EWK6JPL73W7NC72UFU6PCZZCI \
  | 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: d12caf25ebfeedf68bfaa169e78b39122f038bbcb4636d0a8d88b165170410fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b57df99cb794152b22d04265d7faa83548cb260972c397662ee5733e0462953",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-01-24T16:44:30Z",
    "title_canon_sha256": "31a6f47ec5fa7ee5dd64ec26d61964d10b29f374db85cd3f90a64fbca81b2393"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0001410",
    "kind": "arxiv",
    "version": 2
  }
}