Pith Number

pith:3GEY6VFM

pith:2003:3GEY6VFMDDP6SXOPGY2ULDAGPC

not attested not anchored not stored refs pending

Extreme blazars

G. Ghisellini (Osserv. Astr. di Brera, Italy), Merate

arxiv:astro-ph/0306429 v1 · 2003-06-21 · 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{3GEY6VFMDDP6SXOPGY2ULDAGPC}

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	2026-07-04T16:52:01.523256Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d9898f54ac18dfe95dcf3635458c06789a63177583cc60bdbd5e3c2052b970f5

Aliases

arxiv: astro-ph/0306429 · arxiv_version: astro-ph/0306429v1 · doi: 10.48550/arxiv.astro-ph/0306429 · pith_short_12: 3GEY6VFMDDP6 · pith_short_16: 3GEY6VFMDDP6SXOP · pith_short_8: 3GEY6VFM

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/3GEY6VFMDDP6SXOPGY2ULDAGPC \
  | 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: d9898f54ac18dfe95dcf3635458c06789a63177583cc60bdbd5e3c2052b970f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8371c6a04ded0335e9fb4766a75d8f4faf31d05a56800935d3df2f8d4a22a96",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-06-21T07:56:44Z",
    "title_canon_sha256": "b151a0b24db2b94848136be561e7c44d8e1f58b577e1c04de4b8f150ec6632fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0306429",
    "kind": "arxiv",
    "version": 1
  }
}