Pith Number

pith:AUFF4MEF

pith:2000:AUFF4MEFXTVECZN3I6MWHPAEWD

not attested not anchored not stored refs pending

A large high-energy gamma-ray flare from the blazar 3C 273

G.G. Lichti, H. Bloemen, H. Steinle, J. Ryan, K. Bennett, M. Boettcher, O. Reimer, O.R. Williams, V. Schoenfelder, W. Collmar, W. Hermsen

arxiv:astro-ph/0001204 v1 · 2000-01-12 · 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{AUFF4MEFXTVECZN3I6MWHPAEWD}

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	2026-07-04T14:10:06.175656Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

050a5e3085bcea4165bb479963bc04b0c825892381c5c6262d0245d3b41c9a63

Aliases

arxiv: astro-ph/0001204 · arxiv_version: astro-ph/0001204v1 · doi: 10.48550/arxiv.astro-ph/0001204 · pith_short_12: AUFF4MEFXTVE · pith_short_16: AUFF4MEFXTVECZN3 · pith_short_8: AUFF4MEF

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/AUFF4MEFXTVECZN3I6MWHPAEWD \
  | 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: 050a5e3085bcea4165bb479963bc04b0c825892381c5c6262d0245d3b41c9a63

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51e9916f2f344ac3038e8218156e64713eacbb8f3410632bc4992bdd3ab7021f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-01-12T12:43:52Z",
    "title_canon_sha256": "217e64c60d444bad8f4e0fd9dc6d78fe6e1c29c4524236fa973b4dfc1d4ea0b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0001204",
    "kind": "arxiv",
    "version": 1
  }
}