Pith Number

pith:VB7MOAV2

pith:2009:VB7MOAV265XUOMJR46TGJR6QDI

not attested not anchored not stored refs pending

The colour of the narrow line Sy1-blazar 0324+3410

I.W.A. Browne, M.J. Marcha, S. Anton

arxiv:0907.2400 v1 · 2009-07-14 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VB7MOAV265XUOMJR46TGJR6QDI}

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	2026-05-18T02:13:03.134209Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a87ec702baf76f473131e7a664c7d01a1b6e7d5e47e8ae6f94bf99d5461dd3be

Aliases

arxiv: 0907.2400 · arxiv_version: 0907.2400v1 · doi: 10.48550/arxiv.0907.2400 · pith_short_12: VB7MOAV265XU · pith_short_16: VB7MOAV265XUOMJR · pith_short_8: VB7MOAV2

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/VB7MOAV265XUOMJR46TGJR6QDI \
  | 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: a87ec702baf76f473131e7a664c7d01a1b6e7d5e47e8ae6f94bf99d5461dd3be

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c1947d64b986492c60525d52e1206c43b512ca81e15d97f22fc6105d45c324b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-07-14T16:27:54Z",
    "title_canon_sha256": "fb884e876d7f273427d3394aa3203a1828d05add1adb65ce8c123a85e79bb565"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.2400",
    "kind": "arxiv",
    "version": 1
  }
}