Pith Number

pith:GDX4IMDN

pith:2012:GDX4IMDNUZOE4YHW4RLNTPFAMF

not attested not anchored not stored refs pending

X-ray Monitoring of Gravitational Lenses With Chandra

Bin Chen, Christopher S. Kochanek, Christopher W. Morgan, George Chartas, Jeffery A. Blackburne, Xinyu Dai

arxiv:1202.5304 v1 · 2012-02-23 · astro-ph.HE · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GDX4IMDNUZOE4YHW4RLNTPFAMF}

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	2026-05-18T01:58:20.181864Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

30efc4306da65c4e60f6e456d9bca0614f71547d632addf66e491fb14e58d8e6

Aliases

arxiv: 1202.5304 · arxiv_version: 1202.5304v1 · doi: 10.48550/arxiv.1202.5304 · pith_short_12: GDX4IMDNUZOE · pith_short_16: GDX4IMDNUZOE4YHW · pith_short_8: GDX4IMDN

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/GDX4IMDNUZOE4YHW4RLNTPFAMF \
  | 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: 30efc4306da65c4e60f6e456d9bca0614f71547d632addf66e491fb14e58d8e6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f909682d4781a09435d36d16c7dec85d12594b6e48100a4c721daf9313a2f42e",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-02-23T21:00:00Z",
    "title_canon_sha256": "8aa761d3f52b0481479e7dc57fae8456cd8963e81b6bea3ca1b5649aac3e87f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.5304",
    "kind": "arxiv",
    "version": 1
  }
}