Pith Number

pith:V6INV6AA

pith:2009:V6INV6AACWCN6TCTIF64F465M3

not attested not anchored not stored refs pending

Identifying Anomalies in Gravitational Lens Time Delays

Arthur B. Congdon, C. Erik Nordgren, Charles R. Keeton

arxiv:0911.2456 v2 · 2009-11-12 · 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{V6INV6AACWCN6TCTIF64F465M3}

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	2026-05-18T02:34:11.056830Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af90daf8001584df4c53417dc2f3dd66c6f40789ab4dfc6480420c7db8a38a31

Aliases

arxiv: 0911.2456 · arxiv_version: 0911.2456v2 · doi: 10.48550/arxiv.0911.2456 · pith_short_12: V6INV6AACWCN · pith_short_16: V6INV6AACWCN6TCT · pith_short_8: V6INV6AA

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/V6INV6AACWCN6TCTIF64F465M3 \
  | 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: af90daf8001584df4c53417dc2f3dd66c6f40789ab4dfc6480420c7db8a38a31

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd6c9af892b874f3226f63ddcff91323acdd6fa6c99b0180990e1a5f91642899",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-11-12T20:04:38Z",
    "title_canon_sha256": "6d867e15d69dd8797602d1643cf02ce72565c7093a906203b73bb6312bf3c244"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.2456",
    "kind": "arxiv",
    "version": 2
  }
}