Pith Number

pith:7ZOXX4TN

pith:2005:7ZOXX4TNRRVTPRDU6BQPQNGDNV

not attested not anchored not stored refs pending

Measuring Extinction Curves of Lensing Galaxies

Christina McGough, Geoffrey C. Clayton, Karl D. Gordon, & Michael J. Wolff

arxiv:astro-ph/0501489 v1 · 2005-01-22 · 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{7ZOXX4TNRRVTPRDU6BQPQNGDNV}

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	2026-07-04T16:50:41.228993Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe5d7bf26d8c6b37c474f060f834c36d596f52d626bab9cdf25f7afb4c34762a

Aliases

arxiv: astro-ph/0501489 · arxiv_version: astro-ph/0501489v1 · doi: 10.48550/arxiv.astro-ph/0501489 · pith_short_12: 7ZOXX4TNRRVT · pith_short_16: 7ZOXX4TNRRVTPRDU · pith_short_8: 7ZOXX4TN

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/7ZOXX4TNRRVTPRDU6BQPQNGDNV \
  | 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: fe5d7bf26d8c6b37c474f060f834c36d596f52d626bab9cdf25f7afb4c34762a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ece23491f0c2d6953cf80c823ca8ecd303a3bba0a13d006239c593d233829a3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-01-22T21:07:45Z",
    "title_canon_sha256": "45c63249c77595953812523739d31aca9c3a4f1519761700a117d58fec81982e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0501489",
    "kind": "arxiv",
    "version": 1
  }
}