Pith Number

pith:6QYOG7DK

pith:2005:6QYOG7DK6RNI5U7YGLMM7NSTNH

not attested not anchored not stored refs pending

Problems with Pencils: Lensing Covariance of Supernova Distance Measurements

Asantha Cooray, Daniel Holz, Dragan Huterer

arxiv:astro-ph/0509581 v1 · 2005-09-20 · 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{6QYOG7DK6RNI5U7YGLMM7NSTNH}

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	2026-05-18T04:22:20.625629Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f430e37c6af45a8ed3f832d8cfb65369eb2755afe5681baf89e38fb87ca60b89

Aliases

arxiv: astro-ph/0509581 · arxiv_version: astro-ph/0509581v1 · doi: 10.48550/arxiv.astro-ph/0509581 · pith_short_12: 6QYOG7DK6RNI · pith_short_16: 6QYOG7DK6RNI5U7Y · pith_short_8: 6QYOG7DK

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/6QYOG7DK6RNI5U7YGLMM7NSTNH \
  | 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: f430e37c6af45a8ed3f832d8cfb65369eb2755afe5681baf89e38fb87ca60b89

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c4a729094927d4d9b44351c5a1ed731624417b17cbae2c64b0a8fb12e656e90",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-09-20T08:44:21Z",
    "title_canon_sha256": "8190a4d55461ad98bdcc5b25794ca4d97631ba6f1ba3e2eff578053be6fd047d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0509581",
    "kind": "arxiv",
    "version": 1
  }
}