Pith Number

pith:O3LDGSA3

pith:2013:O3LDGSA3QYZ46CAZFKTWR42R2Z

not attested not anchored not stored refs pending

The Nature of the Second Parameter in the IRX-beta Relation for Local Galaxies

Daniela Calzetti, Daniel A. Dale, Janice C. Lee, Jennifer E. Andrews, Kathryn Grasha

arxiv:1307.1680 v1 · 2013-07-05 · astro-ph.GA · 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{O3LDGSA3QYZ46CAZFKTWR42R2Z}

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	2026-05-18T01:48:59.313448Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

76d633481b8633cf08192aa768f351d66f8868cfce6c47980f5374717607e5b8

Aliases

arxiv: 1307.1680 · arxiv_version: 1307.1680v1 · doi: 10.48550/arxiv.1307.1680 · pith_short_12: O3LDGSA3QYZ4 · pith_short_16: O3LDGSA3QYZ46CAZ · pith_short_8: O3LDGSA3

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/O3LDGSA3QYZ46CAZFKTWR42R2Z \
  | 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: 76d633481b8633cf08192aa768f351d66f8868cfce6c47980f5374717607e5b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0e340b963ac7741c04861c652d2d4c77b13c9242b9e71cb753dc7ba54f042268",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-07-05T18:01:50Z",
    "title_canon_sha256": "c9a2f4c31ab6fa1f04a05bc2e60713c516b539809c38c2d1edb98317c6850eba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.1680",
    "kind": "arxiv",
    "version": 1
  }
}