Pith Number

pith:GSC4VVYY

pith:2015:GSC4VVYY55MYCTMBDFZVAWFIWG

not attested not anchored not stored refs pending

Improved Spectrophotometric Calibration of the SDSS-III BOSS Quasar Sample

Daniel Margala, David Kirkby, Donald P. Schneider, Kyle Dawson, Michael Blanton, Stephen Bailey

arxiv:1506.04790 v1 · 2015-06-15 · astro-ph.IM · 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{GSC4VVYY55MYCTMBDFZVAWFIWG}

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	2026-05-18T00:59:27.703385Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3485cad718ef59814d8119735058a8b180820a7b9f8dfbbec4a15384eeef4b13

Aliases

arxiv: 1506.04790 · arxiv_version: 1506.04790v1 · doi: 10.48550/arxiv.1506.04790 · pith_short_12: GSC4VVYY55MY · pith_short_16: GSC4VVYY55MYCTMB · pith_short_8: GSC4VVYY

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/GSC4VVYY55MYCTMBDFZVAWFIWG \
  | 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: 3485cad718ef59814d8119735058a8b180820a7b9f8dfbbec4a15384eeef4b13

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72f095dccfc64f386167f897330d36d1c812bf59caf8416aa042c080a3b9f67f",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2015-06-15T22:35:05Z",
    "title_canon_sha256": "eeb9d46256f2759e9bfe07d01422197e0208b8c42e5077b8f708241d6df9f2d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.04790",
    "kind": "arxiv",
    "version": 1
  }
}