Pith Number

pith:3CUANA2Y

pith:2015:3CUANA2YT7LUU7B7JVI3JNDGXS

not attested not anchored not stored refs pending

The first ultraviolet quasar stacked spectrum at z=2.4 from WFC3

C. Vignali, E. Lusso, G. Worseck, J. F. Hennawi, J. M. O'Meara, J. Stern, J. X. Prochaska

arxiv:1503.02075 v2 · 2015-03-06 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3CUANA2YT7LUU7B7JVI3JNDGXS}

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	2026-05-18T01:40:53.045455Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d8a80683589fd74a7c3f4d51b4b466bc9191d637a24c22a1c26b28f5f7c716a1

Aliases

arxiv: 1503.02075 · arxiv_version: 1503.02075v2 · doi: 10.48550/arxiv.1503.02075 · pith_short_12: 3CUANA2YT7LU · pith_short_16: 3CUANA2YT7LUU7B7 · pith_short_8: 3CUANA2Y

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/3CUANA2YT7LUU7B7JVI3JNDGXS \
  | 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: d8a80683589fd74a7c3f4d51b4b466bc9191d637a24c22a1c26b28f5f7c716a1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "32edb4d7832f541ebf168d31dacc6725d55e554c024fd8880d9be3d9faa970d4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-03-06T21:00:10Z",
    "title_canon_sha256": "a238780e906d697a1e7790e25706986a2b94dc9fa57399823a39759c4226af0e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.02075",
    "kind": "arxiv",
    "version": 2
  }
}