Pith Number

pith:N4FN27PS

pith:2011:N4FN27PSHJPX52HNPKYBZ3GGOV

not attested not anchored not stored refs pending

The Pittsburgh Sloan Digital Sky Survey MgII Quasar Absorption-Line Survey Catalog

Anja N. Weyant, Anna M. Quider, Daniel B. Nestor, David A. Turnshek, Eric M. Monier, Joseph R. Busche, Sandhya M. Rao

arxiv:1103.1626 v1 · 2011-03-08 · 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{N4FN27PSHJPX52HNPKYBZ3GGOV}

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	2026-05-18T02:02:56.279149Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f0add7df23a5f7ee8ed7ab01cecc6755238eacd89797abfa341b41625ac4f1c

Aliases

arxiv: 1103.1626 · arxiv_version: 1103.1626v1 · doi: 10.48550/arxiv.1103.1626 · pith_short_12: N4FN27PSHJPX · pith_short_16: N4FN27PSHJPX52HN · pith_short_8: N4FN27PS

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/N4FN27PSHJPX52HNPKYBZ3GGOV \
  | 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: 6f0add7df23a5f7ee8ed7ab01cecc6755238eacd89797abfa341b41625ac4f1c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "18e983d360a1a0be710b6e43ae1f43db3db244bbb3fe5f9ae08f62dcbdf0ff50",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-03-08T20:52:05Z",
    "title_canon_sha256": "0d844615830e44459aca7b8351f076555fe436a68c285a422fd336eacf480e0a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.1626",
    "kind": "arxiv",
    "version": 1
  }
}