Pith Number

pith:CYPZOSRK

pith:2011:CYPZOSRKSCI7SR2NPFRGVPGDAD

not attested not anchored not stored refs pending

A new cosmological distance measure using AGN

(2) U. Queensland), D. Watson (1), K. D. Denney (1), M. Vestergaard (1), T. M. Davis (2) ((1) Dark Cosmology Centre, U. Copenhagen

arxiv:1109.4632 v1 · 2011-09-21 · 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{CYPZOSRKSCI7SR2NPFRGVPGDAD}

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	2026-05-18T04:11:41.525615Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

161f974a2a9091f9474d79626abcc300fe57354c920b0917a38666bd30705349

Aliases

arxiv: 1109.4632 · arxiv_version: 1109.4632v1 · doi: 10.48550/arxiv.1109.4632 · pith_short_12: CYPZOSRKSCI7 · pith_short_16: CYPZOSRKSCI7SR2N · pith_short_8: CYPZOSRK

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/CYPZOSRKSCI7SR2NPFRGVPGDAD \
  | 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: 161f974a2a9091f9474d79626abcc300fe57354c920b0917a38666bd30705349

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c7b8e3a60a9acb312e8c55226836b783a666ca494555db3d94793b4e4a9d02f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-09-21T20:00:00Z",
    "title_canon_sha256": "45700e3752c9131aa4087845d0f85265a76b32732220ab920465f51ce5571e70"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.4632",
    "kind": "arxiv",
    "version": 1
  }
}