Pith Number

pith:4Y2RI4KY

pith:2011:4Y2RI4KYQA3APBTX3CAZA45OP7

not attested not anchored not stored refs pending

Distances to Galaxies from the Brightest Stars in the Universe

2, (2) Max-Planck-Institute for Astrophysics, 3), (3) University Observatory Munich), M.A. Urbaneja (1) ((1) Institute for Astronomy, R.-P. Kudritzki (1, UH

arxiv:1112.3935 v1 · 2011-12-16 · astro-ph.CO · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4Y2RI4KYQA3APBTX3CAZA45OP7}

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	2026-05-18T01:59:06.525603Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e6351471588036078677d8819073ae7feafb1892b045167cc08f357cd411fee8

Aliases

arxiv: 1112.3935 · arxiv_version: 1112.3935v1 · doi: 10.48550/arxiv.1112.3935 · pith_short_12: 4Y2RI4KYQA3A · pith_short_16: 4Y2RI4KYQA3APBTX · pith_short_8: 4Y2RI4KY

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/4Y2RI4KYQA3APBTX3CAZA45OP7 \
  | 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: e6351471588036078677d8819073ae7feafb1892b045167cc08f357cd411fee8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b117b8becba73fbd9ffbd44c0c0c9caacb8b6bf56b60fb30ddbe5fe7ccb3a318",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-12-16T20:11:56Z",
    "title_canon_sha256": "430a1e7bf026e760af0643492c5bbf16257207895f071c5c386536959223b9c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.3935",
    "kind": "arxiv",
    "version": 1
  }
}