Pith Number

pith:VXTF5M45

pith:2012:VXTF5M45MIMYEI7QQMWESNX3OP

not attested not anchored not stored refs pending

Surface Brightness Fluctuations as Primary and Secondary Distance Indicators

John Blakeslee

arxiv:1202.0581 v1 · 2012-02-02 · 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{VXTF5M45MIMYEI7QQMWESNX3OP}

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	2026-05-18T04:03:08.556286Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ade65eb39d62198223f0832c4936fb73c7fcd9aa732affdaa1338b7b925af33f

Aliases

arxiv: 1202.0581 · arxiv_version: 1202.0581v1 · doi: 10.48550/arxiv.1202.0581 · pith_short_12: VXTF5M45MIMY · pith_short_16: VXTF5M45MIMYEI7Q · pith_short_8: VXTF5M45

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/VXTF5M45MIMYEI7QQMWESNX3OP \
  | 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: ade65eb39d62198223f0832c4936fb73c7fcd9aa732affdaa1338b7b925af33f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5708601bb7604b0d8d2a73784158a3857a1b81e8e0a9440682f97f56902fceef",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-02-02T23:34:55Z",
    "title_canon_sha256": "bf22ba8b9d4ec348a02869acdefb22c3d57eb1fc481859d92a0a3001daf15e4e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.0581",
    "kind": "arxiv",
    "version": 1
  }
}