Pith Number

pith:3BTTWZZZ

pith:2007:3BTTWZZZDAD2PCCWMSPVI7NU5I

not attested not anchored not stored refs pending

Optimizing future imaging survey of galaxies to confront dark energy and modified gravity models

David Parkinson, Kazuhiro Yamamoto, Robert C. Nichol, Takashi Hamana, Yasushi Suto

arxiv:0704.2949 v3 · 2007-04-23 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3BTTWZZZDAD2PCCWMSPVI7NU5I}

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	2026-05-18T02:35:31.240586Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d8673b67391807a78856649f547db4ea3699bbcef71e846ab9f8ec48544fb7d6

Aliases

arxiv: 0704.2949 · arxiv_version: 0704.2949v3 · doi: 10.48550/arxiv.0704.2949 · pith_short_12: 3BTTWZZZDAD2 · pith_short_16: 3BTTWZZZDAD2PCCW · pith_short_8: 3BTTWZZZ

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/3BTTWZZZDAD2PCCWMSPVI7NU5I \
  | 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: d8673b67391807a78856649f547db4ea3699bbcef71e846ab9f8ec48544fb7d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f40e664bdf028c84acd854a9ad543f39bb9cad6d7b23559282c51bc9121b9b1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-04-23T08:59:45Z",
    "title_canon_sha256": "f166a2182fe5d68b3bcbb5356d5fd426303beca2ac8dc1b7af3257d1c85cb889"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0704.2949",
    "kind": "arxiv",
    "version": 3
  }
}