Pith Number

pith:5H2Y5VWM

pith:2006:5H2Y5VWMGDATIOFR4IDB5NVCU6

not attested not anchored not stored refs pending

The Star Formation Histories of the Bulge and Disk of M31 from Gemini North+NIRI/Altair and HST/NICMOS

Andrew W. Stephens, Francois Rigaut, Knut A.G. Olsen, Philip Massey, Robert D. Blum, Stephen E. Strom, Tim J. Davidge

arxiv:astro-ph/0603793 v1 · 2006-03-29 · 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{5H2Y5VWMGDATIOFR4IDB5NVCU6}

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	2026-07-04T15:25:45.602406Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9f58ed6cc30c13438b1e2061eb6a2a7ac2596fd79ad2aee9104779ae9840a3f

Aliases

arxiv: astro-ph/0603793 · arxiv_version: astro-ph/0603793v1 · doi: 10.48550/arxiv.astro-ph/0603793 · pith_short_12: 5H2Y5VWMGDAT · pith_short_16: 5H2Y5VWMGDATIOFR · pith_short_8: 5H2Y5VWM

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/5H2Y5VWMGDATIOFR4IDB5NVCU6 \
  | 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: e9f58ed6cc30c13438b1e2061eb6a2a7ac2596fd79ad2aee9104779ae9840a3f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "580ca2953893cf1803227353babf486473ffc5c59237ddc22988a6f5ec5efd4c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-03-29T15:38:48Z",
    "title_canon_sha256": "8dad9975cd280bb5cce6d63f0dc573e5eba239cc74f7059869f263495f06f9e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0603793",
    "kind": "arxiv",
    "version": 1
  }
}