Pith Number

pith:ZOT24PPU

pith:2000:ZOT24PPU3MOV6ZY6HGQTZ26W2R

not attested not anchored not stored refs pending

Galaxy surface photometry

Bo Milvang-Jensen (Copenhagen, Inger Jorgensen (Gemini), Nottingham)

arxiv:astro-ph/0004049 v1 · 2000-04-04 · 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{ZOT24PPU3MOV6ZY6HGQTZ26W2R}

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	2026-05-18T00:21:05.572829Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cba7ae3df4db1d5f671e39a13cebd6d47dc75351608dbef67439adf35f619ff4

Aliases

arxiv: astro-ph/0004049 · arxiv_version: astro-ph/0004049v1 · doi: 10.48550/arxiv.astro-ph/0004049 · pith_short_12: ZOT24PPU3MOV · pith_short_16: ZOT24PPU3MOV6ZY6 · pith_short_8: ZOT24PPU

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/ZOT24PPU3MOV6ZY6HGQTZ26W2R \
  | 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: cba7ae3df4db1d5f671e39a13cebd6d47dc75351608dbef67439adf35f619ff4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ea22bb4b5dd5ae19e377babe4705d5b3d673761765f85c5a2e275255f150459",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-04-04T20:15:31Z",
    "title_canon_sha256": "8e566d8f6315ef08df647054eca14441d87306769a0005f0ee8cb963b37de33e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0004049",
    "kind": "arxiv",
    "version": 1
  }
}