Pith Number

pith:6PHL6SNM

pith:2004:6PHL6SNMKMKSCSDSVZ4VYYYGMG

not attested not anchored not stored refs pending

Evolution of optically faint AGN from COMBO-17 and GEMS

A. Borch, B. Haeussler, C. Wolf, C.Y. Peng (the GEMS collaboration), D.H. McIntosh, E.F. Bell, H.-W. Rix, J.A.R. Caldwell, K. Jahnke, K. Meisenheimer, L. Wisotzki, M. Barden, R.S. Somerville, S.F. Sanchez, S. Jogee, S.V.W. Beckwith

arxiv:astro-ph/0404331 v1 · 2004-04-16 · 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{6PHL6SNMKMKSCSDSVZ4VYYYGMG}

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	2026-05-18T00:37:17.419965Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f3cebf49ac5315214872ae795c6306619bdb7a44a9ce71a8ff36745d03bd817e

Aliases

arxiv: astro-ph/0404331 · arxiv_version: astro-ph/0404331v1 · doi: 10.48550/arxiv.astro-ph/0404331 · pith_short_12: 6PHL6SNMKMKS · pith_short_16: 6PHL6SNMKMKSCSDS · pith_short_8: 6PHL6SNM

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/6PHL6SNMKMKSCSDSVZ4VYYYGMG \
  | 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: f3cebf49ac5315214872ae795c6306619bdb7a44a9ce71a8ff36745d03bd817e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fcc9a835827704303b92b6792f483cedf693ca61567d7da1805d0e763d20c139",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-04-16T12:52:04Z",
    "title_canon_sha256": "068734492b28ba946c8e8e14133294e8c78ccb5ade56f1b06cb811e02fa9de25"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0404331",
    "kind": "arxiv",
    "version": 1
  }
}