Pith Number

pith:EYZ5WUDL

pith:2004:EYZ5WUDLLGPQMEDKQE22MFBUUM

not attested not anchored not stored refs pending

Tracing the cosmological assembly of stars and supermassive black holes in galaxies

Andrea Merloni, Garching), Gregory Rudnick, Tiziana Di Matteo (MPA

arxiv:astro-ph/0409187 v1 · 2004-09-08 · 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{EYZ5WUDLLGPQMEDKQE22MFBUUM}

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	2026-07-04T16:44:39.376772Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2633db506b599f06106a8135a61434a3372d0f7c3789652ddfb7c2fdbbcd93a4

Aliases

arxiv: astro-ph/0409187 · arxiv_version: astro-ph/0409187v1 · doi: 10.48550/arxiv.astro-ph/0409187 · pith_short_12: EYZ5WUDLLGPQ · pith_short_16: EYZ5WUDLLGPQMEDK · pith_short_8: EYZ5WUDL

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/EYZ5WUDLLGPQMEDKQE22MFBUUM \
  | 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: 2633db506b599f06106a8135a61434a3372d0f7c3789652ddfb7c2fdbbcd93a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "121d9970aa92ba4b271a33cbba8bd2fa061127376a1707e69f4ae7bf31bf1dee",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-09-08T12:40:41Z",
    "title_canon_sha256": "39fb7bbc0e15c91e60632868070cdc8f335b862388feff02e479f1251f8c9661"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0409187",
    "kind": "arxiv",
    "version": 1
  }
}