Pith Number

pith:2ACEAJYQ

pith:2004:2ACEAJYQ6YIPUU6NODLOODBLEL

not attested not anchored not stored refs pending

On the evolution of star forming galaxies

A. M. Hopkins (University of Pittsburgh)

arxiv:astro-ph/0407170 v1 · 2004-07-08 · 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{2ACEAJYQ6YIPUU6NODLOODBLEL}

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	2026-07-04T15:20:14.403434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d004402710f610fa53cd70d6e70c2b22e15653aaf9e0891d8bf000686e5d1629

Aliases

arxiv: astro-ph/0407170 · arxiv_version: astro-ph/0407170v1 · doi: 10.48550/arxiv.astro-ph/0407170 · pith_short_12: 2ACEAJYQ6YIP · pith_short_16: 2ACEAJYQ6YIPUU6N · pith_short_8: 2ACEAJYQ

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/2ACEAJYQ6YIPUU6NODLOODBLEL \
  | 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: d004402710f610fa53cd70d6e70c2b22e15653aaf9e0891d8bf000686e5d1629

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d6e06535fbdabf72dcc3f3f79f6a17c8189878bfe874fbf88570506e199e844f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-07-08T15:55:12Z",
    "title_canon_sha256": "4400baea4fea04123a6b4b01a8f07b366643dfb6b121b990479877e9b01e822a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0407170",
    "kind": "arxiv",
    "version": 1
  }
}