Pith Number

pith:4N2PQNLE

pith:2005:4N2PQNLEW3GX6VVPG3QKGTQRLK

not attested not anchored not stored refs pending

The Formation of Primordial Luminous Objects

Emanuele Ripamonti (Kapteyn Institute, Groningen), Stanford), Tom Abel (KIPAC

arxiv:astro-ph/0507130 v1 · 2005-07-06 · 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{4N2PQNLEW3GX6VVPG3QKGTQRLK}

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	2026-05-18T01:40:33.859796Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e374f83564b6cd7f56af36e0a34e115aaa3c59db40243c950919f395eac97c9b

Aliases

arxiv: astro-ph/0507130 · arxiv_version: astro-ph/0507130v1 · doi: 10.48550/arxiv.astro-ph/0507130 · pith_short_12: 4N2PQNLEW3GX · pith_short_16: 4N2PQNLEW3GX6VVP · pith_short_8: 4N2PQNLE

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/4N2PQNLEW3GX6VVPG3QKGTQRLK \
  | 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: e374f83564b6cd7f56af36e0a34e115aaa3c59db40243c950919f395eac97c9b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ffd79e3d2d9937d7b6e0645f4157c4e23060ef6eeb2bd5801d443143f5bd82b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-07-06T12:40:12Z",
    "title_canon_sha256": "0ac41593512f253a15abb22b1c880c4900ebbe3e48677aa1a268fc5cee21ddf2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0507130",
    "kind": "arxiv",
    "version": 1
  }
}