Pith Number

pith:L3XVLJIW

pith:2018:L3XVLJIWGCEEYQ2G2LLNMXKI2R

not attested not anchored not stored refs pending

Rise of the First Super-Massive Stars

John A. Regan (Dublin City University), Turlough P. Downes (Dublin City University)

arxiv:1803.04527 v2 · 2018-03-12 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L3XVLJIWGCEEYQ2G2LLNMXKI2R}

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	2026-05-18T00:15:15.448239Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5eef55a51630884c4346d2d6d65d48d44bfe1d1beeddc363e928d63d3b324ec3

Aliases

arxiv: 1803.04527 · arxiv_version: 1803.04527v2 · doi: 10.48550/arxiv.1803.04527 · pith_short_12: L3XVLJIWGCEE · pith_short_16: L3XVLJIWGCEEYQ2G · pith_short_8: L3XVLJIW

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/L3XVLJIWGCEEYQ2G2LLNMXKI2R \
  | 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: 5eef55a51630884c4346d2d6d65d48d44bfe1d1beeddc363e928d63d3b324ec3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8850455ce1263ee2b2b21ac8a17581647bfd1d7c0ffea49c0f112668c1034d0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-03-12T20:53:01Z",
    "title_canon_sha256": "1b0d08b1a622879e0f8bbaf22db9a566cf8160ab7d1ecce66b7e3ff28e7d10e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.04527",
    "kind": "arxiv",
    "version": 2
  }
}