Pith Number

pith:3EJY7UHK

pith:2020:3EJY7UHKET6VFUC6TOVJDGDUCJ

not attested not anchored not stored refs pending

When did Population III star formation end?

Boyuan Liu, Volker Bromm

arxiv:2006.15260 v2 · 2020-06-27 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3EJY7UHKET6VFUC6TOVJDGDUCJ}

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	2026-07-05T01:22:49.266408Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d9138fd0ea24fd52d05e9baa919874124d2eb476170e8437392498945c7ad891

Aliases

arxiv: 2006.15260 · arxiv_version: 2006.15260v2 · doi: 10.48550/arxiv.2006.15260 · pith_short_12: 3EJY7UHKET6V · pith_short_16: 3EJY7UHKET6VFUC6 · pith_short_8: 3EJY7UHK

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/3EJY7UHKET6VFUC6TOVJDGDUCJ \
  | 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: d9138fd0ea24fd52d05e9baa919874124d2eb476170e8437392498945c7ad891

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cd391302942247847d6377dd4d06d6e59a0bb74b57767a8fe02d2b4e4ec693cb",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-06-27T02:30:46Z",
    "title_canon_sha256": "693ce689d5e306cb308121957b3c707a0be5951c7df159ac25f5a56ec3de1ffa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2006.15260",
    "kind": "arxiv",
    "version": 2
  }
}