Pith Number

pith:UFQ2YHE3

pith:2016:UFQ2YHE3TS46EHZEXLLFA5QQYC

not attested not anchored not stored refs pending

Gamma-ray bursts and Population III stars

Kenji Toma, Sung-Chul Yoon, Volker Bromm

arxiv:1603.04640 v1 · 2016-03-15 · astro-ph.HE · 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{UFQ2YHE3TS46EHZEXLLFA5QQYC}

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	2026-05-18T01:16:13.446551Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a161ac1c9b9cb9e21f24bad6507610c0ba8182748c5803f1867229fc717f8bd7

Aliases

arxiv: 1603.04640 · arxiv_version: 1603.04640v1 · doi: 10.48550/arxiv.1603.04640 · pith_short_12: UFQ2YHE3TS46 · pith_short_16: UFQ2YHE3TS46EHZE · pith_short_8: UFQ2YHE3

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/UFQ2YHE3TS46EHZEXLLFA5QQYC \
  | 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: a161ac1c9b9cb9e21f24bad6507610c0ba8182748c5803f1867229fc717f8bd7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "320ff538c5e3ea1ccf3425755089c91c0ca66644f964c1092154a8a44cea2653",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2016-03-15T11:20:32Z",
    "title_canon_sha256": "e55f70986572e0a156f9d0a5da2e05172269c8bd83adff62d1a5ba79f6e3a9f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.04640",
    "kind": "arxiv",
    "version": 1
  }
}