Pith Number

pith:US5ZWE5F

pith:2015:US5ZWE5FBERH3DA56LG44YEWVJ

not attested not anchored not stored refs pending

Probing Massive Stars Around Gamma-Ray Burst Progenitors

George F. Smoot, Pawan Kumar, Wenbin Lu

arxiv:1501.07606 v2 · 2015-01-29 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{US5ZWE5FBERH3DA56LG44YEWVJ}

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	2026-05-18T01:34:45.348419Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4bb9b13a509227d8c1df2cdce6096aa5ecd6499de1db80725be1b3627007b08

Aliases

arxiv: 1501.07606 · arxiv_version: 1501.07606v2 · doi: 10.48550/arxiv.1501.07606 · pith_short_12: US5ZWE5FBERH · pith_short_16: US5ZWE5FBERH3DA5 · pith_short_8: US5ZWE5F

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/US5ZWE5FBERH3DA56LG44YEWVJ \
  | 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: a4bb9b13a509227d8c1df2cdce6096aa5ecd6499de1db80725be1b3627007b08

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "00578daecf98e0afa7d11ac7c118f978e05d8e9effd67b305ac51570f8e241c4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-01-29T21:00:12Z",
    "title_canon_sha256": "c41fc8a95b275a165a012604c4ddc5dfd05ee43b57fa516b0c90aa54a8c78369"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.07606",
    "kind": "arxiv",
    "version": 2
  }
}