Pith Number

pith:SAPEXGFO

pith:2021:SAPEXGFOZ25RCNAETM43O7S4VD

not attested not anchored not stored refs pending

Gravitational waves from the remnants of the first stars in nuclear star clusters

Boyuan Liu, Volker Bromm

arxiv:2106.02244 v2 · 2021-06-04 · 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{SAPEXGFOZ25RCNAETM43O7S4VD}

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	2026-07-05T03:06:29.228203Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

901e4b98aecebb1134049b39b77e5ca8dd239bbfc46c2311ad86a04ddfa8f723

Aliases

arxiv: 2106.02244 · arxiv_version: 2106.02244v2 · doi: 10.48550/arxiv.2106.02244 · pith_short_12: SAPEXGFOZ25R · pith_short_16: SAPEXGFOZ25RCNAE · pith_short_8: SAPEXGFO

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/SAPEXGFOZ25RCNAETM43O7S4VD \
  | 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: 901e4b98aecebb1134049b39b77e5ca8dd239bbfc46c2311ad86a04ddfa8f723

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c258d8587be45fc472a35612b97de9fc7a523401861ab7c05c562a55d0e7b4a",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-06-04T04:19:48Z",
    "title_canon_sha256": "69d7e19cb0f1d0c21edf9d93461cbac80bb743b9574b5f69d6944a286602038c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.02244",
    "kind": "arxiv",
    "version": 2
  }
}