Pith Number

pith:KQWYQEQ2

pith:2026:KQWYQEQ2OM3C4FKLYZ5XDNIJT5

not attested not anchored not stored refs pending

Improved Big Bang Nucleosynthesis constraints on decaying massive relics

Jonas Frerick, Kai Schmidt-Hoberg, Marco Hufnagel, Sara Bianco

arxiv:2605.26824 v1 · 2026-05-26 · hep-ph · 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{KQWYQEQ2OM3C4FKLYZ5XDNIJT5}

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	2026-05-27T01:06:14.449763Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

542d88121a73362e154bc67b71b5099f517c7cf35f2973a856bd20668dcb7ece

Aliases

arxiv: 2605.26824 · arxiv_version: 2605.26824v1 · doi: 10.48550/arxiv.2605.26824 · pith_short_12: KQWYQEQ2OM3C · pith_short_16: KQWYQEQ2OM3C4FKL · pith_short_8: KQWYQEQ2

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/KQWYQEQ2OM3C4FKLYZ5XDNIJT5 \
  | 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: 542d88121a73362e154bc67b71b5099f517c7cf35f2973a856bd20668dcb7ece

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "087bf8767a96e5d05cb5eb47620a01fecf66fb8b5750117d34c917ebe6b87308",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2026-05-26T10:41:51Z",
    "title_canon_sha256": "677105fff4c63d46c0a57e3958406418412303fa171837a0ad891b4b288cb07b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.26824",
    "kind": "arxiv",
    "version": 1
  }
}