Pith Number

pith:QXTZMXHJ

pith:2026:QXTZMXHJSCHXKOANUV2X7TRCHS

not attested not anchored not stored refs pending

The swallowed spike: the formation of light primordial black hole structures around heavy seeds

Agnese Tolino, Bradley J. Kavanagh, Daniele Gaggero, Francesca Scarcella, Valentina De Romeri

arxiv:2606.25031 v1 · 2026-06-23 · astro-ph.CO · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QXTZMXHJSCHXKOANUV2X7TRCHS}

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	2026-06-25T00:18:15.341084Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85e7965ce9908f75380da5757fce223c8ad740ba55b0683cfd3d6b3f9bb7e849

Aliases

arxiv: 2606.25031 · arxiv_version: 2606.25031v1 · doi: 10.48550/arxiv.2606.25031 · pith_short_12: QXTZMXHJSCHX · pith_short_16: QXTZMXHJSCHXKOAN · pith_short_8: QXTZMXHJ

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/QXTZMXHJSCHXKOANUV2X7TRCHS \
  | 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: 85e7965ce9908f75380da5757fce223c8ad740ba55b0683cfd3d6b3f9bb7e849

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "66574777b514fc1f420bf64de3f74a2ecd0b106ddcf0f0bfcc7ee6ca97203cef",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2026-06-23T18:00:05Z",
    "title_canon_sha256": "27d7800dd935fcac0e9b64c738316ea23e3bf9d1fa164541f5e75ce09281ce68"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.25031",
    "kind": "arxiv",
    "version": 1
  }
}