Pith Number

pith:IV7YTOK4

pith:2026:IV7YTOK472KJAEBZOEG2ZWWQFY

not attested not anchored not stored refs pending

The Maximum Initial Mass

Dario Izzo, Giacomo Acciarini

arxiv:2606.29289 v1 · 2026-06-28 · astro-ph.EP · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IV7YTOK472KJAEBZOEG2ZWWQFY}

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	2026-06-30T01:18:00.435225Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

457f89b95cfe94901039710dacdad02e39ce87bc1c65ba9506206371485a98ff

Aliases

arxiv: 2606.29289 · arxiv_version: 2606.29289v1 · doi: 10.48550/arxiv.2606.29289 · pith_short_12: IV7YTOK472KJ · pith_short_16: IV7YTOK472KJAEBZ · pith_short_8: IV7YTOK4

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/IV7YTOK472KJAEBZOEG2ZWWQFY \
  | 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: 457f89b95cfe94901039710dacdad02e39ce87bc1c65ba9506206371485a98ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1fba366cba1603e9fc6b19c86e09f35aefb41ee43211349fef2d94eb8bbb85a6",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2026-06-28T09:26:23Z",
    "title_canon_sha256": "d0a4d2c79e8dd68caf47b3561187e0f57c3debeeebe2028d8912230642a476be"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.29289",
    "kind": "arxiv",
    "version": 1
  }
}