Pith Number

pith:B6FN67KC

pith:2026:B6FN67KC3UYGQB2FP46UGGYCIG

not attested not anchored not stored refs pending

Nitrogen rises to the top: evidence of enhanced mixing in very massive stars

Pablo Marchant, Tomer Shenar

arxiv:2607.06828 v1 · 2026-07-07 · astro-ph.SR · 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{B6FN67KC3UYGQB2FP46UGGYCIG}

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	2026-07-09T00:19:29.916327Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f8adf7d42dd306807457f3d431b0241b503b9f41c476e7ca6efe3a5780dba8a

Aliases

arxiv: 2607.06828 · arxiv_version: 2607.06828v1 · doi: 10.48550/arxiv.2607.06828 · pith_short_12: B6FN67KC3UYG · pith_short_16: B6FN67KC3UYGQB2F · pith_short_8: B6FN67KC

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/B6FN67KC3UYGQB2FP46UGGYCIG \
  | 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: 0f8adf7d42dd306807457f3d431b0241b503b9f41c476e7ca6efe3a5780dba8a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b83dcb068326c6bf9c53348facfa4d264df3cacf2f1f45d6ac5141c07a1905f5",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2026-07-07T21:49:49Z",
    "title_canon_sha256": "7bb384a898d0bfe385255f370e7c9a7b753f781334e95b46623b4c150bb72b37"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.06828",
    "kind": "arxiv",
    "version": 1
  }
}