Pith Number

pith:F5VR47DF

pith:2021:F5VR47DFTTZZVC5O5GMFTHUWQ2

not attested not anchored not stored refs pending

Earth's accretion inferred from iron isotopic anomalies of supernova nuclear statistical equilibrium origin

Christoph Burkhardt, Fridolin Spitzer, Nicolas Dauphas, Thorsten Kleine, Timo Hopp

arxiv:2110.06045 v1 · 2021-10-12 · astro-ph.EP · astro-ph.HE · physics.geo-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{F5VR47DFTTZZVC5O5GMFTHUWQ2}

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	2026-07-05T03:32:22.988362Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f6b1e7c659cf39a8baee998599e9686aa26c2ab3152440a0f707cba0dae7c3f

Aliases

arxiv: 2110.06045 · arxiv_version: 2110.06045v1 · doi: 10.48550/arxiv.2110.06045 · pith_short_12: F5VR47DFTTZZ · pith_short_16: F5VR47DFTTZZVC5O · pith_short_8: F5VR47DF

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/F5VR47DFTTZZVC5O5GMFTHUWQ2 \
  | 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: 2f6b1e7c659cf39a8baee998599e9686aa26c2ab3152440a0f707cba0dae7c3f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8552c6497997a2cbd7668eca00c138cd625ea26aa699e355f2c5fd5a3a8c8eb",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "physics.geo-ph"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2021-10-12T14:46:43Z",
    "title_canon_sha256": "56dfa92f87dfd2be9048d275d700396f7b37629d5dcca2be47e740d8b975a5be"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.06045",
    "kind": "arxiv",
    "version": 1
  }
}