Pith Number

pith:BTRAKIA4

pith:2009:BTRAKIA4HEHMTNLLZKKENKP3XG

not attested not anchored not stored refs pending

Chemical evolution of star clusters

Jacco Th. van Loon (Keele University, UK)

arxiv:0911.0792 v1 · 2009-11-04 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BTRAKIA4HEHMTNLLZKKENKP3XG}

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	2026-05-18T02:10:59.706253Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ce205201c390ec9b56bca9446a9fbb9a99f5b39992ecae2af670c7b5c0dca7d

Aliases

arxiv: 0911.0792 · arxiv_version: 0911.0792v1 · doi: 10.48550/arxiv.0911.0792 · pith_short_12: BTRAKIA4HEHM · pith_short_16: BTRAKIA4HEHMTNLL · pith_short_8: BTRAKIA4

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/BTRAKIA4HEHMTNLLZKKENKP3XG \
  | 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: 0ce205201c390ec9b56bca9446a9fbb9a99f5b39992ecae2af670c7b5c0dca7d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9430f5aeef3d40ef6cedcb263ee34b29adeec9aeddbc45a180c334b750cc879d",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-11-04T11:48:56Z",
    "title_canon_sha256": "6c5bd886618e5e44465680242e3bf669e497623148c888f48d19f875a52c3fa4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.0792",
    "kind": "arxiv",
    "version": 1
  }
}