Pith Number

pith:DG4S57A6

pith:2013:DG4S57A6CG4326D3FM5OPVD2NS

not attested not anchored not stored refs pending

The Main Sequence of three Red Supergiant Clusters

Alexander Scholz, Dirk Froebrich

arxiv:1308.6436 v1 · 2013-08-29 · 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{DG4S57A6CG4326D3FM5OPVD2NS}

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	2026-05-18T01:47:56.980434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19b92efc1e11b9bd787b2b3ae7d47a6c9e9b3eede2f01913b1c4e44e5170127a

Aliases

arxiv: 1308.6436 · arxiv_version: 1308.6436v1 · doi: 10.48550/arxiv.1308.6436 · pith_short_12: DG4S57A6CG43 · pith_short_16: DG4S57A6CG4326D3 · pith_short_8: DG4S57A6

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/DG4S57A6CG4326D3FM5OPVD2NS \
  | 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: 19b92efc1e11b9bd787b2b3ae7d47a6c9e9b3eede2f01913b1c4e44e5170127a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6e0ddf919536faa414b1aed315ced7c265648456ce016512dd011492619cfd67",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-08-29T11:32:26Z",
    "title_canon_sha256": "3eb110af265344dede2903cfdfbdabb9ada21f60b9970e9fa321257fc91d3b63"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.6436",
    "kind": "arxiv",
    "version": 1
  }
}