Pith Number

pith:5AXL5CQA

pith:2008:5AXL5CQA62AR3AOZCX2EMV7AWA

not attested not anchored not stored refs pending

Further progress on solar age calibration

Douglas Gough, G\"unter Houdek

arxiv:0812.5044 v1 · 2008-12-30 · astro-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{5AXL5CQA62AR3AOZCX2EMV7AWA}

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	2026-05-18T02:15:03.651286Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e82ebe8a00f6811d81d915f44657e0b025d3aee7cd851cbb8b988afe1591209b

Aliases

arxiv: 0812.5044 · arxiv_version: 0812.5044v1 · doi: 10.48550/arxiv.0812.5044 · pith_short_12: 5AXL5CQA62AR · pith_short_16: 5AXL5CQA62AR3AOZ · pith_short_8: 5AXL5CQA

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/5AXL5CQA62AR3AOZCX2EMV7AWA \
  | 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: e82ebe8a00f6811d81d915f44657e0b025d3aee7cd851cbb8b988afe1591209b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "602c6887b07910acd816b17adba5db6515145fe47b8089a803062a452c0f607c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-12-30T09:56:05Z",
    "title_canon_sha256": "3128021a7faa0bff7984d9e8da647ad15abb86b6dd5668833a7fe9ad7b382ce3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.5044",
    "kind": "arxiv",
    "version": 1
  }
}