Pith Number

pith:P2YMI3DK

pith:2008:P2YMI3DKFK26EEYKV735U7GF7M

not attested not anchored not stored refs pending

The age of the Galaxy's thick disk

(2) European Southern Observatory, Chile), S. Feltzing (1), Sweden, T. Bensby (2) ((1) Lund Observatory

arxiv:0811.2445 v1 · 2008-11-17 · 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{P2YMI3DKFK26EEYKV735U7GF7M}

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	2026-05-18T02:15:21.000807Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7eb0c46c6a2ab5e2130aaff7da7cc5fb22a38cc9abd5f0fb5f9a42fdf0bd5f6d

Aliases

arxiv: 0811.2445 · arxiv_version: 0811.2445v1 · doi: 10.48550/arxiv.0811.2445 · pith_short_12: P2YMI3DKFK26 · pith_short_16: P2YMI3DKFK26EEYK · pith_short_8: P2YMI3DK

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/P2YMI3DKFK26EEYKV735U7GF7M \
  | 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: 7eb0c46c6a2ab5e2130aaff7da7cc5fb22a38cc9abd5f0fb5f9a42fdf0bd5f6d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f09ee2cc701df2c07f43ac0fd71452f4a5787d8d49fb9b168c07b274192e3ce1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-11-17T15:46:13Z",
    "title_canon_sha256": "97f2260339b3fb6f97f291ce1441565fa82db48ae9faa80107f221a253cf0f90"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0811.2445",
    "kind": "arxiv",
    "version": 1
  }
}