Pith Number

pith:ZKAI6Y3F

pith:2012:ZKAI6Y3F7R3TNE4R3ZZ45LM6KR

not attested not anchored not stored refs pending

Age and mass studies for young star clusters in M31 from SEDs-fit

2, (2) Graduate University of Chinese Academy of Sciences, 3), (3) Key Laboratory of Optical Astronomy, Beijing, China, China), Chinese Academy of Sciences, Hu Zou (1), Jun Ma (1, National Astronomical Observatories, Shijingshan District, Song Wang (1, Tianmeng Zhang (1), Xu Zhou (1) ((1) National Astronomical Observatories, Zhenyu Wu (1), Zhou Fan (1)

arxiv:1208.6419 v1 · 2012-08-31 · astro-ph.CO · 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{ZKAI6Y3F7R3TNE4R3ZZ45LM6KR}

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	2026-05-18T01:54:49.164426Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca808f6365fc77369391de73cead9e544c130d9066f473d4085781611f841e85

Aliases

arxiv: 1208.6419 · arxiv_version: 1208.6419v1 · doi: 10.48550/arxiv.1208.6419 · pith_short_12: ZKAI6Y3F7R3T · pith_short_16: ZKAI6Y3F7R3TNE4R · pith_short_8: ZKAI6Y3F

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/ZKAI6Y3F7R3TNE4R3ZZ45LM6KR \
  | 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: ca808f6365fc77369391de73cead9e544c130d9066f473d4085781611f841e85

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc3a991b072a0249cfc2bc5dae056ff4adf6888addb4fecef0b070db5a633400",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-08-31T08:32:07Z",
    "title_canon_sha256": "eaffa13f17a6cfc6e20a97a649a17604658de7238a26ae955cf55ac8d5b32ef5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.6419",
    "kind": "arxiv",
    "version": 1
  }
}