Pith Number

pith:ATRRFNTM

pith:2010:ATRRFNTMVHPHPN74YYDGXA5FPU

not attested not anchored not stored refs pending

Spectral energy distributions and age estimates of 104 M31 globular clusters

2, 3), 5), Astronomy, Astrophysics, Chinese Academy of Sciences; (2) Graduate University, Chinese Academy of Sciences; (3) Key Laboratory of Optical Astronomy, Chinese Academy of Sciences; (4) Kavli Institute for Astronomy, Jun Ma (1, National Astronomical Observatories, Peking University; (5) Department of Physics, Richard de Grijs (4, Song Wang (1, University of Sheffield), Xu Zhou (1) ((1) National Astronomical Observatories, Zhou Fan (1)

arxiv:1001.3939 v1 · 2010-01-22 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ATRRFNTMVHPHPN74YYDGXA5FPU}

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	2026-05-18T02:09:31.240951Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

04e312b66ca9de77b7fcc6066b83a57d36443489e550ca8d224653c864b51965

Aliases

arxiv: 1001.3939 · arxiv_version: 1001.3939v1 · doi: 10.48550/arxiv.1001.3939 · pith_short_12: ATRRFNTMVHPH · pith_short_16: ATRRFNTMVHPHPN74 · pith_short_8: ATRRFNTM

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/ATRRFNTMVHPHPN74YYDGXA5FPU \
  | 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: 04e312b66ca9de77b7fcc6066b83a57d36443489e550ca8d224653c864b51965

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03851e70272f9acf5d1921c3a80ef72ee49731ee747fcea1fd53484d01d129a7",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-01-22T08:42:05Z",
    "title_canon_sha256": "856846e93b9b23e1b1f93ba351249e7e066d80d55f49f291c6865af29ee16970"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.3939",
    "kind": "arxiv",
    "version": 1
  }
}