Pith Number

pith:FHEB4FFS

pith:2006:FHEB4FFSWHMYJB2SW4YETDUSTC

not attested not anchored not stored refs pending

New age estimates of M31 globular clusters from multi-colour photometry

2), Chinese Academy of Sciences; (2)Graduate University of Chinese Academy of Sciences; (3)Department of Physics & Astronomy, J. Ma (1), R. de Grijs (3), The University of Sheffield), X. Zhou (1) ((1)National Astronomical Observatories, Y. Yang (1), Z. Fan (1

arxiv:astro-ph/0607283 v1 · 2006-07-13 · 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{FHEB4FFSWHMYJB2SW4YETDUSTC}

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	2026-07-04T16:59:07.399406Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

29c81e14b2b1d9848752b730498e9298abcb083524f2a740295bfc60401f649c

Aliases

arxiv: astro-ph/0607283 · arxiv_version: astro-ph/0607283v1 · doi: 10.48550/arxiv.astro-ph/0607283 · pith_short_12: FHEB4FFSWHMY · pith_short_16: FHEB4FFSWHMYJB2S · pith_short_8: FHEB4FFS

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/FHEB4FFSWHMYJB2SW4YETDUSTC \
  | 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: 29c81e14b2b1d9848752b730498e9298abcb083524f2a740295bfc60401f649c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c5531235e9495c60384bc579d0e0ed9e726b16070a374963b7c064061574a3c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-07-13T01:57:47Z",
    "title_canon_sha256": "cccec8fd8003becdd65fa26901afda7e72bd4d42507b87173575d5e54bba8ee0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0607283",
    "kind": "arxiv",
    "version": 1
  }
}