Pith Number

pith:YK7ISVKG

pith:2011:YK7ISVKG54GGVBHNZESK3FT6Q6

not attested not anchored not stored refs pending

Spectroscopic Study of Globular Clusters in the Halo of M31 with Xinglong 2.16m Telescope

Hong Wu, Jin-Zeng Li, Jun Ma, Tian-Meng Zhang, Xu Zhou, Ya-Fang Huang, Yong-Heng Zhao, Zhou Fan

arxiv:1108.2121 v1 · 2011-08-10 · 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{YK7ISVKG54GGVBHNZESK3FT6Q6}

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	2026-05-18T02:00:59.395826Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c2be895546ef0c6a84edc924ad967e879071c933ee951a0c1678e68c6cd89ef6

Aliases

arxiv: 1108.2121 · arxiv_version: 1108.2121v1 · doi: 10.48550/arxiv.1108.2121 · pith_short_12: YK7ISVKG54GG · pith_short_16: YK7ISVKG54GGVBHN · pith_short_8: YK7ISVKG

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/YK7ISVKG54GGVBHNZESK3FT6Q6 \
  | 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: c2be895546ef0c6a84edc924ad967e879071c933ee951a0c1678e68c6cd89ef6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51de4ce51e572a426ce11b52d2c422573ac97d458cee57fecb1c1b1a6f3d4f82",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-08-10T08:20:53Z",
    "title_canon_sha256": "c8dfc2f2a352112e7e127d73b90ac0d8c1bc15f6b2ad0c3ddc0443c253b61642"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.2121",
    "kind": "arxiv",
    "version": 1
  }
}