Pith Number

pith:7JTJIYC2

pith:2012:7JTJIYC2NBWIQAASEDKOSGSJ4Y

not attested not anchored not stored refs pending

A Study on the Chemical Properties of Blue Compact Dwarf Galaxies

Qiusheng Gu (NJU), Yinghe Zhao (PMO), Yu Gao (PMO)

arxiv:1212.5159 v1 · 2012-12-20 · 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{7JTJIYC2NBWIQAASEDKOSGSJ4Y}

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	2026-05-18T03:35:27.723507Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa6694605a686c88001220d4e91a49e610bb2a5d7845c13448db66cbef6a5be3

Aliases

arxiv: 1212.5159 · arxiv_version: 1212.5159v1 · doi: 10.48550/arxiv.1212.5159 · pith_short_12: 7JTJIYC2NBWI · pith_short_16: 7JTJIYC2NBWIQAAS · pith_short_8: 7JTJIYC2

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/7JTJIYC2NBWIQAASEDKOSGSJ4Y \
  | 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: fa6694605a686c88001220d4e91a49e610bb2a5d7845c13448db66cbef6a5be3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7cc39ed5af16783807c9552650f2432f9cea12a2e195c349e35ada2154a5f3ec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-12-20T17:42:11Z",
    "title_canon_sha256": "a1faa216a0490772204b5543898a74e6134f90b7fe343686fe7fdbc9744276cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.5159",
    "kind": "arxiv",
    "version": 1
  }
}