Pith Number

pith:75ZBUOQH

pith:2016:75ZBUOQHRNKOTNMESMB4KJ25G4

not attested not anchored not stored refs pending

An Efficient Method for Rare Spectra Retrieval in Astronomical Databases

Ali Luo, Changde Du, Haifeng Yang, Wen Hou, Yanxin Guo

arxiv:1603.04544 v1 · 2016-03-15 · 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{75ZBUOQHRNKOTNMESMB4KJ25G4}

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	2026-05-18T01:18:28.613479Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff721a3a078b54e9b5849303c5275d3721e6c99e3f60923ec7d3f43450987a3c

Aliases

arxiv: 1603.04544 · arxiv_version: 1603.04544v1 · doi: 10.48550/arxiv.1603.04544 · pith_short_12: 75ZBUOQHRNKO · pith_short_16: 75ZBUOQHRNKOTNME · pith_short_8: 75ZBUOQH

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/75ZBUOQHRNKOTNMESMB4KJ25G4 \
  | 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: ff721a3a078b54e9b5849303c5275d3721e6c99e3f60923ec7d3f43450987a3c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c253c08ee46def27079ea4f9108704b0032745e508b654eaa29ec8cec00f22f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-03-15T03:37:03Z",
    "title_canon_sha256": "ad7b72a59e66738a509dedd98a7dab4bb42f4441c9438ea5b2e78892c9095e78"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.04544",
    "kind": "arxiv",
    "version": 1
  }
}