Pith Number

pith:F45JYDHX

pith:2018:F45JYDHXADKPAGOLIZ7RXDIMNR

not attested not anchored not stored refs pending

The Unified Astronomy Thesaurus: Semantic Metadata for Astronomy and Astrophysics

Alberto Accomazzi, Katie Frey

arxiv:1801.01021 v1 · 2018-01-03 · astro-ph.IM · cs.DL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F45JYDHXADKPAGOLIZ7RXDIMNR}

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	2026-05-18T00:15:28.292759Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f3a9c0cf700d4f019cb467f1b8d0c6c50f46948a134aa9c4fd16bdc3581209e

Aliases

arxiv: 1801.01021 · arxiv_version: 1801.01021v1 · doi: 10.48550/arxiv.1801.01021 · pith_short_12: F45JYDHXADKP · pith_short_16: F45JYDHXADKPAGOL · pith_short_8: F45JYDHX

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/F45JYDHXADKPAGOLIZ7RXDIMNR \
  | 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: 2f3a9c0cf700d4f019cb467f1b8d0c6c50f46948a134aa9c4fd16bdc3581209e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "00a18accbdde497c616699eef687b97d2e0a3dc5ff0ff15533b8153f4e54ac89",
    "cross_cats_sorted": [
      "cs.DL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-01-03T14:37:39Z",
    "title_canon_sha256": "8823ae0cfbaa029b24d9d1fa24999a70251810177125910d76a82a35f242c64b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.01021",
    "kind": "arxiv",
    "version": 1
  }
}