Pith Number

pith:BQONGPQ7

pith:2018:BQONGPQ73WOR4MGJNYYDMRPQC2

not attested not anchored not stored refs pending

Timing the formation and assembly of early-type galaxies via spatially resolved stellar populations analysis

Akin Yildirim, Alexandre Vazdekis, Francesco La Barbera, Glenn van de Ven, Ignacio Martin-Navarro, Jesus Falcon-Barroso

arxiv:1801.05486 v1 · 2018-01-16 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BQONGPQ73WOR4MGJNYYDMRPQC2}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:25:41.127258Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c1cd33e1fdd9d1e30c96e303645f016a9c5999d48874098d2be915d70be3d7b

Aliases

arxiv: 1801.05486 · arxiv_version: 1801.05486v1 · doi: 10.48550/arxiv.1801.05486 · pith_short_12: BQONGPQ73WOR · pith_short_16: BQONGPQ73WOR4MGJ · pith_short_8: BQONGPQ7

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/BQONGPQ73WOR4MGJNYYDMRPQC2 \
  | 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: 0c1cd33e1fdd9d1e30c96e303645f016a9c5999d48874098d2be915d70be3d7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9408928bd4586ab74d2f9f995eb94f293ca48158d6d38d31808947375d4ce8ac",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-01-16T21:26:45Z",
    "title_canon_sha256": "8653444946f6b298f420a47d7724ffd1c6a04ce402e8d738783b04e8460e9b8c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.05486",
    "kind": "arxiv",
    "version": 1
  }
}