Pith Number

pith:YU63X5CG

pith:2018:YU63X5CGRC7MFETMZ3UZMKV5KM

not attested not anchored not stored refs pending

Star formation history of the Galactic bulge from deep HST imaging of low reddening windows

Annalisa Calamida, Edouard J. Bernard, Mathias Schultheis, Misha Haywood, Paola Di Matteo, Vanessa Hill

arxiv:1801.01426 v2 · 2018-01-04 · 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{YU63X5CGRC7MFETMZ3UZMKV5KM}

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	2026-05-18T00:17:07.967300Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c53dbbf44688bec2926ccee9962abd530100751e20bb8f47b14399ec1c598f3b

Aliases

arxiv: 1801.01426 · arxiv_version: 1801.01426v2 · doi: 10.48550/arxiv.1801.01426 · pith_short_12: YU63X5CGRC7M · pith_short_16: YU63X5CGRC7MFETM · pith_short_8: YU63X5CG

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/YU63X5CGRC7MFETMZ3UZMKV5KM \
  | 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: c53dbbf44688bec2926ccee9962abd530100751e20bb8f47b14399ec1c598f3b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28b443c89a7bb71fd6606aa55d1b7f74a6cc51e7f0f170011936aae88e6a3b92",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-01-04T16:37:06Z",
    "title_canon_sha256": "2bd7a3a6eea970ff03a03786d1172957bc93d2114bec72c0c4ec7fde011b5821"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.01426",
    "kind": "arxiv",
    "version": 2
  }
}