Pith Number

pith:5W6SOYY2

pith:2019:5W6SOYY243L7KG2OFX7CBSB6UE

not attested not anchored not stored refs pending

The double Blue Straggler sequence in NGC2173: yes, a field contamination artefact!

B. Lanzoni, E. Dalessandro, F. R. Ferraro, M. Cadelano, N. Bastian, S. Raso

arxiv:1903.01525 v1 · 2019-03-04 · astro-ph.SR · 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{5W6SOYY243L7KG2OFX7CBSB6UE}

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	2026-05-17T23:52:00.399511Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

edbd27631ae6d7f51b4e2dfe20c83ea136a9e966382cb8a5cad17ed5d25bafda

Aliases

arxiv: 1903.01525 · arxiv_version: 1903.01525v1 · doi: 10.48550/arxiv.1903.01525 · pith_short_12: 5W6SOYY243L7 · pith_short_16: 5W6SOYY243L7KG2O · pith_short_8: 5W6SOYY2

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/5W6SOYY243L7KG2OFX7CBSB6UE \
  | 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: edbd27631ae6d7f51b4e2dfe20c83ea136a9e966382cb8a5cad17ed5d25bafda

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "093c100b104ed07046675930e153db5fc32ecdcf4903e01ce8febcadf17c711e",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-03-04T20:21:12Z",
    "title_canon_sha256": "52c722854599da0f232f48695e8533ab18f1f695ba573cd3880b8abfc578ffdd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.01525",
    "kind": "arxiv",
    "version": 1
  }
}