Pith Number

pith:XHRR37K3

pith:2006:XHRR37K37ZX4JPZUVP7RX5LZS3

not attested not anchored not stored refs pending

Unveiling the Cygnus OB2 stellar population with Chandra

E. Flaccomio, F. Damiani, G. Micela, J. F. Albacete Colombo, S. Sciortino

arxiv:astro-ph/0610352 v1 · 2006-10-12 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XHRR37K37ZX4JPZUVP7RX5LZS3}

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	2026-07-04T16:59:31.357721Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b9e31dfd5bfe6fc4bf34abff1bf57996e0e7970d6a8d3cd95eba4298e2a83346

Aliases

arxiv: astro-ph/0610352 · arxiv_version: astro-ph/0610352v1 · doi: 10.48550/arxiv.astro-ph/0610352 · pith_short_12: XHRR37K37ZX4 · pith_short_16: XHRR37K37ZX4JPZU · pith_short_8: XHRR37K3

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/XHRR37K37ZX4JPZUVP7RX5LZS3 \
  | 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: b9e31dfd5bfe6fc4bf34abff1bf57996e0e7970d6a8d3cd95eba4298e2a83346

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4463819bf9d0d9d71bbcbcfe1814359285d2c765a4f510e5a805be1a693fa438",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-10-12T07:46:44Z",
    "title_canon_sha256": "c3c58d613f758b0b0876920e6b5946cd485068e162ebb00909236d7d6ec0a8b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0610352",
    "kind": "arxiv",
    "version": 1
  }
}