Pith Number

pith:KJKAK4KW

pith:2010:KJKAK4KWIUADZEPMOKQ334IWPU

not attested not anchored not stored refs pending

The eclipsing, double-lined, Of supergiant binary Cyg OB2-B17

A. J. Norton, F. Vilardell, I. Negueruela, J. S. Clark, P. Roche, V. E. Stroud

arxiv:1002.0707 v1 · 2010-02-03 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KJKAK4KWIUADZEPMOKQ334IWPU}

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	2026-05-18T02:09:20.427737Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

525405715645003c91ec72a1bdf1167d068a4e1d365e6e4f5e6a602bfdbb8bdf

Aliases

arxiv: 1002.0707 · arxiv_version: 1002.0707v1 · doi: 10.48550/arxiv.1002.0707 · pith_short_12: KJKAK4KWIUAD · pith_short_16: KJKAK4KWIUADZEPM · pith_short_8: KJKAK4KW

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/KJKAK4KWIUADZEPMOKQ334IWPU \
  | 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: 525405715645003c91ec72a1bdf1167d068a4e1d365e6e4f5e6a602bfdbb8bdf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d5fbadc8001c5ff3b6eaf7e06f4bcf370ec6f047a77e1c784c2d290124d9fda6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2010-02-03T11:09:53Z",
    "title_canon_sha256": "1f31f6d18780d9f4def1c753970619c63d66ad5dd45ace51f7d1e31048716477"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.0707",
    "kind": "arxiv",
    "version": 1
  }
}