Pith Number

pith:J55WZGHQ

pith:2009:J55WZGHQXOZVWUCF2WTP42BAKG

not attested not anchored not stored refs pending

A binary engine fuelling HD87643' s complex circumstellar environment, using AMBER/VLTI

A. C. Carciofi, Anthony Meilland (MPIFR), Armando Domiciano De Souza (FIZEAU), C. Benoist (CASSIOPEE), E. Thi\'ebaut (CRAL), Fabien Baron, Farrokh Vakili (FIZEAU), Florentin Millour (MPIFR), Gerd Weigelt (MPIFR), Gilbert Mars (FRESNEL), John R. Young, K.-H. Hofmann (MPIFR), L. B. F. M. Waters (AI PANNEKOEK), Marcelo Borges Fernandes (FIZEAU), Olivier Chesneau (FIZEAU), Philippe Bendjoya (FIZEAU), Philippe Stee (FIZEAU), Pierre Kervella (LESIA), R. G. Petrov (FIZEAU), Slobodan Jankov (FIZEAU), Sylvie Robbe-Dubois (FIZEAU), Thomas Driebe (MPIFR)

arxiv:0908.0227 v2 · 2009-08-03 · 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{J55WZGHQXOZVWUCF2WTP42BAKG}

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	2026-05-18T02:12:45.276943Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4f7b6c98f0bbb35b5045d5a6fe68205195d95e60ef1b2b85563a7fd78f9c1746

Aliases

arxiv: 0908.0227 · arxiv_version: 0908.0227v2 · doi: 10.48550/arxiv.0908.0227 · pith_short_12: J55WZGHQXOZV · pith_short_16: J55WZGHQXOZVWUCF · pith_short_8: J55WZGHQ

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/J55WZGHQXOZVWUCF2WTP42BAKG \
  | 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: 4f7b6c98f0bbb35b5045d5a6fe68205195d95e60ef1b2b85563a7fd78f9c1746

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "869e75de6eca9f78cb7323c7d813e1952c8709d1462c414b5d78c4da8cbae2a0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-08-03T11:20:08Z",
    "title_canon_sha256": "1e0f56fa2daea12637c2f51db09f13af0fbce3d693bac8eb717c1e261aab2b57"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.0227",
    "kind": "arxiv",
    "version": 2
  }
}