Pith Number

pith:HQQD3CXG

pith:2012:HQQD3CXGJ6FCQBM6ULP4CGPKSX

not attested not anchored not stored refs pending

High Contrast Imaging of the Close Environment of HD 142527 -

A.-M. Lagrange, G. Chauvin, J. H. Girard, J. Milli, J. Rameau, M. Bonnefoy, P. Thebault

arxiv:1208.4557 v1 · 2012-08-22 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HQQD3CXGJ6FCQBM6ULP4CGPKSX}

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	2026-05-18T01:54:59.539978Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c203d8ae64f8a28059ea2dfc119ea95eed7d2484d0708d5ccf152688cae53dd

Aliases

arxiv: 1208.4557 · arxiv_version: 1208.4557v1 · doi: 10.48550/arxiv.1208.4557 · pith_short_12: HQQD3CXGJ6FC · pith_short_16: HQQD3CXGJ6FCQBM6 · pith_short_8: HQQD3CXG

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/HQQD3CXGJ6FCQBM6ULP4CGPKSX \
  | 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: 3c203d8ae64f8a28059ea2dfc119ea95eed7d2484d0708d5ccf152688cae53dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3ae456888bd4f0500c8e49e72d3bc56fc5db4bcf59e61a42ff23bcae684a76b5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2012-08-22T17:02:33Z",
    "title_canon_sha256": "3da05fd1ac4d505a436f3eb44fc5ec1e11d7c0d3185618c11516fa9a8bcb654f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.4557",
    "kind": "arxiv",
    "version": 1
  }
}