Pith Number

pith:QWR5HW7V

pith:2007:QWR5HW7V5K7GN4FDHBXF56GLLT

not attested not anchored not stored refs pending

Recalibration of Data in the VDFS Science Archives

Eckhard Sutorius, Mike Read, Nicholas Cross, Nigel Hambly, Ross Collins

arxiv:0711.0180 v1 · 2007-11-01 · 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{QWR5HW7V5K7GN4FDHBXF56GLLT}

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	2026-07-04T15:05:20.749831Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85a3d3dbf5eabe66f0a3386e5ef8cb5cf4627803266a11f0bc22bbda46fa0c16

Aliases

arxiv: 0711.0180 · arxiv_version: 0711.0180v1 · doi: 10.48550/arxiv.0711.0180 · pith_short_12: QWR5HW7V5K7G · pith_short_16: QWR5HW7V5K7GN4FD · pith_short_8: QWR5HW7V

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/QWR5HW7V5K7GN4FDHBXF56GLLT \
  | 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: 85a3d3dbf5eabe66f0a3386e5ef8cb5cf4627803266a11f0bc22bbda46fa0c16

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "38a7a5678239c532536ee196f1f49723708b413f884863199d40a84b20432b2b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-11-01T18:21:31Z",
    "title_canon_sha256": "40bb33cc219220f36170a15d18d797df0d8f16eec273467ffb55e02374cf4f73"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0711.0180",
    "kind": "arxiv",
    "version": 1
  }
}