Pith Number

pith:2YNZRWKH

pith:2009:2YNZRWKHUVFPU2T3YPBXS4ZUPC

not attested not anchored not stored refs pending

Non-parametric strong lens inversion of SDSS J1004+4112

H. Dejonghe, J. Liesenborgs, P. Bekaert, S. De Rijcke

arxiv:0904.2382 v1 · 2009-04-15 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2YNZRWKHUVFPU2T3YPBXS4ZUPC}

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	2026-05-18T03:50:37.890602Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d61b98d947a54afa6a7bc3c3797334788042c3e88fe02c58ef3df8024642e27a

Aliases

arxiv: 0904.2382 · arxiv_version: 0904.2382v1 · doi: 10.48550/arxiv.0904.2382 · pith_short_12: 2YNZRWKHUVFP · pith_short_16: 2YNZRWKHUVFPU2T3 · pith_short_8: 2YNZRWKH

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/2YNZRWKHUVFPU2T3YPBXS4ZUPC \
  | 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: d61b98d947a54afa6a7bc3c3797334788042c3e88fe02c58ef3df8024642e27a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a89c172b52e8da4e54edbff5c7cd55b75002e26d58934dd494ef89c8792c9628",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-04-15T19:40:24Z",
    "title_canon_sha256": "abce865ed74da7263fba9342e46efb2ff938465eb140972659acf98f3a58bd59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.2382",
    "kind": "arxiv",
    "version": 1
  }
}