Pith Number

pith:LSPY6O3L

pith:2001:LSPY6O3LUXFPXQE3CFGO6IBSHD

not attested not anchored not stored refs pending

VLT/Uves Observations of the Dla at Z=3.39 towards QSO 0000-2621

(2) European Southern Observatory, (3) Department of Theoretical Astrophysics, G. Vladilo (1), Ioffe Physico-Technical Institute), M. Centurion (1), P. Bonifacio (1), P. Molaro (1), S. A. Levshakov (3) ((1) Osservatorio Astronomico di Trieste, S. D'odorico (2)

arxiv:astro-ph/0101415 v1 · 2001-01-23 · 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{LSPY6O3LUXFPXQE3CFGO6IBSHD}

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	2026-05-18T01:00:25.067089Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5c9f8f3b6ba5cafbc09b114cef203238ee8c40cabf3c918f442b1688e3383d8a

Aliases

arxiv: astro-ph/0101415 · arxiv_version: astro-ph/0101415v1 · doi: 10.48550/arxiv.astro-ph/0101415 · pith_short_12: LSPY6O3LUXFP · pith_short_16: LSPY6O3LUXFPXQE3 · pith_short_8: LSPY6O3L

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/LSPY6O3LUXFPXQE3CFGO6IBSHD \
  | 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: 5c9f8f3b6ba5cafbc09b114cef203238ee8c40cabf3c918f442b1688e3383d8a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8eaf1f1825c3adda8ea6ef87a3c93ebf4688ea4afc7cb1682d009927a4d696e2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-01-23T16:29:33Z",
    "title_canon_sha256": "7a2599c7dd0107999af27cb243d07d957ff8a739f7f720062d66d392e0ac96ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0101415",
    "kind": "arxiv",
    "version": 1
  }
}