Pith Number

pith:R7HPA55L

pith:2003:R7HPA55LUTX5F7JVEZ3AHVJDQT

not attested not anchored not stored refs pending

HI absorption in a gravitational lens at $z \sim 0.7645$

Australia), F. H. Briggs (2) ((1) Kapteyn Institute, N. Kanekar (1), The Australian National University, The Netherlands (2) RSAA

arxiv:astro-ph/0311021 v1 · 2003-11-03 · 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{R7HPA55LUTX5F7JVEZ3AHVJDQT}

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	2026-07-04T16:37:39.784570Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8fcef077aba4efd2fd35267603d52384e63bf9ffe6169635d309049aa2308742

Aliases

arxiv: astro-ph/0311021 · arxiv_version: astro-ph/0311021v1 · doi: 10.48550/arxiv.astro-ph/0311021 · pith_short_12: R7HPA55LUTX5 · pith_short_16: R7HPA55LUTX5F7JV · pith_short_8: R7HPA55L

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/R7HPA55LUTX5F7JVEZ3AHVJDQT \
  | 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: 8fcef077aba4efd2fd35267603d52384e63bf9ffe6169635d309049aa2308742

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7dceb97ffa3c75aa33cf125cd160acb90eea6655d3e18f202e823e2679ed5c8e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-11-03T08:10:47Z",
    "title_canon_sha256": "102e98baf7f4ccbc982a31c7f7a78266e18c51c4835ee950280792e0c80e264b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0311021",
    "kind": "arxiv",
    "version": 1
  }
}