Pith Number

pith:ZL64JELC

pith:2005:ZL64JELCU43G2EKHYBOUD4KJWY

not attested not anchored not stored refs pending

Sensitive VLBI Observations of the z = 4.7 QSO BRI 1202-0725

A. O. Petric, C. L. Carilli, E. Momjian

arxiv:astro-ph/0501134 v1 · 2005-01-07 · 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{ZL64JELCU43G2EKHYBOUD4KJWY}

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	2026-07-04T16:50:34.790422Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cafdc49162a7366d1147c05d41f149b63a8fec690f4d46d7be1b75299e709180

Aliases

arxiv: astro-ph/0501134 · arxiv_version: astro-ph/0501134v1 · doi: 10.48550/arxiv.astro-ph/0501134 · pith_short_12: ZL64JELCU43G · pith_short_16: ZL64JELCU43G2EKH · pith_short_8: ZL64JELC

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/ZL64JELCU43G2EKHYBOUD4KJWY \
  | 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: cafdc49162a7366d1147c05d41f149b63a8fec690f4d46d7be1b75299e709180

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c672c128d092bd1c0f2ef8b46797588067c1d8bb6109dcb7d5636bc7ef8b022",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-01-07T22:49:47Z",
    "title_canon_sha256": "a84c112c6dcc6090f3696cf86aad1925c9d760daf6bc85325c6163ba0b9bfcc9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0501134",
    "kind": "arxiv",
    "version": 1
  }
}