Pith Number

pith:XTBXOYQ5

pith:2002:XTBXOYQ5GU4EESAC2WXJQ5KEWW

not attested not anchored not stored refs pending

Sub-Milliarcsecond Imaging of Quasars and Active Galactic Nuclei. II. Additional Sources

2), (2) NRAO, (3) Caltech, (4) ASTRON), E. Ros (1), J.A. Zensus (1, K.I. Kellermann (2), M.H. Cohen (3), M. Kadler (1) ((1) MPIfR, R.C. Vermeulen (4)

arxiv:astro-ph/0205076 v1 · 2002-05-06 · 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{XTBXOYQ5GU4EESAC2WXJQ5KEWW}

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	2026-07-04T16:29:58.471101Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bcc377621d3538424802d5ae987544b5a565d8420e8cc749195f80e36dc13c29

Aliases

arxiv: astro-ph/0205076 · arxiv_version: astro-ph/0205076v1 · doi: 10.48550/arxiv.astro-ph/0205076 · pith_short_12: XTBXOYQ5GU4E · pith_short_16: XTBXOYQ5GU4EESAC · pith_short_8: XTBXOYQ5

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/XTBXOYQ5GU4EESAC2WXJQ5KEWW \
  | 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: bcc377621d3538424802d5ae987544b5a565d8420e8cc749195f80e36dc13c29

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b8b7f7277e6f082fe83a69e28ac7c75fb30c7eeedc32d0a45c4ff9f2bd68988",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-05-06T13:50:41Z",
    "title_canon_sha256": "403daf74d0f5ac8738c170ceed2bb9db567bf3c974d1e8794b5e4b810c860ddc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0205076",
    "kind": "arxiv",
    "version": 1
  }
}