Pith Number

pith:HK3NHWWT

pith:1999:HK3NHWWTYDEBLLYZL56WGEY4VC

not attested not anchored not stored refs pending

BUSCA: A Telescope Instrumentation for Simultaneous Imaging in 4 Optical Bands

2), (2) Astrophysical Institute Potsdam, (3) Univ. of Erlangen, 4), (4) GRANTECAN Tenerife), G Klink (1), H Poschmann (1), J. Schmoll (1, K. Bagschik (1), K. Reif (1), K.S. de Boer (1), Ph. Mueller (1), R Kohley (1, U. Heber (3), U. Mebold (1) ((1) Univ. of Bonn

arxiv:astro-ph/9903177 v1 · 1999-03-11 · 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{HK3NHWWTYDEBLLYZL56WGEY4VC}

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	2026-05-18T01:40:13.341793Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ab6d3dad3c0c815af195f7d63131ca8a1cda682cda10fb590603c2720d604e1

Aliases

arxiv: astro-ph/9903177 · arxiv_version: astro-ph/9903177v1 · doi: 10.48550/arxiv.astro-ph/9903177 · pith_short_12: HK3NHWWTYDEB · pith_short_16: HK3NHWWTYDEBLLYZ · pith_short_8: HK3NHWWT

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/HK3NHWWTYDEBLLYZL56WGEY4VC \
  | 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: 3ab6d3dad3c0c815af195f7d63131ca8a1cda682cda10fb590603c2720d604e1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "747ff76f0d2644265c9dbf5e322c199f65b4be0af3be6f58d97163c0a057c2e8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-03-11T14:22:43Z",
    "title_canon_sha256": "f42d4de01b464c7a20407c2971c1baf8616a38068e22c4fa4124f7bba3b2cfe4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9903177",
    "kind": "arxiv",
    "version": 1
  }
}