Pith Number

pith:QQKDLMYO

pith:1996:QQKDLMYORGH3BUQJXVDUTEUETS

not attested not anchored not stored refs pending

The published extended rotation curves of spiral galaxies: Confrontation with Modified Dynamics

Groningen, R.H. Sanders (Kapteyn Institute, the Netherlands)

arxiv:astro-ph/9606089 v1 · 1996-06-14 · 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{QQKDLMYORGH3BUQJXVDUTEUETS}

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	2026-07-04T16:00:09.406732Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

841435b30e898fb0d209bd474992849c99bf56eacf82a82dcfe567fd1f6ee89e

Aliases

arxiv: astro-ph/9606089 · arxiv_version: astro-ph/9606089v1 · doi: 10.48550/arxiv.astro-ph/9606089 · pith_short_12: QQKDLMYORGH3 · pith_short_16: QQKDLMYORGH3BUQJ · pith_short_8: QQKDLMYO

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/QQKDLMYORGH3BUQJXVDUTEUETS \
  | 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: 841435b30e898fb0d209bd474992849c99bf56eacf82a82dcfe567fd1f6ee89e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fd4c1c106fcd8f10bf0a1a77f0f7496d2a643f32209397fe1ccf42c1e9537173",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1996-06-14T12:46:40Z",
    "title_canon_sha256": "7bb86fef633bbadba7544ef49882663552f5aa2ac994e245cc930de8bb75e6ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9606089",
    "kind": "arxiv",
    "version": 1
  }
}