Pith Number

pith:52UMUYCJ

pith:2001:52UMUYCJLP2TYBFJN6WCDT566L

not attested not anchored not stored refs pending

Density waves in the central regions of galaxies

Eric Emsellem

arxiv:astro-ph/0107299 v1 · 2001-07-17 · 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{52UMUYCJLP2TYBFJN6WCDT566L}

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	2026-07-04T14:11:23.051336Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eea8ca60495bf53c04a96fac21cfbef2ee51d5137978c6d5c80f2a925ea6bd03

Aliases

arxiv: astro-ph/0107299 · arxiv_version: astro-ph/0107299v1 · doi: 10.48550/arxiv.astro-ph/0107299 · pith_short_12: 52UMUYCJLP2T · pith_short_16: 52UMUYCJLP2TYBFJ · pith_short_8: 52UMUYCJ

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/52UMUYCJLP2TYBFJN6WCDT566L \
  | 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: eea8ca60495bf53c04a96fac21cfbef2ee51d5137978c6d5c80f2a925ea6bd03

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6a73472d5a6849a445293c1da5bcef91f27ffdbcac3b0ec1829ceec60b3116b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-07-17T08:04:50Z",
    "title_canon_sha256": "96c964ff330585ebd04faf221c97d00fe98b248844a63d215e0f3663069e7445"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0107299",
    "kind": "arxiv",
    "version": 1
  }
}