Pith Number

pith:PJIFWIRT

pith:1998:PJIFWIRTYEZH3EHNVQCDU67WGS

not attested not anchored not stored refs pending

Dynamics of blue compact galaxies, as revealed by their H-alpha velocity fields I. The data, velocity fields and rotation curves

G. \"Ostlin, J. Boulesteix, J. Masegosa, N. Bergvall, P. Amram

arxiv:astro-ph/9812281 v2 · 1998-12-15 · 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{PJIFWIRTYEZH3EHNVQCDU67WGS}

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	2026-05-18T01:07:36.751968Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a505b2233c1327d90edac043a7bf634a617cba6800e11555133ee5af4b06aef

Aliases

arxiv: astro-ph/9812281 · arxiv_version: astro-ph/9812281v2 · doi: 10.48550/arxiv.astro-ph/9812281 · pith_short_12: PJIFWIRTYEZH · pith_short_16: PJIFWIRTYEZH3EHN · pith_short_8: PJIFWIRT

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/PJIFWIRTYEZH3EHNVQCDU67WGS \
  | 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: 7a505b2233c1327d90edac043a7bf634a617cba6800e11555133ee5af4b06aef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da197bbf94d429664d2f76ffd704f75c3d186a7f589a20c47948d282ae0191e8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-12-15T17:03:06Z",
    "title_canon_sha256": "98eba2ebb9b24a4a2582e07c4e1753877cea204b3c45e73c7459daebde6dc1c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9812281",
    "kind": "arxiv",
    "version": 2
  }
}