Pith Number

pith:VC27VMHI

pith:2001:VC27VMHIT5ZGGXW6PEHW3HA5AR

not attested not anchored not stored refs pending

HST Observations of the Nuclear Regions of the Toomre Sequence of Merging Galaxies

A. I. Zabludoff, J. C. Mihos, J. E. Hibbard, R. P. van der Marel, S. Laine, T. Boeker

arxiv:astro-ph/0106396 v1 · 2001-06-21 · 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{VC27VMHIT5ZGGXW6PEHW3HA5AR}

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	2026-07-04T14:11:19.770390Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8b5fab0e89f72635ede790f6d9c1d0445846ec7e4f6730631de1c42450f7448

Aliases

arxiv: astro-ph/0106396 · arxiv_version: astro-ph/0106396v1 · doi: 10.48550/arxiv.astro-ph/0106396 · pith_short_12: VC27VMHIT5ZG · pith_short_16: VC27VMHIT5ZGGXW6 · pith_short_8: VC27VMHI

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/VC27VMHIT5ZGGXW6PEHW3HA5AR \
  | 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: a8b5fab0e89f72635ede790f6d9c1d0445846ec7e4f6730631de1c42450f7448

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d576f48765c70dee5c2e08fce26f6d0eab8dff06ee34acc7cd06cfe06f8e6624",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-06-21T21:22:56Z",
    "title_canon_sha256": "c77aa8515823ac129ffbca2dd208bae79c159ca52d99af97d1d4787d422a1709"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0106396",
    "kind": "arxiv",
    "version": 1
  }
}