Pith Number

pith:6NGT2C4T

pith:2003:6NGT2C4TTRYEZTWVY2IL6SCBOG

not attested not anchored not stored refs pending

A multi-beam HI survey of the Virgo Cluster - two isolated HI clouds ?

J. Davies, M. Baes, M. Disney, P. Boyce, Rh. Evans, R. Lang, R. Minchin, R. Smith, S. Linder, S. Roberts, S. Sabatini, V. Kilborn, W. J. G. de Blok, W. van Driel

arxiv:astro-ph/0312531 v1 · 2003-12-19 · 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{6NGT2C4TTRYEZTWVY2IL6SCBOG}

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	2026-07-04T16:38:02.758310Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f34d3d0b939c704cced5c690bf484171af166e4d6bf5e2f516f72fdbac72e359

Aliases

arxiv: astro-ph/0312531 · arxiv_version: astro-ph/0312531v1 · doi: 10.48550/arxiv.astro-ph/0312531 · pith_short_12: 6NGT2C4TTRYE · pith_short_16: 6NGT2C4TTRYEZTWV · pith_short_8: 6NGT2C4T

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/6NGT2C4TTRYEZTWVY2IL6SCBOG \
  | 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: f34d3d0b939c704cced5c690bf484171af166e4d6bf5e2f516f72fdbac72e359

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "49c0d016b1d8a80b7fb6afa1062f5578f65e976c357e85405cfeeb60e43d4033",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-12-19T14:47:44Z",
    "title_canon_sha256": "bcc24aeca993cba690498cc95af035b8be6e80da373b1db1fdfa28a729ec61f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0312531",
    "kind": "arxiv",
    "version": 1
  }
}