Pith Number

pith:NABTNQFS

pith:2017:NABTNQFSLGF7UQZN7XTSTSY7AD

not attested not anchored not stored refs pending

An atomic hydrogen bridge fueling NGC 4418 with gas from VV 655

E. Varenius, F. Costagliola, H.-R. Kl\"ockner, H. Spoon, I. Mart\'i-Vidal, J. E. Conway, S. Aalto

arxiv:1705.00991 v1 · 2017-05-02 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NABTNQFSLGF7UQZN7XTSTSY7AD}

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	2026-05-18T00:31:07.008787Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

680336c0b2598bfa432dfde729cb1f00e1593dc48fcc0fc39825a0d4495ed268

Aliases

arxiv: 1705.00991 · arxiv_version: 1705.00991v1 · doi: 10.48550/arxiv.1705.00991 · pith_short_12: NABTNQFSLGF7 · pith_short_16: NABTNQFSLGF7UQZN · pith_short_8: NABTNQFS

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/NABTNQFSLGF7UQZN7XTSTSY7AD \
  | 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: 680336c0b2598bfa432dfde729cb1f00e1593dc48fcc0fc39825a0d4495ed268

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7e50ab9bf0298d2977eadc0505cb739740a1e91ee916ff16d25eee1c38a9a12f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-05-02T14:24:00Z",
    "title_canon_sha256": "b517895de7a131738a939f2005d2b904265ea1d718fd10c226178cdc52c720b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.00991",
    "kind": "arxiv",
    "version": 1
  }
}