Pith Number

pith:J3FKDMYB

pith:2009:J3FKDMYBHTZB7HKY6CZ47X4CT4

not attested not anchored not stored refs pending

HI content and star formation in the interacting galaxy Arp86

Chandreyee Sengupta, D. J. Saikia, K. S. Dwarakanath

arxiv:0904.4908 v1 · 2009-04-30 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{J3FKDMYBHTZB7HKY6CZ47X4CT4}

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	2026-05-18T02:13:48.686160Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4ecaa1b3013cf21f9d58f0b3cfdf829f339bd6c8d2158c567dd5ebb801babfd7

Aliases

arxiv: 0904.4908 · arxiv_version: 0904.4908v1 · doi: 10.48550/arxiv.0904.4908 · pith_short_12: J3FKDMYBHTZB · pith_short_16: J3FKDMYBHTZB7HKY · pith_short_8: J3FKDMYB

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/J3FKDMYBHTZB7HKY6CZ47X4CT4 \
  | 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: 4ecaa1b3013cf21f9d58f0b3cfdf829f339bd6c8d2158c567dd5ebb801babfd7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "865d58c9611f98ae59a4ef02194698e64f389d587b44661b0f0d995b4c25172f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-04-30T18:25:27Z",
    "title_canon_sha256": "77587729e1cb3e7110fc7bc22891a9eb997e5ab1ec5c95fcc8ed7c6b37dbe3bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.4908",
    "kind": "arxiv",
    "version": 1
  }
}