Pith Number

pith:VHU4ZLMQ

pith:2009:VHU4ZLMQJU6LPUDEV6SG42ZQAB

not attested not anchored not stored refs pending

NGC7538 IRS1 - an ionized jet powered by accretion

G. Sandell, M. Wright, S. Corder, W. M. Goss

arxiv:0905.4300 v1 · 2009-05-26 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VHU4ZLMQJU6LPUDEV6SG42ZQAB}

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	2026-07-04T15:45:07.181372Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9e9ccad904d3cb7d064afa46e6b30006c47334e3213b11250afbbc0b9a8b33a

Aliases

arxiv: 0905.4300 · arxiv_version: 0905.4300v1 · doi: 10.48550/arxiv.0905.4300 · pith_short_12: VHU4ZLMQJU6L · pith_short_16: VHU4ZLMQJU6LPUDE · pith_short_8: VHU4ZLMQ

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/VHU4ZLMQJU6LPUDEV6SG42ZQAB \
  | 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: a9e9ccad904d3cb7d064afa46e6b30006c47334e3213b11250afbbc0b9a8b33a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "41984e04fe523facafb24b2ae53485ddcad42803928e3dfa1fce0550fc027553",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-05-26T22:42:40Z",
    "title_canon_sha256": "7be860fbdcc6b45942a3effb1ea35b01173db162d7bb76b4821e6c7e3dba4464"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.4300",
    "kind": "arxiv",
    "version": 1
  }
}