Pith Number

pith:C6AHGRXF

pith:2013:C6AHGRXFCGEQXYYUMCAOW3TTLW

not attested not anchored not stored refs pending

Fragmentation, infall, and outflow around the showcase massive protostar NGC7538 IRS1 at 500 AU resolution

H. Beuther, H. Linz, Th. Henning

arxiv:1309.1018 v1 · 2013-09-04 · 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{C6AHGRXFCGEQXYYUMCAOW3TTLW}

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	2026-05-18T01:47:49.872716Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

17807346e511890be3146080eb6e735d8a2b63c1f57ae4d2fb9ed6de87628427

Aliases

arxiv: 1309.1018 · arxiv_version: 1309.1018v1 · doi: 10.48550/arxiv.1309.1018 · pith_short_12: C6AHGRXFCGEQ · pith_short_16: C6AHGRXFCGEQXYYU · pith_short_8: C6AHGRXF

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/C6AHGRXFCGEQXYYUMCAOW3TTLW \
  | 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: 17807346e511890be3146080eb6e735d8a2b63c1f57ae4d2fb9ed6de87628427

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "701adfb13688862843cdc53f5d2461424cf482ad257cdd97d3361d3feb3fb30a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-09-04T13:09:17Z",
    "title_canon_sha256": "2a5e52954f285f2297fe9a556e57e0c3672cc61884e04f0fdd9422a182591ea6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.1018",
    "kind": "arxiv",
    "version": 1
  }
}