Pith Number

pith:HMWQ4XYK

pith:2016:HMWQ4XYKHTXJXTEBQF3XCKFOPZ

not attested not anchored not stored refs pending

Carbon and hydrogen radio recombination lines from the cold clouds towards Cassiopeia A

A. G. G. M. Tielens, F. Salgado, H. J. A Rottgering, J. B. R. Oonk, L. K. Morabito, M. C. Toribio, P. Salas, R. J. van Weeren

arxiv:1609.06857 v2 · 2016-09-22 · 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{HMWQ4XYKHTXJXTEBQF3XCKFOPZ}

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	2026-05-18T00:55:11.713717Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b2d0e5f0a3cee9bcc8181777128ae7e420c653da829ed0b63c0dfd083835987

Aliases

arxiv: 1609.06857 · arxiv_version: 1609.06857v2 · doi: 10.48550/arxiv.1609.06857 · pith_short_12: HMWQ4XYKHTXJ · pith_short_16: HMWQ4XYKHTXJXTEB · pith_short_8: HMWQ4XYK

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/HMWQ4XYKHTXJXTEBQF3XCKFOPZ \
  | 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: 3b2d0e5f0a3cee9bcc8181777128ae7e420c653da829ed0b63c0dfd083835987

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19358d12d2a5d764dd70b49e7ffaf0d4ca3853b427cba20d7a63d4f6091cc5ad",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-09-22T08:11:37Z",
    "title_canon_sha256": "01d6c7ab3cb7f5cb1113d229b49a9d87f482995b9a8d44f779a78ea8fcbbf4b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.06857",
    "kind": "arxiv",
    "version": 2
  }
}