Pith Number

pith:CPREZ44C

pith:2019:CPREZ44C7S3WBYTJBCZUHWZV6Z

not attested not anchored not stored refs pending

Stringent limits on the magnetic field strength in the disc of TW Hya: ALMA observations of CN polarisation

B. Lankhaar, C. Ceccobello, D. Dall'Olio, E.F. van Dishoeck, E.M.L. Humphreys, J.P. Williams, L. Testi, M.V. Persson, P. Cazzoletti, S. Facchini, W.H.T. Vlemmings

arxiv:1904.01632 v1 · 2019-04-02 · 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{CPREZ44C7S3WBYTJBCZUHWZV6Z}

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	2026-05-17T23:48:29.608990Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13e24cf382fcb760e26908b343db35f65346f2f43f4330e0b24424097c6acb8c

Aliases

arxiv: 1904.01632 · arxiv_version: 1904.01632v1 · doi: 10.48550/arxiv.1904.01632 · pith_short_12: CPREZ44C7S3W · pith_short_16: CPREZ44C7S3WBYTJ · pith_short_8: CPREZ44C

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/CPREZ44C7S3WBYTJBCZUHWZV6Z \
  | 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: 13e24cf382fcb760e26908b343db35f65346f2f43f4330e0b24424097c6acb8c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c02ce05cc0a135e589c88fea954911398617a8a8ced89afef889c7207323987",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-04-02T19:23:31Z",
    "title_canon_sha256": "09beff70b7a2707f875187541d2cb6e150a7f84a47832b6cbf082a73703c823f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.01632",
    "kind": "arxiv",
    "version": 1
  }
}