Pith Number

pith:IQCBK4EG

pith:2007:IQCBK4EGNM6BTFQCOS2ZTKDQCM

not attested not anchored not stored refs pending

The Magnetic Fields of Classical T Tauri Stars

Christopher M. Johns-Krull

arxiv:0704.2923 v1 · 2007-04-23 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IQCBK4EGNM6BTFQCOS2ZTKDQCM}

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	2026-07-04T15:44:16.118575Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

44041570866b3c19960274b599a87013108c7ed51af59ed7a6fe420bd53be3ae

Aliases

arxiv: 0704.2923 · arxiv_version: 0704.2923v1 · doi: 10.48550/arxiv.0704.2923 · pith_short_12: IQCBK4EGNM6B · pith_short_16: IQCBK4EGNM6BTFQC · pith_short_8: IQCBK4EG

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/IQCBK4EGNM6BTFQCOS2ZTKDQCM \
  | 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: 44041570866b3c19960274b599a87013108c7ed51af59ed7a6fe420bd53be3ae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "799a3396ee1e7b519583e5bd76c4c1ef11a861d68269cd9a8f2377db8d674acf",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-04-23T05:44:44Z",
    "title_canon_sha256": "b32612f1213b302ad890ef3c23368fa7f59818a615e1d48952096d3b235b15b9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0704.2923",
    "kind": "arxiv",
    "version": 1
  }
}