Pith Number

pith:3TTZD2U3

pith:2019:3TTZD2U3DES3AFRD3CAQCGHSQV

not attested not anchored not stored refs pending

A Swift view of X-ray and UV radiation in the planet-forming T-Tauri system PDS 70

John Pye, Jonathan Nichols, Kim Page, Manuel Gudel, Richard Alexander, Simon Joyce, Yanina Metodieva

arxiv:1911.00297 v1 · 2019-11-01 · astro-ph.SR · astro-ph.EP · 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{3TTZD2U3DES3AFRD3CAQCGHSQV}

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	2026-07-05T00:30:33.322740Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dce791ea9b1925b01623d8810118f2856d81cd6a344419da23bb25fd4a51d2c8

Aliases

arxiv: 1911.00297 · arxiv_version: 1911.00297v1 · doi: 10.48550/arxiv.1911.00297 · pith_short_12: 3TTZD2U3DES3 · pith_short_16: 3TTZD2U3DES3AFRD · pith_short_8: 3TTZD2U3

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/3TTZD2U3DES3AFRD3CAQCGHSQV \
  | 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: dce791ea9b1925b01623d8810118f2856d81cd6a344419da23bb25fd4a51d2c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "65990a0095e3ea23a87c316eb62d5c5e057e3fa22932b31bf6f98c695ee70dd0",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-11-01T10:56:13Z",
    "title_canon_sha256": "ad42f94a3331a65e5e9854b9a0b6af7fcc101a9ae28bf16783183bd95996cf13"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.00297",
    "kind": "arxiv",
    "version": 1
  }
}