Pith Number

pith:TW4DYYD7

pith:2009:TW4DYYD74M7J27Z55VP5NJ3JQZ

not attested not anchored not stored refs pending

High Angular Resolution Radio Observations of the HL/XZ Tau Region: Mapping the 50 AU Protoplanetary Disk around HL Tau and Resolving XZ Tau S into a 13 AU Binary

Carlos Carrasco-Gonzalez, Guillem Anglada, Luis F. Rodriguez, Salvador Curiel

arxiv:0901.3744 v1 · 2009-01-23 · 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{TW4DYYD74M7J27Z55VP5NJ3JQZ}

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	2026-05-18T04:29:17.202218Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9db83c607fe33e9d7f3ded5fd6a7698660cc387c6c75b2f46872f797a5bd03e8

Aliases

arxiv: 0901.3744 · arxiv_version: 0901.3744v1 · doi: 10.48550/arxiv.0901.3744 · pith_short_12: TW4DYYD74M7J · pith_short_16: TW4DYYD74M7J27Z5 · pith_short_8: TW4DYYD7

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/TW4DYYD74M7J27Z55VP5NJ3JQZ \
  | 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: 9db83c607fe33e9d7f3ded5fd6a7698660cc387c6c75b2f46872f797a5bd03e8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f66e16c6c66823316788b919fd5384d5b325299c8d0f781636ab863282042dd5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-01-23T18:30:10Z",
    "title_canon_sha256": "7017139a99ae45d3f89b8d6b8bb4638eeaadfbcb5b7462aa8738df4a3da782dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.3744",
    "kind": "arxiv",
    "version": 1
  }
}