Pith Number

pith:NU2AY63T

pith:2006:NU2AY63TSI4SNJR6BUL6ILS6PX

not attested not anchored not stored refs pending

On the age of the TW Hydrae Association and 2M1207334-393254

David Barrado y Navascues

arxiv:astro-ph/0608478 v1 · 2006-08-23 · 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{NU2AY63TSI4SNJR6BUL6ILS6PX}

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	2026-05-18T01:11:40.152737Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d340c7b73923926a63e0d17e42e5e7dc5bd64ff5b1e11750fff751af566baa8

Aliases

arxiv: astro-ph/0608478 · arxiv_version: astro-ph/0608478v1 · doi: 10.48550/arxiv.astro-ph/0608478 · pith_short_12: NU2AY63TSI4S · pith_short_16: NU2AY63TSI4SNJR6 · pith_short_8: NU2AY63T

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/NU2AY63TSI4SNJR6BUL6ILS6PX \
  | 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: 6d340c7b73923926a63e0d17e42e5e7dc5bd64ff5b1e11750fff751af566baa8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b83802a4f3b531a7bfdaf3b6e44b734f1a8cf0c6e034957b56600f89f9eac16",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-08-23T09:52:13Z",
    "title_canon_sha256": "41d0682704649f10bf218ff6f552501c3cc79862cce78a0a55c2091f2673d187"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0608478",
    "kind": "arxiv",
    "version": 1
  }
}