Pith Number

pith:VRD6V3AJ

pith:2009:VRD6V3AJPBLIB35QKDDP5X433L

not attested not anchored not stored refs pending

Is 44 Tau in the post-MS contraction phase?

Alexey A. Pamyatnykh, Michel Breger, Patrick Lenz

arxiv:0909.4631 v1 · 2009-09-25 · 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{VRD6V3AJPBLIB35QKDDP5X433L}

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	2026-05-18T02:11:37.797155Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac47eaec09785680efb050c6fedf9bdade66c10274615111faabc469b6f98577

Aliases

arxiv: 0909.4631 · arxiv_version: 0909.4631v1 · doi: 10.48550/arxiv.0909.4631 · pith_short_12: VRD6V3AJPBLI · pith_short_16: VRD6V3AJPBLIB35Q · pith_short_8: VRD6V3AJ

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/VRD6V3AJPBLIB35QKDDP5X433L \
  | 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: ac47eaec09785680efb050c6fedf9bdade66c10274615111faabc469b6f98577

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2145f9eecc6535a472d9fa3cf9e00e319b2bb0f3a2fa0ee2a8a9faf3ebc37e2c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-09-25T08:12:00Z",
    "title_canon_sha256": "e5ce8ac2895c0a2c668f7895c01dae1372e02f1c04e3a115c39f498c6252e7da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.4631",
    "kind": "arxiv",
    "version": 1
  }
}