Pith Number

pith:UG3F2T7M

pith:2008:UG3F2T7MT6L4T4MQTY2ATVPNNC

not attested not anchored not stored refs pending

Vsop2/Astro-G Project

Masato Tsuboi

arxiv:0809.3350 v1 · 2008-09-19 · 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{UG3F2T7MT6L4T4MQTY2ATVPNNC}

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	2026-05-18T02:35:14.749524Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a1b65d4fec9f97c9f1909e3409d5ed68bafa315892a1ed8f2a78c827102e88e2

Aliases

arxiv: 0809.3350 · arxiv_version: 0809.3350v1 · doi: 10.48550/arxiv.0809.3350 · pith_short_12: UG3F2T7MT6L4 · pith_short_16: UG3F2T7MT6L4T4MQ · pith_short_8: UG3F2T7M

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/UG3F2T7MT6L4T4MQTY2ATVPNNC \
  | 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: a1b65d4fec9f97c9f1909e3409d5ed68bafa315892a1ed8f2a78c827102e88e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ba80636e183ab3a166974570479876b0a7c7133104f27cccd3c4e2c56820495",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-09-19T10:25:47Z",
    "title_canon_sha256": "cc6fe73089cfbf56d9c9400cdce49f4365a00b0c07314e539620a1c84b7cd937"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.3350",
    "kind": "arxiv",
    "version": 1
  }
}