Pith Number

pith:4YHXRWXB

pith:2009:4YHXRWXBEUFD7LVX6GA5BUA2EI

not attested not anchored not stored refs pending

Thirty Meter Telescope Site Testing I: Overview

A. Otarola, A. Walker, B. Gregory, D. Walker, E. Bustos, G. Chanan, J. Nelson, J. Seguel, J. Vasquez, L. Wang, M. Schoeck, P. Gillett, R. Blum, R. Riddle, S. Els, S.G. Djorgovski, T. Travouillon, W. Skidmore

arxiv:0904.1183 v1 · 2009-04-07 · astro-ph.IM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4YHXRWXBEUFD7LVX6GA5BUA2EI}

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	2026-05-18T02:14:07.002932Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e60f78dae1250a3faeb7f181d0d01a221de9f1be4cd5358c2c4d8e732f1b257b

Aliases

arxiv: 0904.1183 · arxiv_version: 0904.1183v1 · doi: 10.48550/arxiv.0904.1183 · pith_short_12: 4YHXRWXBEUFD · pith_short_16: 4YHXRWXBEUFD7LVX · pith_short_8: 4YHXRWXB

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/4YHXRWXBEUFD7LVX6GA5BUA2EI \
  | 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: e60f78dae1250a3faeb7f181d0d01a221de9f1be4cd5358c2c4d8e732f1b257b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f8791dd0b2db61a34ef0aea45a1db969a3a69d67a91a836ab93bca12642891a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-04-07T17:16:07Z",
    "title_canon_sha256": "22ce9e957bdf4960d26fc46b8cd9b794a59ec01647da83908e882074abe82881"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.1183",
    "kind": "arxiv",
    "version": 1
  }
}