Pith Number

pith:HL4MXF6R

pith:2009:HL4MXF6RSAU2ICJ446K6R3S4WB

not attested not anchored not stored refs pending

The VLT-FLAMES Tarantula Survey

A. de Koter, A. Herrero, C. J. Evans, C. Trundle, D. J. Lennon, F. Najarro, G. Graefener, H. Sana, I. Brott, I. D. Howarth, J. Maiz Apellaniz, J. Puls, J. S. Clark, J. S. Vink, J. Th. van Loon, M. Cantiello, M. Gieles, N. Bastian, N. Langer, N. Markova, N. R. Walborn, P. A. Crowther, P. Dunstall, P. L. Dufton, S. de Mink, S. J. Smartt, S. Simon-Diaz, V. E. Stroud, V. Henault-Brunet, W. D. Taylor, Y. Beletsky

arxiv:0909.1652 v1 · 2009-09-09 · astro-ph.CO · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HL4MXF6RSAU2ICJ446K6R3S4WB}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:11:58.187705Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3af8cb97d19029a4093ce795e8ee5cb055e40934696265949379748a8149469d

Aliases

arxiv: 0909.1652 · arxiv_version: 0909.1652v1 · doi: 10.48550/arxiv.0909.1652 · pith_short_12: HL4MXF6RSAU2 · pith_short_16: HL4MXF6RSAU2ICJ4 · pith_short_8: HL4MXF6R

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/HL4MXF6RSAU2ICJ446K6R3S4WB \
  | 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: 3af8cb97d19029a4093ce795e8ee5cb055e40934696265949379748a8149469d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "96ef5b5717de6f0bc3dc1d88ef14fe47f0ff6bd26273486ab87819d8c53f9d2f",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-09-09T08:58:16Z",
    "title_canon_sha256": "1b0a0e64895e001be641581f1438fcac777c9c6ed3546083f5a199a2295f6f8c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.1652",
    "kind": "arxiv",
    "version": 1
  }
}