Pith Number

pith:HHGQXHVM

pith:2009:HHGQXHVMGE5B25JVHD2MXJPSCD

not attested not anchored not stored refs pending

Testing the models: NIR imaging and spectroscopy of the benchmark T-dwarf binary Eps Indi B

Adam Burrows, Markus Kasper, Wolfgang Brandner

arxiv:0901.1997 v1 · 2009-01-14 · 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{HHGQXHVMGE5B25JVHD2MXJPSCD}

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	2026-05-18T04:29:23.874904Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39cd0b9eac313a1d753538f4cba5f210dcedb04f949e14d639c532ac10aab07d

Aliases

arxiv: 0901.1997 · arxiv_version: 0901.1997v1 · doi: 10.48550/arxiv.0901.1997 · pith_short_12: HHGQXHVMGE5B · pith_short_16: HHGQXHVMGE5B25JV · pith_short_8: HHGQXHVM

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/HHGQXHVMGE5B25JVHD2MXJPSCD \
  | 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: 39cd0b9eac313a1d753538f4cba5f210dcedb04f949e14d639c532ac10aab07d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c00fe89a85dba6b176ab79362769036893d3f6c03af2e14c24ea28e93b62104",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-01-14T13:11:21Z",
    "title_canon_sha256": "2f23f672b151779ffc8a154f96bb0dde54b27d8a280871e5e6a64c2d5ffe74c6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.1997",
    "kind": "arxiv",
    "version": 1
  }
}