Pith Number

pith:YQCO3YDM

pith:2015:YQCO3YDMUBBL6EYX6FYJOSQHR6

not attested not anchored not stored refs pending

HDFITS: porting the FITS data model to HDF5

B. R. Barsdell, D. C. Price, L. J. Greenhill

arxiv:1505.06421 v2 · 2015-05-24 · 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{YQCO3YDMUBBL6EYX6FYJOSQHR6}

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	2026-05-18T01:29:45.937370Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c404ede06ca042bf1317f170974a078fb16fe447bcffc16006a744e26f876e21

Aliases

arxiv: 1505.06421 · arxiv_version: 1505.06421v2 · doi: 10.48550/arxiv.1505.06421 · pith_short_12: YQCO3YDMUBBL · pith_short_16: YQCO3YDMUBBL6EYX · pith_short_8: YQCO3YDM

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/YQCO3YDMUBBL6EYX6FYJOSQHR6 \
  | 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: c404ede06ca042bf1317f170974a078fb16fe447bcffc16006a744e26f876e21

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c32c75d15c11b4b6c206974c7ad918fefd4508fa3008422bef1e803b1f6daae4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2015-05-24T09:35:25Z",
    "title_canon_sha256": "75e2aea6a35d1bea92f994ee01cf448edb3ac6d903dd9ca365e29d2d5fde8edc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.06421",
    "kind": "arxiv",
    "version": 2
  }
}