Pith Number

pith:PKEXSPAR

pith:2015:PKEXSPARHZIMSSEFMDLCVNMFSD

not attested not anchored not stored refs pending

From Cosmic Birth to Living Earths: The Future of UVOIR Space Astronomy

Charlie Conroy, Chris Hirata, Dave Redding, David Schiminovich, H. Philip Stahl, Jason Tumlinson, John Mather, Julianne Dalcanton, Lee Feinberg, Marc Postman, Niel Brandt, Olivier Guyon, Sara Seager, Steve Battel, Suvi Gezari, Suzanne Aigrain, Walt Harris

arxiv:1507.04779 v2 · 2015-07-16 · astro-ph.IM · astro-ph.CO · astro-ph.EP · astro-ph.GA · astro-ph.SR

Open paper page JSON What is a Pith Number?

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

Receipt and verification

First computed	2026-05-18T01:36:12.553219Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a89793c113e50c9488560d62ab58590e6a08d2785d25c50f31381ce7ae4659c

Aliases

arxiv: 1507.04779 · arxiv_version: 1507.04779v2 · doi: 10.48550/arxiv.1507.04779 · pith_short_12: PKEXSPARHZIM · pith_short_16: PKEXSPARHZIMSSEF · pith_short_8: PKEXSPAR

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/PKEXSPARHZIMSSEFMDLCVNMFSD \
  | 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: 7a89793c113e50c9488560d62ab58590e6a08d2785d25c50f31381ce7ae4659c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6245ee03ed360cdd01c9b819617a52462b3644b0e8daea4a18f9beb7a898c852",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.EP",
      "astro-ph.GA",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2015-07-16T21:35:48Z",
    "title_canon_sha256": "ab123e4fd34616302113d434f18b12fa89b03f05b21e6d99afba805300b2b0d8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.04779",
    "kind": "arxiv",
    "version": 2
  }
}