Pith Number

pith:N2DXOSQF

pith:2009:N2DXOSQFAPGUIJQZOIR5RMXAXI

not attested not anchored not stored refs pending

The extremely collimated bipolar H_2O jet from the NGC 1333-IRAS 4B protostar

C. Codella, J.-F. Desmurs, J. Santiago-Garcia, M. Tafalla, R. Bachiller

arxiv:0903.2770 v1 · 2009-03-16 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state 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

✓ 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	2026-05-18T02:14:27.989737Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e87774a0503cd4426197223d8b2e0ba3eea86c2888556d8e96fbeff1a92206f

Aliases

arxiv: 0903.2770 · arxiv_version: 0903.2770v1 · doi: 10.48550/arxiv.0903.2770 · pith_short_12: N2DXOSQFAPGU · pith_short_16: N2DXOSQFAPGUIJQZ · pith_short_8: N2DXOSQF

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/N2DXOSQFAPGUIJQZOIR5RMXAXI \
  | 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: 6e87774a0503cd4426197223d8b2e0ba3eea86c2888556d8e96fbeff1a92206f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4fdd381e9e93174ad02a0460de66fb8fce4cf20eb02507001690badfbbeb3a3e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-03-16T14:53:17Z",
    "title_canon_sha256": "9042a00d6c3e3bace733f89dd710be962172b7748ff1fab04c0a922e123e2be2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.2770",
    "kind": "arxiv",
    "version": 1
  }
}