Mediachain Resolver

mchain-resolve.sh

# request fingerprint lookup from the API
% curl -X POST -H 'Content-Type: application/json' \
  -d '{"image_url": "http://www.susanmeiselas.com/images/uploads/MolotovMan-Booklet_520p_70_1.jpg"}' \
  https://mediachain-resolver.herokuapp.com/search
{
  "matches": [
    {
      "confidence": 1.0,
      "instance_id": "6580df51ed0d44b3a5519c1fc4e69e378df6ffde",
      "metadata_id": "QmRBHQVmjKTv6ust1SVjJ4WLQb2p7PJaA1bEespBjb8SwY"
    },
    {
      "confidence": 0.429,
      "instance_id": "1fc619f6183d5265b66c6a3550a827ddae134424",
      "metadata_id": "QmRBHQVmjKTv6ust1SVjJ4WLQb2p7PJaA1bEespBjb8SwY"
    },
    ...
  ]
}

# retrieve metadata block (IPFS daemon must be running)
% ipfs cat QmRBHQVmjKTv6ust1SVjJ4WLQb2p7PJaA1bEespBjb8SwY
{
	"thumbnailUrl": {
		"mlink": "QmXNDXmqfd9p5XXm6EBm6D2i1FbsaBQyBNEieZ2Czhxi77"
	},
	"@context": "http://schema.org",
	"author": "Susan Meiselas",
	"@type": "Photograph",
	"image_id": "c2ba20ae-8ccc-11e5-b627-83bff0768b7d"
}

# retrieve thumbnail image based on metadata
% ipfs get QmXNDXmqfd9p5XXm6EBm6D2i1FbsaBQyBNEieZ2Czhxi77
Saving file(s) to QmXNDXmqfd9p5XXm6EBm6D2i1FbsaBQyBNEieZ2Czhxi77
36.50 KB 0

# you can also use the IPFS-to-HTTP gateway:
% curl http://gateway.ipfs.io/ipfs/QmRBHQVmjKTv6ust1SVjJ4WLQb2p7PJaA1bEespBjb8SwY
{
	"thumbnailUrl": {
		"mlink": "QmXNDXmqfd9p5XXm6EBm6D2i1FbsaBQyBNEieZ2Czhxi77"
	},
  ...
}

# or use our helper script:
% ./mchain-resolve.sh http://www.susanmeiselas.com/images/uploads/MolotovMan-Booklet_520p_70_1.jpg
Metadata IPFS locator: QmRBHQVmjKTv6ust1SVjJ4WLQb2p7PJaA1bEespBjb8SwY
Resolving metadata using local ipfs installation...
{
  "thumbnailUrl": {
    "mlink": "QmXNDXmqfd9p5XXm6EBm6D2i1FbsaBQyBNEieZ2Czhxi77"
  }, ...
}