For me, the best link you gave was coinsecrets.org. Most of the listed blockchain metadata seems to point off to one of these three: https://github.com/OpenAss

For me, the best link you gave was coinsecrets.org. Most of the listed blockchain metadata seems to point off to one of these three: https://github.com/OpenAssets/open-assets-protocol/blob/master/specification.mediawiki https://github.com/OpenAssets/open-assets-protocol/blob/mast... http://coinspark.org/ http://coinspark.org/ http://www.proofofexistence.com/ http://www.proofofexistence.com/