How do we get the fingerprint of an non ADA asset #341
Answered
by
gitmachtl
PaulMatencio
asked this question in
Q&A
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How do we get the fingerprint for an asset policy and its asset id (or asset_ascii) ? "asset_ascii":"PolyPeer2214","policy":"ef76f6f0b3558ea0aaad6af5c9a5f3e5bf20b393314de747662e8ce9" As for instance from db-sync multi_asset table Policy: 0xEF76F6F0B3558EA0AAAD6AF5C9A5F3E5BF20B393314DE747662E8CE9 |
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Answered by
gitmachtl
Jun 23, 2022
Replies: 4 comments 3 replies
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This is simple, here is a oneliner in bash: PolyPeer2214 into hex $ echo -n "PolyPeer2214" | xxd -ps
506f6c795065657232323134Concate it with the policyID -> Calculate the fingerprint $ echo -n "ef76f6f0b3558ea0aaad6af5c9a5f3e5bf20b393314de747662e8ce9506f6c795065657232323134" | xxd -r -ps | b2sum -l 160 -b | cut -d' ' -f 1 | ./bech32 asset
asset1q924wa9xs5uz3cr4pazgv329pka4d22mhgevd5what you do is to concate a hexstring of the policyid+assetname. than you convert that into bytes, do a blake2b (160bits->20bytes) hashing on it and than that is bech32 encoded with the prefix "asset" |
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2 replies
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Thank you. It is greatly appreciated. When you know, it is so easy. |
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Just in case , here is the same thing in golang for people who are interested import "golang.org/x/crypto/blake2b" |
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Answer selected by
PaulMatencio
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Thank you .
It is greatly appreciated
Kind regards
Paul Matencio
…On Thu, Jun 23, 2022, 8:45 PM Martin Lang ***@***.***> wrote:
This is simple, here is a oneliner in bash:
echo -n "34250edd1e9836f5378702fbf9416b709bc140e04f668cc3552085184154414441636f696e" | xxd -r -ps | b2sum -l 160 -b | cut -d' ' -f 1 | ./bech32 asset
what you do is to concate a hexstring of the policyid+assetname. than you
convert that into bytes, to a blake2 hashing on it and than that is bech32
encoded with the prefix "asset"
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0 replies
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@PaulMatencio @gitmachtl would it help if we added the bech32 encoding for assets as part of the event output? |
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1 reply
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for me, don't think so. can be easily processed after and takes quite a time to encode everytime i guess. you mean as an additional info right? because bech32 encoded assets cannot be decoded back into policyID+assetName. |
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Hi Santiago
I believe so. It would be great so I don't have to do it.
Here is my transaction document model created during the extraction of
the cardano events provided by oura .
It should be noted that due to lack of history I could not add missing
addresses to uxto_input collateral, mint etc .. At the end of each block,
I will keep only one document per transaction, it saves me a lot of space
and speeds up further queries ( need just to extract a subpart of a
document). The process is pretty past thanks to the concurrency features
of the programming language I am using.
Kind regards
Paul Matencio
*Here is my transaction document model *
context.tx_hash
8f9a8f3ac874e540fe37a20da2c7472347ca82b731fc65a6fe96648e115b412f
{
"context": {
"block_hash":
"8efab7f05865cb50c5bbf46dc8a2567bf550e9326c099384f5717e72777118ab",
"block_number": 7412016,
"certificate_idx": null,
"input_idx": null,
"output_address": null,
"output_idx": null,
"slot": 64415645,
"timestamp": 1655981936,
"tx_hash":
"8f9a8f3ac874e540fe37a20da2c7472347ca82b731fc65a6fe96648e115b412f",
"tx_idx": 9
},
"fingerprint":
*"64415645.trans.38828000133457693162287893424143555641",*
"transaction": {
"fee": 569467,
"hash":
"8f9a8f3ac874e540fe37a20da2c7472347ca82b731fc65a6fe96648e115b412f",
"input_count": 2,
"inputs": null,
"metadata": null,
"mint": null,
"mint_count": 0,
"native_witnesses": null,
"network_id": null,
"output_count": 2,
"outputs": null,
"plutus_data": null,
"plutus_redeemers": null,
"plutus_witnesses": null,
"total_output": 6154633,
"ttl": 64419159,
"validity_interval_start": 64415559,
"vkey_witnesses": null
},
"utxo_output": [
{
"address":
"addr1zxj47sy4qxlktqzmkrw8dahe46gtv8seakrshsqz26qnvzypw288a4x0xf8pxgcntelxmyclq83s0ykeehchz2wtspksr3q9nx",
"amount": 1724100,
"assets": [
{
"amount": 1,
"asset": "43727970746f44696e6f3036333533",
"asset_ascii": "CryptoDino06353",
"policy":
"7a5a5c3757d33c2b2ff0b09405676e61f93d28b5d12805dd3320e31f",
* "finger_print":
"asset1ugffhqg9ztf66tpy046xzmkxdz3y0hhjmqfywd"*
}
]
},
{
"address":
"addr1qxe4u8t3292kwj9a9mqays0f4he6telz4rf8cxaqnskzqclkl528y00v3m6yvfjjkwzul75f5cz86g6ahdzpn89h55msrhhhw9",
"amount": 4430533,
"assets": []
}
],
"utxo_input": [
{
"index": 0,
"tx_id":
"bcf5fb79e66b566bbf38500edab962409cfe84ca55936b07e2c830b9f9a010df",
"address":""
},
{
"index": 2,
"tx_id":
"a51ba880f3b09545264d52be8b8a6f077a583e4992113012e9c7c66a37129f30",
* "address":""*
}
],
"metadata": {
"label": "0",
"text_scalar":
"d8799f581cb35e1d7151556748bd2ec1d241e9adf3a5e7e2a8d27c1ba09c2c20",
"map_json": [
{
"Key": "msg",
"Value": [
"Minswap: Withdraw Order"
]
}
]
},
"collateral": {
"index": 0,
"tx_id":
"33bcc7dd7ba1ea8fefb7319f2884445db541cce065542611e658739d7f512b82",
* "address": ""*
},
"plutus_witness": {
"script_hash":
"7f3ffaaebb69fc434d960ee835e5b2a349a8fb765c1423439dd79fe3",
"script_hex":
"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…On Wed, Jul 6, 2022 at 9:29 PM Santiago Carmuega ***@***.***> wrote:
@PaulMatencio <https://github.com/PaulMatencio> @gitmachtl
<https://github.com/gitmachtl> would it help if we added the bech32
encoding for assets as part of the event output?
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This is simple, here is a oneliner in bash:
PolyPeer2214 into hex
Concate it with the policyID ->
ef76f6f0b3558ea0aaad6af5c9a5f3e5bf20b393314de747662e8ce9506f6c795065657232323134Calculate the fingerprint
what you do is to concate a hexstring of the policyid+assetname. than you convert that into bytes, do a blake2b (160bits->20bytes) hashing on it and than that is bech32 encoded with the prefix "asset"