Hacky Sack
type: MusicGroup
description: thumb|A crocheted footbag A hacky sack is a small, round bag usually filled with plastic pellets or sand, which is kicked into the air as part of a competitive game or as a display of dexterity. "Ha
popularity: 2
followers: 140
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcdb0860fc198f0b21661c3fdfeafabffb8a5e366b9c45784f1ed5b86c508c741
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954050
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954050
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/42ddf713-86c9-4c45-9f43-67b5bd60ec5c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/42ddf713-86c9-4c45-9f43-67b5bd60ec5c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/42ddf713-86c9-4c45-9f43-67b5bd60ec5c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T05:14:33Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcdb0860fc198f0b21661c3fdfeafabffb8a5e366b9c45784f1ed5b86c508c741","name":"Hacky Sack","registered_at":"2026-06-16T12:53:13Z","symbol":"NIM1057973","token_address":"0x352dd5a1dc8887d34fc55928c6cdbe520476035f","type":"artist","uuid":"42ddf713-86c9-4c45-9f43-67b5bd60ec5c"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb0860fc198f0b21661c3fdfeafabffb8a5e366b9c45784f1ed5b86c508c741. Chain 2 (Bitcoin): anchored in block 954050 (2026-06-17T05:14:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/42ddf713-86c9-4c45-9f43-67b5bd60ec5c.json and https://artists.proofprofile.net/proofs/artist/42ddf713-86c9-4c45-9f43-67b5bd60ec5c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T05:14:33Z
  text: {"copyright_id":"0xcdb0860fc198f0b21661c3fdfeafabffb8a5e366b9c45784f1ed5b86c508c741","name":"Hacky Sack","registered_at":"2026-06-16T12:53:13Z","symbol":"NIM1057973","token_address":"0x352dd5a1dc8887d34fc55928c6cdbe520476035f","type":"artist","uuid":"42ddf713-86c9-4c45-9f43-67b5bd60ec5c"}
album: Columbia Sessions
  type: MusicAlbum
  date published: 2025-01-08
album: Bringin' The Bowl
  type: MusicAlbum
  date published: 2025-06-01