Mass is an intrinsic property of a body. In modern physics, it is generally defined as the strength of an object's gravitational attraction to other bodies - as measured by an observer moving along at
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d8e33b760fbd1a4846bd70d9aa9c8f84711a797e105f362c2a3460c7ff99a1. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdafb919-e5db-42c4-88e5-066a5abd3aa0.json and https://artists.proofprofile.net/proofs/artist/fdafb919-e5db-42c4-88e5-066a5abd3aa0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Playing in a Rock 'N' Roll Band - Bonus Track
Playing In A Rock 'N' Roll Band - Bonus Track