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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fed775f887fae1c8f98774ed0e450debbef21ba41d79066bd2d3c45674a457. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ecb8b98b-70dd-47b3-8ded-f1dcc5b9f25a.json and https://artists.proofprofile.net/proofs/artist/ecb8b98b-70dd-47b3-8ded-f1dcc5b9f25a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Letter To You - Live At Masarykovo nádraží / 2013
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533523ebe9c3449ab15ff950388554d54e6a9fb222c574fd52b33d03c3e9d65c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2DYyrMOsb63IB774scLaOa.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2DYyrMOsb63IB774scLaOa.
{"copyright_id":"0xd02a67d1edbec5c0f898b96abe5c966c520b83b845310c73a5aa1877ee91c9ba","isrc":"CZUM72000024","name":"Figure It Out","registered_at":"2026-06-29T12:40:49Z","spotify_id":"4xOLfwYVjGPLE8UNnxh7aF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02a67d1edbec5c0f898b96abe5c966c520b83b845310c73a5aa1877ee91c9ba. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4xOLfwYVjGPLE8UNnxh7aF.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4xOLfwYVjGPLE8UNnxh7aF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567fe292059253d4596eef1dc62947b8e479d2424ffe1418aaef40fb081c9a60. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5fpNozHtMoEqyH7HurpRui.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5fpNozHtMoEqyH7HurpRui.
Standing At The Corner Of Your Heart - Live / Bonus track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbc047c4dd4532e3658d49379f241bbf9d4329b258a6cf418e9e7e29d317791. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5YzAOBeDhRiuWVEj9YmbhA.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5YzAOBeDhRiuWVEj9YmbhA.
You Are My Everything - Live At Masarykovo nádraží / 2013
Concertino Live - Masarykovo nadrazi Praha
{"copyright_id":"0xc467beeaa8f6ffc4da973285c6cd9f2067963c31abd4592cf656ff5daa4d9a2a","isrc":"CZUM72000932","name":"Samotní nejsme nic","registered_at":"2026-06-05T17:19:38Z","spotify_id":"44m0ATVFWHlGcobAytQuVW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc467beeaa8f6ffc4da973285c6cd9f2067963c31abd4592cf656ff5daa4d9a2a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/44m0ATVFWHlGcobAytQuVW.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/44m0ATVFWHlGcobAytQuVW.