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 0xb8aa33020147529b9986534d8b2c70c1686fa8e88848a532fb00f5e45217e315. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f335e43-69ea-400e-a1bd-0e9ae5a956b4.json and https://artists.proofprofile.net/proofs/artist/8f335e43-69ea-400e-a1bd-0e9ae5a956b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xa3aab188fe634077614007aed7b875f3ecdea18a70ceaebfefde5bd862dba9c6","isrc":"NLT2H2300010","name":"Can't Say","registered_at":"2026-06-29T08:27:25Z","spotify_id":"4BHdN9mugCz2D0V4BoaDtr","type":"track"}
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 0xa3aab188fe634077614007aed7b875f3ecdea18a70ceaebfefde5bd862dba9c6. 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/4BHdN9mugCz2D0V4BoaDtr.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/4BHdN9mugCz2D0V4BoaDtr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea07c1ed77b0ada01df66baf6d1d94ecb1171e6899eda0fde2593084cec61be. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/23WizZB75r5Oq2oqFmzet8.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/23WizZB75r5Oq2oqFmzet8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158421c12176813398f6b7b11623a4559f82af4f18721d70e55bbfd528f6cf5d. 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/11z74TXN4JObdbyQNrIQYJ.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/11z74TXN4JObdbyQNrIQYJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abde8dbbd2e6571e562827c8ef5ebecc83368494597fe380e11c3ebb2a80701. 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/3ZBWNN7focL8SRvLePFiKp.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/3ZBWNN7focL8SRvLePFiKp.
{"copyright_id":"0x6e2fc036f40dda3bb31279767dfbcefe102c1e8cc16f80a1bd5e1b8fc0785ea8","isrc":"NLT2H2400344","name":"Weight of the World (Alande Remix)","registered_at":"2026-06-07T08:24:44Z","spotify_id":"5AtVtAzEIiBU7S8xTbLNnC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2fc036f40dda3bb31279767dfbcefe102c1e8cc16f80a1bd5e1b8fc0785ea8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5AtVtAzEIiBU7S8xTbLNnC.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/5AtVtAzEIiBU7S8xTbLNnC.