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 0x64068faf5c221c1c6af55eff4fc5219f75d75ba3e2158a6863ea025e82f47b9f. 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/b9acf6a5-2668-4001-8073-6ab36690cc83.json and https://artists.proofprofile.net/proofs/artist/b9acf6a5-2668-4001-8073-6ab36690cc83.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x70004fa2a87d72224e3c99c5192ddd26e37118157892262fab07c26f7b9e9ebd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6TxjgWYwIhSMaTQiwBbjE0.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/6TxjgWYwIhSMaTQiwBbjE0.
{"copyright_id":"0xb2be249e111a6eeae80505bf4a407132e37ed21ada43231f25ad85c241bba033","isrc":"QZHNC2463750","name":"Wait For You","registered_at":"2026-06-07T14:26:01Z","spotify_id":"5t9VwadTm5eAyeeTx6AEda","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2be249e111a6eeae80505bf4a407132e37ed21ada43231f25ad85c241bba033. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5t9VwadTm5eAyeeTx6AEda.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/5t9VwadTm5eAyeeTx6AEda.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f8e8ae95e3a9fd01db125f2457c1b1e432bc63513dcd0e17fa7bfce8652573. 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/5jZv4tMuNZX7HS3vj8F9Qs.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/5jZv4tMuNZX7HS3vj8F9Qs.
{"copyright_id":"0xb2be249e111a6eeae80505bf4a407132e37ed21ada43231f25ad85c241bba033","isrc":"QZHNC2463750","name":"Wait For You","registered_at":"2026-06-07T14:26:01Z","spotify_id":"7Fdv0xNAAqwi0uXnrowKo9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2be249e111a6eeae80505bf4a407132e37ed21ada43231f25ad85c241bba033. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7Fdv0xNAAqwi0uXnrowKo9.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/7Fdv0xNAAqwi0uXnrowKo9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690c576798998bac7e5ed58b307d01f55e52bb411ac9b999a861d1948c943160. 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/3qYjAxjvzzlGinGsOV8RWu.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/3qYjAxjvzzlGinGsOV8RWu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3e47bf4ed22cb879de8170cbb1f4a23718ae64b14575765e23db594730c8c3. 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/7AitwEypZirvIFu9TU4leP.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/7AitwEypZirvIFu9TU4leP.
Looking At You (feat. Sam Vesso) [Leondis Remix]
Looking At You (feat. Sam Vesso) - Leondis Remix
Caught Up (feat. Olivia O'Brien) - Zack Martino x Leondis Remix
Caught Up (feat. Olivia O'Brien) [Remixes]
{"copyright_id":"0xf6186a85c7b19f066d912f59ea7591c2a832577a7e5e1a665d0cbd88e6cd390b","isrc":"USUM72215712","name":"Caught Up (feat. Olivia O'Brien) - Zack Martino x Leondis Remix","registered_at":"2026-06-06T23:55:32Z","spotify_id":"6rHJ268lwbpsIvdljb9lKR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6186a85c7b19f066d912f59ea7591c2a832577a7e5e1a665d0cbd88e6cd390b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6rHJ268lwbpsIvdljb9lKR.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/6rHJ268lwbpsIvdljb9lKR.
Warm Water, Winter Winds - Leondis Remix
{"copyright_id":"0x1879a538832bd74730e0ef32ab6fd25bab2aad6d6335ab84c2b89a42f0b589fd","isrc":"USAT22312492","name":"Warm Water, Winter Winds - Leondis Remix","registered_at":"2026-06-17T20:26:43Z","spotify_id":"406cDwSqntSts5I1huD17O","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1879a538832bd74730e0ef32ab6fd25bab2aad6d6335ab84c2b89a42f0b589fd. 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/406cDwSqntSts5I1huD17O.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/406cDwSqntSts5I1huD17O.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343c800b431c14839cb77a2460a842d106864b3a0937a8d993f88ce3aef13595. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1rBqcBbtMugXyuwexGNyPp.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/1rBqcBbtMugXyuwexGNyPp.
{"copyright_id":"0x943baa1cf14e40290928390d2dae0979dea53b2e5f0a01beac28ae6fa063419f","isrc":"US3DF2141776","name":"Hate You + Love You (Leondis Remix)","registered_at":"2026-06-20T19:08:53Z","spotify_id":"2J0kPdkqgAH2FpoLtCAFT9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943baa1cf14e40290928390d2dae0979dea53b2e5f0a01beac28ae6fa063419f. 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/2J0kPdkqgAH2FpoLtCAFT9.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/2J0kPdkqgAH2FpoLtCAFT9.
Looking At You (feat. Sam Vesso) [Remixes]
{"copyright_id":"0xbb884d365f3695485e0a898c80b1f7298c84f485e9b425e380ce2dfbf96d6b94","isrc":"QZ5FN2193803","name":"Liar Liar - Leondis Remix","registered_at":"2026-06-07T09:04:42Z","spotify_id":"3DT8ewOk0w1MVHgKkYrN9t","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb884d365f3695485e0a898c80b1f7298c84f485e9b425e380ce2dfbf96d6b94. 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/3DT8ewOk0w1MVHgKkYrN9t.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/3DT8ewOk0w1MVHgKkYrN9t.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942a9bca28837a22802053b4c625f57d691397db60b15a943c08422c1d0702c7. 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/6YC0lyNiafzuOO6S8cUtmZ.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/6YC0lyNiafzuOO6S8cUtmZ.
{"copyright_id":"0xcb6e4ca2687e04b85f99d9f03541aa4a26b8052ab2138cb753dc5ab6e87318bb","isrc":"USUM72312104","name":"You Got Me - Leondis Remix","registered_at":"2026-06-22T06:49:41Z","spotify_id":"4FE0afQm4LIaNYFdqwDD8y","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6e4ca2687e04b85f99d9f03541aa4a26b8052ab2138cb753dc5ab6e87318bb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4FE0afQm4LIaNYFdqwDD8y.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/4FE0afQm4LIaNYFdqwDD8y.
{"copyright_id":"0x204fe823285044dca1d9c66dca35c3098d9c868495ad0500f001fd02a8800c7b","isrc":"QZPLR2467404","name":"Nights Like This","registered_at":"2026-06-09T16:29:40Z","spotify_id":"7JOBlLocnSUskKATQk6PEj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204fe823285044dca1d9c66dca35c3098d9c868495ad0500f001fd02a8800c7b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7JOBlLocnSUskKATQk6PEj.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/7JOBlLocnSUskKATQk6PEj.