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 0xe7f352d76d293b39fe387fdb2d8e81519b11ff30b49c74ca0944717ba7a2cfa1. 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/384a32a7-b4aa-4dcb-81f8-ad58344dd232.json and https://artists.proofprofile.net/proofs/artist/384a32a7-b4aa-4dcb-81f8-ad58344dd232.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ben Met Je (feat. ADF Samski & Kaya Imani)
{"copyright_id":"0xc288b3ac5ff54c9f4dc12e75a29aba226f467ed212af0ab6a84d8fd050501165","isrc":"NL5HJ2400063","name":"Ben Met Je (feat. ADF Samski & Kaya Imani)","registered_at":"2026-06-05T23:19:07Z","spotify_id":"3drxjrMX1uJ0qtoGSodwrZ","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 0xc288b3ac5ff54c9f4dc12e75a29aba226f467ed212af0ab6a84d8fd050501165. 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/3drxjrMX1uJ0qtoGSodwrZ.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/3drxjrMX1uJ0qtoGSodwrZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be7f1d27cbea419635d5865b8a3c187466ed739bb5f3d28e205c4d28c59e55d. 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/1amdIQTQybM2YzfElKNA4U.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/1amdIQTQybM2YzfElKNA4U.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cf6201de84a51e8cbb9a72d601aa10676acc40713355547375f098840ac3c2. 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/0m9xFMP8N2FT2hDRGBlFct.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/0m9xFMP8N2FT2hDRGBlFct.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be7f1d27cbea419635d5865b8a3c187466ed739bb5f3d28e205c4d28c59e55d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4GGK3tSQSGRGk9kFR9NNGF.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/4GGK3tSQSGRGk9kFR9NNGF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be7f1d27cbea419635d5865b8a3c187466ed739bb5f3d28e205c4d28c59e55d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3Fhvp05ae1xW7dSMlKetSI.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/3Fhvp05ae1xW7dSMlKetSI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be7f1d27cbea419635d5865b8a3c187466ed739bb5f3d28e205c4d28c59e55d. 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/7iAfQeF3aNmy1WXxNyQtP9.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/7iAfQeF3aNmy1WXxNyQtP9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5895f1cbadbd7ee7c26ab9ff289d7d89910d853aa08e3675db5eaf20aa0b62e9. 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/67DqcqdDQYk86nedMnbqEW.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/67DqcqdDQYk86nedMnbqEW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0bb1a7f5de84e4f83f95dd124fe0c9a4220ca63b1007db4db2e39862f2c147. 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/7oni2eHehcmPbbouOGBJBw.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/7oni2eHehcmPbbouOGBJBw.
{"copyright_id":"0xab552a2bac8e783bc84ac29235b50a933730a153280c46fd0fec1184729b4b5a","isrc":"TCAHL2339162","name":"Make Believe","registered_at":"2026-06-09T10:28:22Z","spotify_id":"1euBgb7sWnbBNFQlEuHw4F","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab552a2bac8e783bc84ac29235b50a933730a153280c46fd0fec1184729b4b5a. 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/1euBgb7sWnbBNFQlEuHw4F.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/1euBgb7sWnbBNFQlEuHw4F.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5e38c144a4306c10e4d25d9a0a81b2d9fbb4525d42d71ed0fcd4fbe5fc8396. 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/4yv5W4NDxdaZyu5qa7vxI2.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/4yv5W4NDxdaZyu5qa7vxI2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28510edc7af6ea566b811999547b5a1e9a8fa6ebf99d4c466800ed4ec558ece. 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/6PeE64hS00ZPBiKhewLXtE.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/6PeE64hS00ZPBiKhewLXtE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb538da63557a2a18df893c2146a0e451e6fc7147f4dc69afee458c07d454f5bf. 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/0ybTysZ1qJTtDPlwmBlVSA.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/0ybTysZ1qJTtDPlwmBlVSA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c03306c161387023f417b9e4e34c5e6b6a43ef8a7e574422adc152efa073d01. 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/5XJx3WV0MX1WEdaTSDe4S7.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/5XJx3WV0MX1WEdaTSDe4S7.
{"copyright_id":"0xf3dcfb3912b480676a98d1df7244e02ccc4cec05d0628a23ecf4d8a75214a92d","isrc":"TCAHL2339282","name":"Eigen Vergif","registered_at":"2026-06-08T10:16:38Z","spotify_id":"23btGcvFCPDGLCdefVIROk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3dcfb3912b480676a98d1df7244e02ccc4cec05d0628a23ecf4d8a75214a92d. 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/23btGcvFCPDGLCdefVIROk.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/23btGcvFCPDGLCdefVIROk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31bf0219a64d7892cec881557e95a6b885010be7835c222c396fa34e1b291439. 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/196q2VK1VCn9gHMhYfaQxl.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/196q2VK1VCn9gHMhYfaQxl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54609206e3cb1c23e86830c585c331c76060f97b0f3a28f97405f020f17123c. 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/566E5nOZTpN8vRPbJKbWsc.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/566E5nOZTpN8vRPbJKbWsc.
{"copyright_id":"0xecba3a4ea834a6143bffff58fd827786aedf7554de3a814574048af3844c9cf4","isrc":"NLG662300554","name":"Blijkbaar (met Kaya Imani)","registered_at":"2026-06-05T23:11:38Z","spotify_id":"0tox9lXe3hdarVUIwUhP5V","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecba3a4ea834a6143bffff58fd827786aedf7554de3a814574048af3844c9cf4. 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/0tox9lXe3hdarVUIwUhP5V.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/0tox9lXe3hdarVUIwUhP5V.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31bf0219a64d7892cec881557e95a6b885010be7835c222c396fa34e1b291439. 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/4LGPxvGv4ZI5Po4ukuiGm8.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/4LGPxvGv4ZI5Po4ukuiGm8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3950df6be330d0969493522ba7097b070c8f7c460343108ae52572a563e7e625. 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/3ifYPq32Q8yRjku3hCV9ft.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/3ifYPq32Q8yRjku3hCV9ft.