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 0x1dbc749defddcc0b03d77f918051fd25f9dd62988be0a2afacb2b0108b2c2423. 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/779188cf-63a9-4757-9960-b2dd5ca26cbb.json and https://artists.proofprofile.net/proofs/artist/779188cf-63a9-4757-9960-b2dd5ca26cbb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xf40bf0a162db50a0897e33b52bf8d41a26d289bfba17e27cc43dd7c613caec64","isrc":"USUG12004785","name":"CLIQUE (with Younès & Leone)","registered_at":"2026-06-08T14:19:43Z","spotify_id":"5FiWMFXbQAHFucVzlFg9O1","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 0xf40bf0a162db50a0897e33b52bf8d41a26d289bfba17e27cc43dd7c613caec64. 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/5FiWMFXbQAHFucVzlFg9O1.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/5FiWMFXbQAHFucVzlFg9O1.
{"copyright_id":"0x176f3dc29bb06fa273f7d3daa2a4a84def91aa61deecefd04cf5448414e054e9","isrc":"FRUM72100757","name":"PICK IT UP","registered_at":"2026-06-08T05:39:46Z","spotify_id":"6Dh33vO0kakIh4cdKXTElm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176f3dc29bb06fa273f7d3daa2a4a84def91aa61deecefd04cf5448414e054e9. 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/6Dh33vO0kakIh4cdKXTElm.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/6Dh33vO0kakIh4cdKXTElm.
IT IS NOT A MISTAKE IF IT GOES IN CIRCLE
{"copyright_id":"0x44ef8a18079883727a5fc35d6914400eb276cdcfe51c8a05ec98ca17abe78e3c","isrc":"FR9W12141226","name":"Bad Boys Good Sons","registered_at":"2026-06-04T07:16:15Z","spotify_id":"6pp6EklNKsnXHTWy6uO1l8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ef8a18079883727a5fc35d6914400eb276cdcfe51c8a05ec98ca17abe78e3c. 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/6pp6EklNKsnXHTWy6uO1l8.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/6pp6EklNKsnXHTWy6uO1l8.
{"copyright_id":"0xe4df7d8300c76c966173c38220a66d78452eaefa4c5c2de0e5dda51a9a8d3bb3","isrc":"USUG12004786","name":"FAMILY BUSINESS","registered_at":"2026-06-18T16:56:21Z","spotify_id":"0vZxwUEkJCz00I5gUHt1sq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4df7d8300c76c966173c38220a66d78452eaefa4c5c2de0e5dda51a9a8d3bb3. 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/0vZxwUEkJCz00I5gUHt1sq.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/0vZxwUEkJCz00I5gUHt1sq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40bf0a162db50a0897e33b52bf8d41a26d289bfba17e27cc43dd7c613caec64. 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/7srJF3WPp8v1vg6xL6ojpT.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/7srJF3WPp8v1vg6xL6ojpT.
{"copyright_id":"0x68c52fc3df7be4fa31b0434e74cbbff14e64a6f9235d19180b3bb5a66ec55a7a","isrc":"USUG12100347","name":"NUMBER ONE","registered_at":"2026-06-08T20:50:43Z","spotify_id":"6dex6wNXbsOvixnJH2IsPm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c52fc3df7be4fa31b0434e74cbbff14e64a6f9235d19180b3bb5a66ec55a7a. 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/6dex6wNXbsOvixnJH2IsPm.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/6dex6wNXbsOvixnJH2IsPm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17555512497b6e7698a2b074beb44a764cb09bca4242fe4a000b0af7dfd4a153. 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/30HZnvTd7WrsEBtd9Nm8Jt.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/30HZnvTd7WrsEBtd9Nm8Jt.
{"copyright_id":"0x88cb2f625eb1988206a19323601abb16ce7823d885063e4c1df75ba30e3dd9f6","isrc":"USUG12100348","name":"BIZ IN THE TRAP","registered_at":"2026-06-19T12:17:38Z","spotify_id":"0kbAFmuMbzhrWFefmSVuVw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88cb2f625eb1988206a19323601abb16ce7823d885063e4c1df75ba30e3dd9f6. 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/0kbAFmuMbzhrWFefmSVuVw.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/0kbAFmuMbzhrWFefmSVuVw.