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 0x466b6abfb6b6991b8a1948301e9d5358f48abdbcfdba27b0f1e914c7121bdc85. 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/889b5793-c8c1-4634-911b-7c141ed3b0b9.json and https://artists.proofprofile.net/proofs/artist/889b5793-c8c1-4634-911b-7c141ed3b0b9.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 0xc9cbc8117b5635e947a733db55f4856ea472636ba84cfd303584ca042b6ed14f. 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/73ZstMbTmOYuT7QtIdg5G1.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/73ZstMbTmOYuT7QtIdg5G1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c36c85d887b6199b8e1d78b7b49b7b1a4c834a95762375715f337595d452bd. 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/2dVAFcKzQAXBbDPkjfNqRa.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/2dVAFcKzQAXBbDPkjfNqRa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb470fa868a6e885f51c7fb813607b0b9ac20a3b2295baa50b0723fd376e9e7b1. 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/6uBWMoDZITSfEicLPuMW8l.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/6uBWMoDZITSfEicLPuMW8l.
{"copyright_id":"0xbb9a065aabc6380035d930c48d232c365dd7130e30fd58550f48820ddcf28a10","isrc":"US5TA2100047","name":"all the things you wanted","registered_at":"2026-06-04T14:09:50Z","spotify_id":"52whWw3KoBFHATz8sHoPPU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9a065aabc6380035d930c48d232c365dd7130e30fd58550f48820ddcf28a10. 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/52whWw3KoBFHATz8sHoPPU.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/52whWw3KoBFHATz8sHoPPU.
{"copyright_id":"0xd0e38b0aaa45cef042b62f007decf1671c0d9de2f36f87a70c44a4a68ae035b2","isrc":"US5TA2100048","name":"from the ending of a tragedy","registered_at":"2026-06-04T14:31:48Z","spotify_id":"7rfyK5CqNvDHC4EtZ0hfuE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e38b0aaa45cef042b62f007decf1671c0d9de2f36f87a70c44a4a68ae035b2. 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/7rfyK5CqNvDHC4EtZ0hfuE.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/7rfyK5CqNvDHC4EtZ0hfuE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aacc2ab11df15c2b6eab631cd7a716614b833ed1ca111e6200796252fa0c595. 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/5X4AFw9JSedXacca9Y5bMO.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/5X4AFw9JSedXacca9Y5bMO.
{"copyright_id":"0x24cbc1e00737471e02ff2c8b203d2f87b9ded4cfc8870061cee80853c5c442ba","isrc":"US5TA2100050","name":"LOVE PARADE","registered_at":"2026-06-04T12:59:50Z","spotify_id":"3cppKGBLYhmYU9r5APbIwa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cbc1e00737471e02ff2c8b203d2f87b9ded4cfc8870061cee80853c5c442ba. 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/3cppKGBLYhmYU9r5APbIwa.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/3cppKGBLYhmYU9r5APbIwa.
The Book of Us : Gluon - Nothing can tear us apart
{"copyright_id":"0xd7b0eff4e315b0b3bffd286ea76b6a64f2999e9f12cff0cca3225c2146669001","isrc":"US5TA2000089","name":"Landing -Intro- (with DENIMALZ 3)","registered_at":"2026-06-10T00:42:28Z","spotify_id":"4Ls9cIx4r0OV53yrFZd2aO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b0eff4e315b0b3bffd286ea76b6a64f2999e9f12cff0cca3225c2146669001. 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/4Ls9cIx4r0OV53yrFZd2aO.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/4Ls9cIx4r0OV53yrFZd2aO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cdc11f6f2bcd7c745474ac966ca1e6fea35a6e98b004d3990cffcdd54f8dfc. 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/6qLjAAxNEoJvZJiAREQubY.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/6qLjAAxNEoJvZJiAREQubY.
{"copyright_id":"0xac2080ce230e8bbc12e5866ff6c5b6d8a1131a61054fbe88942156c0a801bff2","isrc":"US5TA2000091","name":"Ocean -Interlude 1- (with DENIMALZ 3)","registered_at":"2026-06-09T05:48:33Z","spotify_id":"2OPNLqgZPod60PYBTvSx5t","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2080ce230e8bbc12e5866ff6c5b6d8a1131a61054fbe88942156c0a801bff2. 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/2OPNLqgZPod60PYBTvSx5t.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/2OPNLqgZPod60PYBTvSx5t.
{"copyright_id":"0x68f1cea23a5a85533631f69c381ba4d24e3d18be0c115de4110b6193b3c579e2","isrc":"US5TA2000092","name":"Where the sea sleeps","registered_at":"2026-06-04T07:17:51Z","spotify_id":"6zJRgVg9A2EzkZRRzLx3eB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f1cea23a5a85533631f69c381ba4d24e3d18be0c115de4110b6193b3c579e2. 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/6zJRgVg9A2EzkZRRzLx3eB.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/6zJRgVg9A2EzkZRRzLx3eB.
{"copyright_id":"0x954146a63fb48c047c1f529e8948c714a020af8ffd1d9b01f7edee32b5ea87f4","isrc":"US5TA2000093","name":"Forest -Interlude 2- (with DENIMALZ 3)","registered_at":"2026-06-10T01:37:18Z","spotify_id":"7ioFd6Ov85NWT4UTBQ9R5K","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954146a63fb48c047c1f529e8948c714a020af8ffd1d9b01f7edee32b5ea87f4. 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/7ioFd6Ov85NWT4UTBQ9R5K.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/7ioFd6Ov85NWT4UTBQ9R5K.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9432224aacc2d9109739c8db71cd939fb018fb46369437e9d7c975236ba129. 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/0dGI1GRr0UAnkPKcWn7QbI.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/0dGI1GRr0UAnkPKcWn7QbI.
To be continued -Outro- (Sung by DENIMALZ 3)
{"copyright_id":"0x2672427a2f3012ff6c64a760cf8da43f0480645b7c70cab10aa66491b4911c5a","isrc":"US5TA2000095","name":"To be continued -Outro- (Sung by DENIMALZ 3)","registered_at":"2026-06-09T05:48:08Z","spotify_id":"2LATaUAAFr9tXGA0bLofID","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2672427a2f3012ff6c64a760cf8da43f0480645b7c70cab10aa66491b4911c5a. 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/2LATaUAAFr9tXGA0bLofID.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/2LATaUAAFr9tXGA0bLofID.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61b0624e0496e56f4ba8f340376f40547a0483f22d4012e0f3bdb1e160a2cdb. 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/18xXVZwosvArMOJOs7wd6S.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/18xXVZwosvArMOJOs7wd6S.
{"copyright_id":"0x9edb8b1fd00cef1007b27f2d9775999cd479a0b2ccddbd53d7aa8dd80c7a9a48","isrc":"KRF842100002","name":"so this is love - Instrumental","registered_at":"2026-06-20T21:11:29Z","spotify_id":"01ucnOP34WeMQXOYmzbf8v","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edb8b1fd00cef1007b27f2d9775999cd479a0b2ccddbd53d7aa8dd80c7a9a48. 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/01ucnOP34WeMQXOYmzbf8v.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/01ucnOP34WeMQXOYmzbf8v.