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 0xbc72469c404e84cef375487e82dcf56acba509a4b37abef54a63a9f506ded813. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84dad8a0-90de-4e76-a1a9-6b5bdddfe9df.json and https://artists.proofprofile.net/proofs/artist/84dad8a0-90de-4e76-a1a9-6b5bdddfe9df.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 0x4967b7545367916adb34ada0c01c830c285411943dfdb799d61b0f16a4d3dff5. 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/3nyFd5lE8CeupXcfIPCG4X.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/3nyFd5lE8CeupXcfIPCG4X.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd980b84ca1e2def1c44cb70a7c74d47e4757f1548cc6aa078b5644a78f02976d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2698etWGVMThbXgI2T0aCX.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/2698etWGVMThbXgI2T0aCX.
Cementerio de Amapolas - 2021 Remastered
{"copyright_id":"0x41c1dcbe42dafa2be4951c2c375a376692f3c2a6b6b94c73f58d3456af1f6ab1","isrc":"QZNJV2135983","name":"Cementerio de Amapolas - 2021 Remastered","registered_at":"2026-06-11T16:43:41Z","spotify_id":"6u8EayiIHyLz2BWeq57opC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c1dcbe42dafa2be4951c2c375a376692f3c2a6b6b94c73f58d3456af1f6ab1. 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/6u8EayiIHyLz2BWeq57opC.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/6u8EayiIHyLz2BWeq57opC.
{"copyright_id":"0x41c1dcbe42dafa2be4951c2c375a376692f3c2a6b6b94c73f58d3456af1f6ab1","isrc":"QZNJV2135983","name":"Cementerio de Amapolas","registered_at":"2026-06-11T16:43:41Z","spotify_id":"3zjd6ByRmFXZ6MCd5G90xF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c1dcbe42dafa2be4951c2c375a376692f3c2a6b6b94c73f58d3456af1f6ab1. 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/3zjd6ByRmFXZ6MCd5G90xF.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/3zjd6ByRmFXZ6MCd5G90xF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05fbdb22ab6fe6178e4230e2e2877dc274d3ee8dd213568618c9a279489ee6b. 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/5fIYgjltXTWZ5edHz6UYUK.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/5fIYgjltXTWZ5edHz6UYUK.