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 0x13837bf5a105565602e1aeb785b608a8b59f9bfcc1e6cbf0a8c3357d59570f98. 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/ab523d8c-8efa-4692-8838-17049320bbd3.json and https://artists.proofprofile.net/proofs/artist/ab523d8c-8efa-4692-8838-17049320bbd3.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 0xd9c0873239646a375958204788e7820750d36c756c9f78f20a2ce200195f1189. 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/28WYHiLShsQh3NEV5FfhsW.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/28WYHiLShsQh3NEV5FfhsW.
{"copyright_id":"0x2e0deaf12c4e68e0b7ec2ab1d8671b9be1f2a85ad667b14c00b94e6531ee2d32","isrc":"MXUM62000004","name":"Canción Sin Miedo - Versión El Palomar","registered_at":"2026-06-04T08:31:57Z","spotify_id":"2rnARNiqqnVK8WnEQlXh1a","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0deaf12c4e68e0b7ec2ab1d8671b9be1f2a85ad667b14c00b94e6531ee2d32. 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/2rnARNiqqnVK8WnEQlXh1a.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/2rnARNiqqnVK8WnEQlXh1a.
{"copyright_id":"0x5b5e8201e429ff38206d9ab35abfb050eb7972fc1e4c2e6ca6567f81e9a550bc","isrc":"MXUM72300745","name":"Corazón de Ave","registered_at":"2026-06-28T20:24:29Z","spotify_id":"4MSHxsXUGG8j9Ejq72ahcm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5e8201e429ff38206d9ab35abfb050eb7972fc1e4c2e6ca6567f81e9a550bc. 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/4MSHxsXUGG8j9Ejq72ahcm.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/4MSHxsXUGG8j9Ejq72ahcm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5e8201e429ff38206d9ab35abfb050eb7972fc1e4c2e6ca6567f81e9a550bc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/12v7IZ76cLcvaFjJ94Fogp.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/12v7IZ76cLcvaFjJ94Fogp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b8c5b80f405cd0968c21bc34f953eaf0165e92adb169c1f1d330402bd9369d. 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/4AkmaKAnqPtVB9Z3rgBBVP.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/4AkmaKAnqPtVB9Z3rgBBVP.
Solas Ya No Más - Canción Sin Miedo (Live)
Solas Ya No Más - Canción Sin Miedo - Live
{"copyright_id":"0xdda770d289c5622cb5f38c43de57eda7620e31eefaa8ac6707be8e33d3a30204","isrc":"MXUM72400025","name":"¿Quién Cuida al Pueblo?","registered_at":"2026-06-10T20:12:12Z","spotify_id":"640dyQsLPdiLI4vY16mq3D","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda770d289c5622cb5f38c43de57eda7620e31eefaa8ac6707be8e33d3a30204. 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/640dyQsLPdiLI4vY16mq3D.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/640dyQsLPdiLI4vY16mq3D.
Canción Sin Miedo, París 2023 (En Vivo Desde Paris 2023)
Canción Sin Miedo, París 2023 - En Vivo Desde Paris 2023
Black Panther: Wakanda Forever - Music From and Inspired By
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b24007be6f6521bd096d12c89d0d44db20ca5e66e78463cc27c9413d1276501. 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/5UaiWpx39E60GAsoAtICoV.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/5UaiWpx39E60GAsoAtICoV.
Sirens - From "Black Panther: Wakanda Forever"/Score
{"copyright_id":"0x4d3cb0506403a7a99341be217f89168e81d84c7023b4eb1acd2db3d988dade6a","isrc":"USHR12244867","name":"Sirens - From \"Black Panther: Wakanda Forever\"/Score","registered_at":"2026-06-18T13:41:37Z","spotify_id":"6KMHaapqzFU9BKkyaSRJYu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3cb0506403a7a99341be217f89168e81d84c7023b4eb1acd2db3d988dade6a. 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/6KMHaapqzFU9BKkyaSRJYu.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/6KMHaapqzFU9BKkyaSRJYu.
Banda Femenil Regional "Mujeres del Viento Florido"
{"copyright_id":"0x7e2e2d09679e7dcd5cf4e2c7c239497e12b42fd1e4330ac428f6b7eeadedaec3","isrc":"ES71G2217463","name":"Canción del Desvelado","registered_at":"2026-06-18T02:37:11Z","spotify_id":"7pcLaNk10k2MdkpmmrCoFg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2e2d09679e7dcd5cf4e2c7c239497e12b42fd1e4330ac428f6b7eeadedaec3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7pcLaNk10k2MdkpmmrCoFg.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/7pcLaNk10k2MdkpmmrCoFg.
Canción Sin Miedo - Versión Ayuujk (Tlahuiltoltepec) / Español
Canción Sin Miedo [Versión Ayuujk (Tlahuiltoltepec) / Español]
{"copyright_id":"0x166020f8ea49945e8b15da8d51af89017d9b36dde78d419dfd1c11662afac998","isrc":"QZGLM2287315","name":"Canción Sin Miedo - Versión Ayuujk (Tlahuiltoltepec) / Español","registered_at":"2026-06-07T23:18:49Z","spotify_id":"5VIDgMv9x9PfEHK9I1ukEA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166020f8ea49945e8b15da8d51af89017d9b36dde78d419dfd1c11662afac998. 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/5VIDgMv9x9PfEHK9I1ukEA.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/5VIDgMv9x9PfEHK9I1ukEA.
{"copyright_id":"0x7e2e2d09679e7dcd5cf4e2c7c239497e12b42fd1e4330ac428f6b7eeadedaec3","isrc":"ES71G2217463","name":"Canción del Desvelado","registered_at":"2026-06-18T02:37:11Z","spotify_id":"4q8FhxnzA40R0DJN7afwjG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2e2d09679e7dcd5cf4e2c7c239497e12b42fd1e4330ac428f6b7eeadedaec3. 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/4q8FhxnzA40R0DJN7afwjG.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/4q8FhxnzA40R0DJN7afwjG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c0873239646a375958204788e7820750d36c756c9f78f20a2ce200195f1189. 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/2ygHIGem2Ar81cdrJoeylG.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/2ygHIGem2Ar81cdrJoeylG.
{"copyright_id":"0x542c3b3556ccf93053fd5996c3c131aefed5916d1f0a966ee06b736a6cf6b9f1","isrc":"MXF172023321","name":"Yo Vengo a Ofrecer Mi Corazón","registered_at":"2026-06-05T21:35:56Z","spotify_id":"4Sxef0ijZwETFvL7p6qVs8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542c3b3556ccf93053fd5996c3c131aefed5916d1f0a966ee06b736a6cf6b9f1. 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/4Sxef0ijZwETFvL7p6qVs8.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/4Sxef0ijZwETFvL7p6qVs8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e2962a7e1fd1ee9f1c58306a809ea4bf2243a63deb57e61b5c39e878e50c2a. 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/401MOEyrDSMGmm6oOWQYuC.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/401MOEyrDSMGmm6oOWQYuC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec7ca32713a2f6db858e1bd37a8936aa6805f5302acf0b7609816c1a6466535. 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/1aKXlbI7LrDSRGgye7B2J1.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/1aKXlbI7LrDSRGgye7B2J1.