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 0x4da97b84c6957c22a0485bdc7b4acb8493d6ec143db9ef0a02cd0c75c2aad359. 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/76c2ff37-58da-423f-bf44-0be7ec989118.json and https://artists.proofprofile.net/proofs/artist/76c2ff37-58da-423f-bf44-0be7ec989118.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xaadccb87fd227f42d655ab042b3b3a27d33638f72987a0ffd742ffc5e7e69c0a","isrc":"ARFSB0700945","name":"Primavera 0 - Remasterizado 2007","registered_at":"2026-06-04T06:40:13Z","spotify_id":"2V4aobDkpJD7e36J8xPCL6","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 0xaadccb87fd227f42d655ab042b3b3a27d33638f72987a0ffd742ffc5e7e69c0a. 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/2V4aobDkpJD7e36J8xPCL6.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/2V4aobDkpJD7e36J8xPCL6.
{"copyright_id":"0xae2fec4d40d2ddcfa82c4127c13a6e311b1bd39647828a5fb5b01db0bd327f59","isrc":"ARFSB0700947","name":"Luna Roja - Remasterizado 2007","registered_at":"2026-06-04T07:50:57Z","spotify_id":"0MHENKo7srNABaALyzrYlX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2fec4d40d2ddcfa82c4127c13a6e311b1bd39647828a5fb5b01db0bd327f59. 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/0MHENKo7srNABaALyzrYlX.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/0MHENKo7srNABaALyzrYlX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa977e6c008c7ff5f0895c46aaaf994c4eb1447672d73e616229a213002e7b4aa. 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/46idz0a11hAT5Yjs8EpSiE.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/46idz0a11hAT5Yjs8EpSiE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068ac7fc2f686b6f6c810bee45f890fc2624ef9f292d08aa44bdb2a981b23f6e. 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/2k87JEjI4XnuQAjaBkSkT3.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/2k87JEjI4XnuQAjaBkSkT3.
Cinco Décadas de Rock Argentino: 1966 - 2016
{"copyright_id":"0x0548b49bfc2c003dbcf3f4ad4796f8ecb22a5f78a394acd387cb552adbb30ce8","isrc":"ARF109902696","name":"En la Ciudad de la Furia","registered_at":"2026-06-18T02:31:20Z","spotify_id":"6TCiVp3ojdEHYxsDdzvr8f","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0548b49bfc2c003dbcf3f4ad4796f8ecb22a5f78a394acd387cb552adbb30ce8. 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/6TCiVp3ojdEHYxsDdzvr8f.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/6TCiVp3ojdEHYxsDdzvr8f.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cf62a9ab1b46a311db8421346695723ed98e76c2774ab2f357dc590767c72f. 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/6u7ACsDSlpPNxBY1jSDlxH.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/6u7ACsDSlpPNxBY1jSDlxH.
Rock de Mi Ciudad - Rockin' Buenos Aires
{"copyright_id":"0x0548b49bfc2c003dbcf3f4ad4796f8ecb22a5f78a394acd387cb552adbb30ce8","isrc":"ARF109902696","name":"En la Ciudad de la Furia","registered_at":"2026-06-18T02:31:20Z","spotify_id":"5LUnAK6vlTEANEQRtedWY3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0548b49bfc2c003dbcf3f4ad4796f8ecb22a5f78a394acd387cb552adbb30ce8. 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/5LUnAK6vlTEANEQRtedWY3.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/5LUnAK6vlTEANEQRtedWY3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ca79b6e3b9f1160221fea37ed1b071a2e8818811db8089498409703c69e4a4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/705EAixPgtG7PGW0HnPDal.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/705EAixPgtG7PGW0HnPDal.
Cinco Décadas de Rock Argentino: Segunda Década 1976 - 1986
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ca79b6e3b9f1160221fea37ed1b071a2e8818811db8089498409703c69e4a4. 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/5pMHCJEsEq7ausgbEj2Dv4.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/5pMHCJEsEq7ausgbEj2Dv4.
{"copyright_id":"0x3353fc6264a153d8c8098dd905e2b8174005dfab9edbe152b37c24d0eeaeda48","isrc":"ARFSB0700971","name":"Trátame Suavemente - Remasterizado 2007","registered_at":"2026-06-08T12:44:55Z","spotify_id":"4rfc8ZsJM55RNDT96X0RYU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3353fc6264a153d8c8098dd905e2b8174005dfab9edbe152b37c24d0eeaeda48. 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/4rfc8ZsJM55RNDT96X0RYU.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/4rfc8ZsJM55RNDT96X0RYU.
{"copyright_id":"0xdc54db020bcd9391e1f6230d267e7660e5e77c5bf2fde0392079b0dc181b76f3","isrc":"ARFSB0600305","name":"De Música Ligera - Edit Version","registered_at":"2026-06-05T08:58:20Z","spotify_id":"1doPsH0BviewqqpHdcjtjh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc54db020bcd9391e1f6230d267e7660e5e77c5bf2fde0392079b0dc181b76f3. 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/1doPsH0BviewqqpHdcjtjh.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/1doPsH0BviewqqpHdcjtjh.
Cinco Décadas de Rock Argentino: Tercera Década 1986 - 1996
{"copyright_id":"0x0548b49bfc2c003dbcf3f4ad4796f8ecb22a5f78a394acd387cb552adbb30ce8","isrc":"ARF109902696","name":"En la Ciudad de la Furia","registered_at":"2026-06-18T02:31:20Z","spotify_id":"0VuNRN2z9cbI5WkeFHeq5K","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0548b49bfc2c003dbcf3f4ad4796f8ecb22a5f78a394acd387cb552adbb30ce8. 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/0VuNRN2z9cbI5WkeFHeq5K.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/0VuNRN2z9cbI5WkeFHeq5K.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4b941a57848bf738871d608230bce0a32c0eb5b85fddc33a7954f9db036219. 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/6fmJp04FJmUlVBa8PABQal.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/6fmJp04FJmUlVBa8PABQal.
En la Ciudad de la Furia - En Vivo Me Verás Volver Gira 2007
Cinco Décadas de Rock Argentino: Quinta Década 2006 - 2016
{"copyright_id":"0xa51718ced5ee5a9847fe6f4e1f35c0b4f4830ababd0dba08afacc87cc810f0ac","isrc":"ARFSB0800742","name":"En la Ciudad de la Furia - En Vivo Me Verás Volver Gira 2007","registered_at":"2026-06-11T09:39:16Z","spotify_id":"0SPKUyeyvFRYq0iJMg4gFt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51718ced5ee5a9847fe6f4e1f35c0b4f4830ababd0dba08afacc87cc810f0ac. 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/0SPKUyeyvFRYq0iJMg4gFt.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/0SPKUyeyvFRYq0iJMg4gFt.
La Vida Inmoral de la Pareja Ideal (Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1398d3cd9e743249d79599828fd2256ae556a1504500ece3d5610f36507dbc0. 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/3zGMqdKkkfDdaCJpK7dL0o.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/3zGMqdKkkfDdaCJpK7dL0o.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa977e6c008c7ff5f0895c46aaaf994c4eb1447672d73e616229a213002e7b4aa. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1ovqkKM5Mz7cpOM4ZUvcp7.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/1ovqkKM5Mz7cpOM4ZUvcp7.
{"copyright_id":"0x6cc16eca1ced4ff2bc9dfc4373913dc86ad92abbf2d83a17c32532d018e1f0b8","isrc":"ARF109400153","name":"Trátame Suavemente","registered_at":"2026-06-10T19:13:23Z","spotify_id":"4mt5lPTA0f3mPsFvIBIIGQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc16eca1ced4ff2bc9dfc4373913dc86ad92abbf2d83a17c32532d018e1f0b8. 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/4mt5lPTA0f3mPsFvIBIIGQ.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/4mt5lPTA0f3mPsFvIBIIGQ.