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 0xdbe0e7656c0830baa4a85abbc82826c3f4d0fb618e2c33e5faa91843b7015c69. 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/46d08ed7-0f17-4b50-8961-0a810e8a4f00.json and https://artists.proofprofile.net/proofs/artist/46d08ed7-0f17-4b50-8961-0a810e8a4f00.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 0x578c4c5f9bdb47736071c624b75293321d07907d87b42434d908aebf7abdb793. 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/2mYXLOqZImUVzUz1NJg81A.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/2mYXLOqZImUVzUz1NJg81A.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6ffbb03ef99cc97cab0b58b2e346565314ca84ee734eb4dbf175314de98a3a. 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/2ph0Fi62X116yZfdc8BMNe.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/2ph0Fi62X116yZfdc8BMNe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714062bd2e8fa2384e085233993c606ce9ef0b27142f6b6b4a2c5d9445549e75. 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/3yfUMoGcd0i7iPOoYetOZh.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/3yfUMoGcd0i7iPOoYetOZh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44941e4a008166ef37bf2bb351e770a4f88251ba664824c256aa2f412424d536. 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/4rnAmsEtLQes11CRX3FS1A.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/4rnAmsEtLQes11CRX3FS1A.
{"copyright_id":"0x6da9150f43bf7cdc63d2d0b91f60c67b4d544ee68cb8b2c9b0c9ad9d333752cf","isrc":"ES6172222239","name":"Tan cerquita de mi","registered_at":"2026-06-09T10:28:38Z","spotify_id":"5x9wX08gqBL5tbAxDFhuHC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da9150f43bf7cdc63d2d0b91f60c67b4d544ee68cb8b2c9b0c9ad9d333752cf. 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/5x9wX08gqBL5tbAxDFhuHC.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/5x9wX08gqBL5tbAxDFhuHC.
{"copyright_id":"0x4c8a3b54fd0b27f4e18f61ad7a9bcd18379e1e59437c2ddf48bbd9c1cf5e6764","isrc":"ES6172222243","name":"Como el agua del mar","registered_at":"2026-06-18T05:16:06Z","spotify_id":"7ge7dwJBVm4WEphvke0GjY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8a3b54fd0b27f4e18f61ad7a9bcd18379e1e59437c2ddf48bbd9c1cf5e6764. 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/7ge7dwJBVm4WEphvke0GjY.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/7ge7dwJBVm4WEphvke0GjY.
{"copyright_id":"0xcab97b42d1bb78db916301eaefc687a04cb651826b19a14a348ee8e83b3787d6","isrc":"ES6172222240","name":"Xocolate blanco","registered_at":"2026-06-07T03:05:29Z","spotify_id":"2GUIzh2shPDNzccfEnSkPI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab97b42d1bb78db916301eaefc687a04cb651826b19a14a348ee8e83b3787d6. 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/2GUIzh2shPDNzccfEnSkPI.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/2GUIzh2shPDNzccfEnSkPI.
{"copyright_id":"0x055da4401d020709ea8908bc783cb525f343cc9913cc3c00986e66df3fbfc6c5","isrc":"ES6172222238","name":"A los cuatro vientos","registered_at":"2026-06-07T21:50:22Z","spotify_id":"2iXsMFKJivqdn1S9tGwrnt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055da4401d020709ea8908bc783cb525f343cc9913cc3c00986e66df3fbfc6c5. 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/2iXsMFKJivqdn1S9tGwrnt.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/2iXsMFKJivqdn1S9tGwrnt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ecb426ea09e44c2811207e57b27d2c7e268f1cffc568f09305a0b20ace61e9. 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/4J1QEbvo0Il7K0gpQvMMlK.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/4J1QEbvo0Il7K0gpQvMMlK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dce9988da56db4a4f1e885baa61b5436ae9377ab4a75d8e9ec003f1f7834cc7. 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/0ddX3AiUi5OdgAOG1WBS7X.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/0ddX3AiUi5OdgAOG1WBS7X.
{"copyright_id":"0x7f0f329c40479671d47cdf6b6baab0eba43d5cfe3845875a599a44d3bdad052e","isrc":"BK4DA2309003","name":"HAYA PAZ","registered_at":"2026-06-02T01:06:41Z","spotify_id":"5zXEkcELqieHDlb8MEY5Mr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0f329c40479671d47cdf6b6baab0eba43d5cfe3845875a599a44d3bdad052e. 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/5zXEkcELqieHDlb8MEY5Mr.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/5zXEkcELqieHDlb8MEY5Mr.
{"copyright_id":"0x6da9150f43bf7cdc63d2d0b91f60c67b4d544ee68cb8b2c9b0c9ad9d333752cf","isrc":"ES6172222239","name":"Tan cerquita de mi","registered_at":"2026-06-09T10:28:38Z","spotify_id":"3FwSqtMiMjzTddjYGUysOV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da9150f43bf7cdc63d2d0b91f60c67b4d544ee68cb8b2c9b0c9ad9d333752cf. 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/3FwSqtMiMjzTddjYGUysOV.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/3FwSqtMiMjzTddjYGUysOV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6ffbb03ef99cc97cab0b58b2e346565314ca84ee734eb4dbf175314de98a3a. 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/0udQRv5XxKZEj7ZqixB9un.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/0udQRv5XxKZEj7ZqixB9un.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab97b42d1bb78db916301eaefc687a04cb651826b19a14a348ee8e83b3787d6. 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/2bnmIbsGVBeb0gHWjX1mo3.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/2bnmIbsGVBeb0gHWjX1mo3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055da4401d020709ea8908bc783cb525f343cc9913cc3c00986e66df3fbfc6c5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5m1jh3jsEKQOgwbXMaPf7H.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/5m1jh3jsEKQOgwbXMaPf7H.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176545c772286f9ed71ce9d08399f361e920b8db5d870013291556663bd1974e. 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/0yVqxGD8JA86xXJJy4S839.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/0yVqxGD8JA86xXJJy4S839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788148a55c6dfa3c20f28c345de710a0b1e778836b502e686d550ec2128dc28a. 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/2Y2HIJnqMHxwOggHrkn5uD.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/2Y2HIJnqMHxwOggHrkn5uD.
{"copyright_id":"0x18ff34c4ccab861fef626f71c116e0c8491affc6e096d9baa997b0c060d918d2","isrc":"ES6172424114","name":"Todo un caballero","registered_at":"2026-06-10T07:36:40Z","spotify_id":"2YMgioDWpD9iNKwpkeoI99","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ff34c4ccab861fef626f71c116e0c8491affc6e096d9baa997b0c060d918d2. 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/2YMgioDWpD9iNKwpkeoI99.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/2YMgioDWpD9iNKwpkeoI99.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe406f49b6efc0a4e692a258993e3e7d156bc9b93641891e53d60a0ac53524be1. 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/2ELXpsUEwQ0MRcSkilTCmV.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/2ELXpsUEwQ0MRcSkilTCmV.
{"copyright_id":"0x1b0dc53abe745931cd378abfdd57a466c70ae679402f3a59b052b102a95b929a","isrc":"ES6172525001","name":"Quítate el sombrero","registered_at":"2026-06-18T07:25:58Z","spotify_id":"0Wzqlk1H9facS6hjzRDACm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0dc53abe745931cd378abfdd57a466c70ae679402f3a59b052b102a95b929a. 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/0Wzqlk1H9facS6hjzRDACm.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/0Wzqlk1H9facS6hjzRDACm.
La Navidad de los gitanos (Yo Vengo del Moro)
La Navidad de los gitanos - Yo Vengo del Moro
{"copyright_id":"0x838e559e8fe9e07072ebff7fb2c040cee21119b46d17fcbb2456dd32da4d3c40","isrc":"ES6172424118","name":"La Navidad de los gitanos - Yo Vengo del Moro","registered_at":"2026-06-06T06:20:58Z","spotify_id":"7ocpAjpl4V9D3dLjLLc2VQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838e559e8fe9e07072ebff7fb2c040cee21119b46d17fcbb2456dd32da4d3c40. 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/7ocpAjpl4V9D3dLjLLc2VQ.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/7ocpAjpl4V9D3dLjLLc2VQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8530554a5661059bb656e064cffe3bf67f07be82a984e146bc3e85faae8ad8. 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/2hzX7lggaISuNpLDPpl2kN.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/2hzX7lggaISuNpLDPpl2kN.
{"copyright_id":"0xff4d040e115560b19833ec97010fcd2a0c9df6a8853ce39e480cbbd271df6077","isrc":"ES6172323132","name":"Ángel de la guarda","registered_at":"2026-06-25T00:30:08Z","spotify_id":"1Muhb6bwYFHQxmpQuXsbpP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4d040e115560b19833ec97010fcd2a0c9df6a8853ce39e480cbbd271df6077. 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/1Muhb6bwYFHQxmpQuXsbpP.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/1Muhb6bwYFHQxmpQuXsbpP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c9665f81503bfc7798f87b6ee130b75e7d2dc030e142ff24b70f2d06e42773. 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/4xTTKdOIFeAlm93WXc7EiM.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/4xTTKdOIFeAlm93WXc7EiM.