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 0x91cec761c67b59b189bf8806dfc146db7e795e6187450a6698f1b2c5eaacd40c. 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/b9c4dd96-7b95-4856-9534-a1340dc2be2a.json and https://artists.proofprofile.net/proofs/artist/b9c4dd96-7b95-4856-9534-a1340dc2be2a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Seca el llanto y no me llores - Remastered
{"copyright_id":"0xe57287daa265f064154d23bb7d6188837746e850a4f923bbe1d6efdd4b5782d7","isrc":"DEXN81800371","name":"El Macetero - Remastered","registered_at":"2026-06-19T17:23:44Z","spotify_id":"2OryfbCiUrRVnnSusgJIbi","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 0xe57287daa265f064154d23bb7d6188837746e850a4f923bbe1d6efdd4b5782d7. 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/2OryfbCiUrRVnnSusgJIbi.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/2OryfbCiUrRVnnSusgJIbi.
{"copyright_id":"0xca80b2e963aaaebb460aae628787f5d5feda3e07ec038d33216efef45ab7f9e4","isrc":"DEXN81800373","name":"Dos Cruces - Remastered","registered_at":"2026-06-24T21:33:59Z","spotify_id":"4su5lCipxELn3jS8tGO5BM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca80b2e963aaaebb460aae628787f5d5feda3e07ec038d33216efef45ab7f9e4. 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/4su5lCipxELn3jS8tGO5BM.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/4su5lCipxELn3jS8tGO5BM.
Seca el Llanto y No Me Llores - Remastered
{"copyright_id":"0x97e1a17596e783cba85cf5b05eef3d6d7191f9e963c4b1da818e360edcce0606","isrc":"DEXN81800403","name":"Malagueña Salerosa - Remastered","registered_at":"2026-06-21T10:00:49Z","spotify_id":"5awX8yJX38OVh0b9mAWEna","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e1a17596e783cba85cf5b05eef3d6d7191f9e963c4b1da818e360edcce0606. 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/5awX8yJX38OVh0b9mAWEna.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/5awX8yJX38OVh0b9mAWEna.
{"copyright_id":"0xa0808bdccd27e62bb4fef603561ee8bd8d34b8065326ad6092e9080124386f85","isrc":"DEKB71571672","name":"Yo Quiero Ser Matador","registered_at":"2026-06-09T20:40:25Z","spotify_id":"4Gw2nU2xEEYLyWhWmEsQfw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0808bdccd27e62bb4fef603561ee8bd8d34b8065326ad6092e9080124386f85. 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/4Gw2nU2xEEYLyWhWmEsQfw.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/4Gw2nU2xEEYLyWhWmEsQfw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51eff5b940197c7158d1c19909f27d066039bd60c43bccbadcf247fc53500648. 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/392k4dWFO38GNqoWVqvl5x.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/392k4dWFO38GNqoWVqvl5x.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3407488b31bbb427cd3480e104f55d2823fb10713a085c338d8b7117f48612. 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/38xQoBb2c653FGWJkWHx8w.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/38xQoBb2c653FGWJkWHx8w.
Éxitos de Antonio Molina y Rafael Farina, Vol. 4
Éxitos de Antonio Molina y Rafael Farina, Vol. 3
Éxitos de Antonio Molina y Rafael Farina, Vol. 2
Éxitos de Antonio Molina y Rafael Farina, Vol. 1
{"copyright_id":"0x947b777d5b739fca03bf56c52f68a2bb50dbedd0c36a9c63f8ca3081ffb6a58c","isrc":"USV351488113","name":"Toros y Coplas","registered_at":"2026-06-18T05:53:39Z","spotify_id":"7r3qpGaMilBODkNS73IIL1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947b777d5b739fca03bf56c52f68a2bb50dbedd0c36a9c63f8ca3081ffb6a58c. 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/7r3qpGaMilBODkNS73IIL1.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/7r3qpGaMilBODkNS73IIL1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867166df794e3899753995ce8d569dc1080b805db2ae0eba1bff3de87c426e37. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7xI2zkjgxMZXRT84iM1y5k.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/7xI2zkjgxMZXRT84iM1y5k.
Yo Quiero Ser Mataor (De "El Pescador de Coplas")
Cocinero, Cocinero (De "Esa Voz Es una Mina")
El Agua del Avellano (De "El Cristo de los Faroles")
Soy un Pobre Presidiario (De " La Hija de Juan Simón")
María de los Remedios (De "El Pescador")
Los Cachetes de Tu Cara (De "El Cristo de los Faroles")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cfd01908cb9e8856708eec1b960d5cb484bb31e1ef01f4cec5dd6662953259. 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/2d1Sf43xT464M5w3NwHIvo.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/2d1Sf43xT464M5w3NwHIvo.
Ante la Imagen de Cristo (De "El Cristo de los Faroles")
El Hijo Mío (De "El Cristo de los Faroles")
La Hija de Juan Simón (De "La Hija de Juan Simon")
En el Fondo de la Mina (De "Esa Voz Es una Mina")
{"copyright_id":"0x27753ffc9338d86b51f4b3d94e51bfa9707100f6c8824473a13f901acc5ec995","isrc":"QMFME1391298","name":"En el Fondo de la Mina (De \"Esa Voz Es una Mina\")","registered_at":"2026-06-09T10:57:34Z","spotify_id":"5phCAd6X31FF63KIjij0zn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27753ffc9338d86b51f4b3d94e51bfa9707100f6c8824473a13f901acc5ec995. 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/5phCAd6X31FF63KIjij0zn.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/5phCAd6X31FF63KIjij0zn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cd6f90e7efbca4183b3792ace11086e95757a3da3aa7af8c63f48ae7fd741e. 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/390qz31o0euYVczQnoLB8X.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/390qz31o0euYVczQnoLB8X.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179b558e341c2925306694062ef0f90cf42e9caeac993bf82172d2f9d682f833. 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/0SN2YnzNBz0M0MTiyVm5aO.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/0SN2YnzNBz0M0MTiyVm5aO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7f3d0cce1ba3cec8d32bb74874fa1e4f31d970692703b42bb64db474487a54. 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/5NLdsm3hGLTUsz6VqKutmM.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/5NLdsm3hGLTUsz6VqKutmM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab984aed3e88d7f6159204d5456111d25f2c74933d9b0e92b24d46dbd424e96. 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/2sTbP615iLY7aMDuWwpapQ.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/2sTbP615iLY7aMDuWwpapQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbed2d6889939de061b69acd29aac94b5ee5a7b446e64137701435640096d62. 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/2kF82zjEbaKzaLPGQe0oLV.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/2kF82zjEbaKzaLPGQe0oLV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859f72e884d71e56f6787504cf03b9e023a7e57dbee8e51a5d77fd4044f147b2. 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/3qMxKZpI3TTrBcRkmA3f2G.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/3qMxKZpI3TTrBcRkmA3f2G.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7b970ecd835db8fd23d91c0af7edf454e06736d23632a6d1a4dbe993c29ae3. 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/4x2vIzfxLHEySNhFHul64m.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/4x2vIzfxLHEySNhFHul64m.
{"copyright_id":"0xa58c5bda8222eab84c8146d936c3869665478d6a5d8544bfa2f27985cecedae3","isrc":"ES5301251607","name":"Las Murallitas de Cadiz","registered_at":"2026-06-25T13:43:25Z","spotify_id":"4sQgEWMlrxXwBAOkKphb1k","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58c5bda8222eab84c8146d936c3869665478d6a5d8544bfa2f27985cecedae3. 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/4sQgEWMlrxXwBAOkKphb1k.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/4sQgEWMlrxXwBAOkKphb1k.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577bf8502e4ff957789cc6b03243aff115b07d90774c5a6726baa42a9b37d076. 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/1tUAA79pf3WDt9T7bO0dVA.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/1tUAA79pf3WDt9T7bO0dVA.
{"copyright_id":"0xbdea155ca1a49a4112e3ec4fe4e4a18858c1892ba049c6f387d764be0dee1270","isrc":"ES5301251609","name":"Son Tus Dientes Alelies","registered_at":"2026-06-08T23:11:30Z","spotify_id":"6HS5z1HGJw0anAsHSUoMen","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdea155ca1a49a4112e3ec4fe4e4a18858c1892ba049c6f387d764be0dee1270. 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/6HS5z1HGJw0anAsHSUoMen.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/6HS5z1HGJw0anAsHSUoMen.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dec1536f79e37c36eb6dac8d99fed040701eb2821df57307e99b84972b48ff3. 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/2jWSGr8PMaWksc3fH9yGGn.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/2jWSGr8PMaWksc3fH9yGGn.
{"copyright_id":"0xb8e3487e7342fda0a5bf66ff147ede3dcf0e1d1e6f4198bf623f650ced9788e5","isrc":"ES5301251612","name":"Ante la Imagen del Cristo","registered_at":"2026-06-09T10:57:52Z","spotify_id":"7pg7ZlOKpO4TpKcrwiLAOY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e3487e7342fda0a5bf66ff147ede3dcf0e1d1e6f4198bf623f650ced9788e5. 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/7pg7ZlOKpO4TpKcrwiLAOY.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/7pg7ZlOKpO4TpKcrwiLAOY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb60e33550725ec0223fa39247b2a05aa4559d4e0687176f5b507f14aa89387. 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/47KC4E0UetvyWNFZn0Hjp6.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/47KC4E0UetvyWNFZn0Hjp6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41293e1b650c6fd4eb9025412b22f298515e73a4aa667295e0dd734846e7a368. 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/16ybVeGaLT8jpf1d8VNPqO.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/16ybVeGaLT8jpf1d8VNPqO.
{"copyright_id":"0x3a2c5eae616264a61b4eefe572414a38d96bd6e6db9d29ae10dd044d6cd09ffd","isrc":"ES5301251597","name":"El Hijo de Mis Quereles","registered_at":"2026-06-10T14:39:01Z","spotify_id":"5sKwOcU1Cbux89cTsz4tHJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2c5eae616264a61b4eefe572414a38d96bd6e6db9d29ae10dd044d6cd09ffd. 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/5sKwOcU1Cbux89cTsz4tHJ.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/5sKwOcU1Cbux89cTsz4tHJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3873a404164a2660dc959f0acd257d1206096330888539fbff8c9f2651b9899. 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/3Y02ooZBqIt9wiQgNw4KYC.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/3Y02ooZBqIt9wiQgNw4KYC.