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 0xa7057dc4a37fcbc3cae3e95ea24ca7576e04332d226f1391119503774c8f4a02. 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/039eb067-931f-4022-8a32-147a6e5b5a27.json and https://artists.proofprofile.net/proofs/artist/039eb067-931f-4022-8a32-147a6e5b5a27.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 0xf9c0b58dd7281bf220972e12f679450ce1eae44ce12ef34670e8b0e152702cfb. 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/2LsjeVlvlXcz4c601hpa1I.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/2LsjeVlvlXcz4c601hpa1I.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c054b942ed49e7564f11c1b2d606834ac943253164bd024d8498dab5f23989. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0x1mPw1M4pi8yNNQ3TuHu1.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/0x1mPw1M4pi8yNNQ3TuHu1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c054b942ed49e7564f11c1b2d606834ac943253164bd024d8498dab5f23989. 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/0ZgJn67RVwvu2n8KkLn7aL.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/0ZgJn67RVwvu2n8KkLn7aL.
{"copyright_id":"0xa76fc29dd4af6159152ce0c7a109943503c21c8f42ca845b9eefefc6c285535f","isrc":"ES6702301007","name":"Como Si La Vida Fuera","registered_at":"2026-06-05T13:49:32Z","spotify_id":"7bPnercyV6IL7Bm2AOtdrz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76fc29dd4af6159152ce0c7a109943503c21c8f42ca845b9eefefc6c285535f. 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/7bPnercyV6IL7Bm2AOtdrz.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/7bPnercyV6IL7Bm2AOtdrz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e72cff10a62744d54501fee825327cf97fd74c787af8d841b13cf87b618741. 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/1Wb9Yz1lpj84e5vrbLy0TV.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/1Wb9Yz1lpj84e5vrbLy0TV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c0b58dd7281bf220972e12f679450ce1eae44ce12ef34670e8b0e152702cfb. 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/6AQQWn9TxfVZVQ0IffiXLC.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/6AQQWn9TxfVZVQ0IffiXLC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb9a883ce9227f906b80ec52496706b63b5c59f1a70993b957c7e2ec6596356. 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/2A9bGDJqkkz3Hbqu2AFyDg.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/2A9bGDJqkkz3Hbqu2AFyDg.
{"copyright_id":"0x36a7a98829709b0d4ea9cff4fadf3393fe9df5e29fef8072f768ca7d706e8c1e","isrc":"ES6702301009","name":"Puedo Presumir","registered_at":"2026-06-05T06:21:41Z","spotify_id":"4uVSHVMGN6DviQTA5ZyyZP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a7a98829709b0d4ea9cff4fadf3393fe9df5e29fef8072f768ca7d706e8c1e. 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/4uVSHVMGN6DviQTA5ZyyZP.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/4uVSHVMGN6DviQTA5ZyyZP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7f52906b9f5f0d395aa578d0388f9effd7c21efa9124c40987bce8c696ba7d. 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/408rkd9JzYduDyA1d2Yszf.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/408rkd9JzYduDyA1d2Yszf.
{"copyright_id":"0x6ab91215ea2de391d9142bcac8aa69acd946d79d46221b3cefbfee921091ac59","isrc":"ES6702301011","name":"No Se Pue' Ser Buena","registered_at":"2026-06-10T07:26:47Z","spotify_id":"7H6q7fbngd4OJYJc28jsZq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab91215ea2de391d9142bcac8aa69acd946d79d46221b3cefbfee921091ac59. 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/7H6q7fbngd4OJYJc28jsZq.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/7H6q7fbngd4OJYJc28jsZq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764c85927146e9c475bb7137df53c8e117a86e6b8555b3b3f7d4013a14e6954d. 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/0bWkpU31Jk9mr1SsHBiOzf.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/0bWkpU31Jk9mr1SsHBiOzf.
{"copyright_id":"0xbb9d4bbcaa13d48bf1d81feb7b3e12a19c74bc3a35a67ace4e2bf057c4c065c8","isrc":"ES6702301004","name":"El Grillo","registered_at":"2026-06-06T06:21:00Z","spotify_id":"2MJYPvtpXCPimNIpCePeBm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9d4bbcaa13d48bf1d81feb7b3e12a19c74bc3a35a67ace4e2bf057c4c065c8. 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/2MJYPvtpXCPimNIpCePeBm.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/2MJYPvtpXCPimNIpCePeBm.
{"copyright_id":"0x86aed3a57a2be084e7a8e3d8f1adfbae6851eb56f903233e7bf9fc9c0fba3630","isrc":"ES6702301013","name":"Para No Llegar Tarde","registered_at":"2026-06-07T15:38:14Z","spotify_id":"1WxAUqiYSv7NpwDRtXp3jd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86aed3a57a2be084e7a8e3d8f1adfbae6851eb56f903233e7bf9fc9c0fba3630. 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/1WxAUqiYSv7NpwDRtXp3jd.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/1WxAUqiYSv7NpwDRtXp3jd.
Qué Barbaridad - feat. Antoñito Molina, David Palomar, Encarna Anillo & Andrés Hernández Pituquete
Ringui Ringui - feat. Antoñito Molina, David Palomar, Encarna Anillo & Andrés Hernández Pituquete
El Tiempo - feat. Encarna Anillo, Andrés Hernández Pituquete & David Palomar
Ahí Está el Detalle - feat. Las Monicas, Ohad Levy & La Tía Mónica
La Perra de Despeñaperros (Según Sta. Francisca)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cd503e07cb4fa593756f33f870d7d2ceede5c27942c9ca6a48527b1a22f8b9. 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/47b5lKYI9uyO5Nz36rrhcX.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/47b5lKYI9uyO5Nz36rrhcX.
{"copyright_id":"0x02cd503e07cb4fa593756f33f870d7d2ceede5c27942c9ca6a48527b1a22f8b9","isrc":"ES71G2045330","name":"Malabarista del Café","registered_at":"2026-06-05T06:02:35Z","spotify_id":"0PDsWc1hwexGrVMOTuOMhx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cd503e07cb4fa593756f33f870d7d2ceede5c27942c9ca6a48527b1a22f8b9. 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/0PDsWc1hwexGrVMOTuOMhx.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/0PDsWc1hwexGrVMOTuOMhx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66bf898b29236d8b53d1b1045abd25d1295b66bb58ef158167f962952926f3d. 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/5lXfKnZzVIkN9D7XRQijlG.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/5lXfKnZzVIkN9D7XRQijlG.
Una cosa inexplicable (120 aniversario del fútbol malagueño)
{"copyright_id":"0xae643d449afc2a402255dd742cfab40fb17d26c3f4c01a1e685dec62e3272729","isrc":"ES71G2410940","name":"Una cosa inexplicable (120 aniversario del fútbol malagueño)","registered_at":"2026-06-06T19:22:17Z","spotify_id":"6Aam2jnyPc3JpsQ8jSY2wB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae643d449afc2a402255dd742cfab40fb17d26c3f4c01a1e685dec62e3272729. 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/6Aam2jnyPc3JpsQ8jSY2wB.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/6Aam2jnyPc3JpsQ8jSY2wB.
{"copyright_id":"0x5dafbda5663f355b0987390959cec14e3cd32fe4e6cf1d8ad99b60b7e25ae30b","isrc":"FR2X42251192","name":"La Cantaora","registered_at":"2026-06-05T22:33:19Z","spotify_id":"2QyFrpwFkp2rclpLATBeeW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dafbda5663f355b0987390959cec14e3cd32fe4e6cf1d8ad99b60b7e25ae30b. 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/2QyFrpwFkp2rclpLATBeeW.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/2QyFrpwFkp2rclpLATBeeW.