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 0xd3136b7bf799e5c6032679f7b44eaf65d1d8ea97f9c7c9efd944039e24714892. 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/35bf3d53-6f4e-4969-bc72-a943ef3cc906.json and https://artists.proofprofile.net/proofs/artist/35bf3d53-6f4e-4969-bc72-a943ef3cc906.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Popurri: La Petaquita, Arroz Con Leche, la Farolera, Manuelita la Tortuga, Elefante Trompita, el Jardin de la Esquina
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 0x57274fcae8193db0f01f53f0bc037c9a07fef25ac91c203487d3c8a5c52d6baa. 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/1E5p7HwQXj7P4qGER9kgBp.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/1E5p7HwQXj7P4qGER9kgBp.
{"copyright_id":"0xe733ae4f11f443c425fae57f163fe22a6404f6fb47989dd6a11ddff00c05abd2","isrc":"ARG601101263","name":"El Jardín de la Esquina","registered_at":"2026-06-29T15:30:00Z","spotify_id":"0WWmgnGRzDpzVxBjY8JOwa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe733ae4f11f443c425fae57f163fe22a6404f6fb47989dd6a11ddff00c05abd2. 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/0WWmgnGRzDpzVxBjY8JOwa.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/0WWmgnGRzDpzVxBjY8JOwa.
{"copyright_id":"0x5fe19b97bde9a4a1deb21f4ac8f1e5b2d980fedc50e3f09fbf3b3f756c8242b1","isrc":"ARZ022200527","name":"Piojos y Piojitos","registered_at":"2026-06-24T19:00:15Z","spotify_id":"4MqoQePny8O17tgG7MuyIc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe19b97bde9a4a1deb21f4ac8f1e5b2d980fedc50e3f09fbf3b3f756c8242b1. 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/4MqoQePny8O17tgG7MuyIc.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/4MqoQePny8O17tgG7MuyIc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022296e81a1c5d95e098ab3e023ba7d7cb2f8bb99790aec39edea4f5925034b2. 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/6mc1pdFx6deqRqoWM7JHD0.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/6mc1pdFx6deqRqoWM7JHD0.
{"copyright_id":"0xf90f62cea69c67fa419f1f858c4c8d7c4f9cc01c14e639ccdc35de68645b6d72","isrc":"ARZ022200529","name":"Huaynos de Invierno (Popurrí)","registered_at":"2026-06-10T20:10:29Z","spotify_id":"7uOpjn52SEHITcGAADfS2E","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90f62cea69c67fa419f1f858c4c8d7c4f9cc01c14e639ccdc35de68645b6d72. 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/7uOpjn52SEHITcGAADfS2E.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/7uOpjn52SEHITcGAADfS2E.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b6149444291a6bd7d4ac0f81bc1c7fa0d3842f85b92d5238d6f2fd86d4a413. 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/3EXOtMYBHas77Ab2k2lvN1.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/3EXOtMYBHas77Ab2k2lvN1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43044faa210dfe5f32f9d5411c1c3b740e07016353c9cb9d166930c7d8e43d69. 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/7xnuefN3sT3AOHLC75ZpIh.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/7xnuefN3sT3AOHLC75ZpIh.
{"copyright_id":"0x3012c0cf6aca04823d804a4b1aeefa82b2840b9d100b167f9faf5856ce1bcce0","isrc":"ARZ022200532","name":"Ojalá Que Llueva Café","registered_at":"2026-06-20T10:19:28Z","spotify_id":"7tg0e8rPuquAGnl608B1PU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3012c0cf6aca04823d804a4b1aeefa82b2840b9d100b167f9faf5856ce1bcce0. 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/7tg0e8rPuquAGnl608B1PU.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/7tg0e8rPuquAGnl608B1PU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd97ced4dde25203f75736c9e0f1081d446f7d18ca06672c29976976855da5f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:47:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3GnHX51h4gBPJgu1D8KjkA.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/3GnHX51h4gBPJgu1D8KjkA.
{"copyright_id":"0x5dacf311582b741d2cfe1e4045054d03580984fabebdbe4b60d41dc1853e3ea9","isrc":"ARZ022200534","name":"Canción de Amor","registered_at":"2026-06-23T12:37:09Z","spotify_id":"4vcuxkJYpKVg9SSXLeEYL3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dacf311582b741d2cfe1e4045054d03580984fabebdbe4b60d41dc1853e3ea9. 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/4vcuxkJYpKVg9SSXLeEYL3.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/4vcuxkJYpKVg9SSXLeEYL3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32100c138667151687f83fef115133006404bef95f9dd8a29615f69b434e6511. 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/2gryopRWfTBCRg6LCvKzcL.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/2gryopRWfTBCRg6LCvKzcL.
Popurrí de la Bandera (Bandera de mi país / Salve Argentina / Marcha Mi Bandera / Yo quiero a mi bandera / Aurora / Juguetes perdidos / El viento trae una copla)