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 0x04268f0882d2bb9a7304d472dcd6b1ac4929abef1015d9f19737c158c269d102. 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/5f04d77e-d867-41e7-82c9-9a3830352935.json and https://artists.proofprofile.net/proofs/artist/5f04d77e-d867-41e7-82c9-9a3830352935.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 0x373f316e4b860cdc14d43308552609a8b2fca2098c750d935cbdde8d776e1434. 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/6uSUeiyQIKGgqlyundXYwX.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/6uSUeiyQIKGgqlyundXYwX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ffadeeb45df304511c4ae949d6da19e82f897c65215281f5d9e3e079a03c60. 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/0oX8EXK34XC1avtGQNfpZJ.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/0oX8EXK34XC1avtGQNfpZJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda22e1f175d004ded1c92f93ee6402ca553fcce21dea53e429944faf973de613. 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/6OjTC5RUbZ3sPNuyTupNul.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/6OjTC5RUbZ3sPNuyTupNul.
{"copyright_id":"0xec9ffabbad5ff71aeaf55993e2a68312efa4cbd53f01848e48b2b8393f3f3ea9","isrc":"BKBSS2400125","name":"Não é Segredo","registered_at":"2026-06-25T19:53:41Z","spotify_id":"3Rlp2NYrtrd4yEuavEP6QR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9ffabbad5ff71aeaf55993e2a68312efa4cbd53f01848e48b2b8393f3f3ea9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3Rlp2NYrtrd4yEuavEP6QR.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/3Rlp2NYrtrd4yEuavEP6QR.
{"copyright_id":"0x15ee8e5fd7a6f8aa0178cd82813ce917e5996c9dba1a7cdc6680e9aa28247846","isrc":"BKBSS2300370","name":"Clima De Verão","registered_at":"2026-06-06T17:18:13Z","spotify_id":"5EmrCuZrAkxCZd0y94biQy","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ee8e5fd7a6f8aa0178cd82813ce917e5996c9dba1a7cdc6680e9aa28247846. 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/5EmrCuZrAkxCZd0y94biQy.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/5EmrCuZrAkxCZd0y94biQy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1f69c3034710e3974160b658916058cf90c17f45363f77d1040af332ea6bf4. 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/1UW4WpQzFxoognyVema0qU.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/1UW4WpQzFxoognyVema0qU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40cf133a659c1fbfe1baf92d06b0b51cb021fa4f8b30381e58d1b68c946edcf6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5u2C0oxoQpDd0s0cB1k3gO.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/5u2C0oxoQpDd0s0cB1k3gO.
{"copyright_id":"0xba07c7940873aaf48b52cb16a8cb1a0dd9d739dac7735b4d450eebddd6aac11e","isrc":"BKBSS2400705","name":"Set dos 14","registered_at":"2026-06-05T12:27:20Z","spotify_id":"14RziTXOLLfLAVUfbzrQyD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba07c7940873aaf48b52cb16a8cb1a0dd9d739dac7735b4d450eebddd6aac11e. 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/14RziTXOLLfLAVUfbzrQyD.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/14RziTXOLLfLAVUfbzrQyD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4feb7a4c0cb71d25025e8c111f5ced31954741bd793783d42820e5a5f098f03f. 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/1k8aJ2o9Z4WP66Pv341b0p.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/1k8aJ2o9Z4WP66Pv341b0p.
{"copyright_id":"0xfa037517ddd9ac94758c970aed1de8eb74e2546f167be934556484851b95bc6c","isrc":"BKBSS2400503","name":"Casca De Bala","registered_at":"2026-06-10T17:34:58Z","spotify_id":"2bNGwA0z9hxfBSSSiAxSte","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa037517ddd9ac94758c970aed1de8eb74e2546f167be934556484851b95bc6c. 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/2bNGwA0z9hxfBSSSiAxSte.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/2bNGwA0z9hxfBSSSiAxSte.
{"copyright_id":"0x0e1e5a9f5cc5bbf62c52c30886c081e5e138e784d07aefa650b27c95ae39716e","isrc":"BXG6R2400478","name":"Medley Terror da Panelinha","registered_at":"2026-06-27T03:02:11Z","spotify_id":"2HOr7Rp6JviqLVUtOmxTQE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1e5a9f5cc5bbf62c52c30886c081e5e138e784d07aefa650b27c95ae39716e. 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/2HOr7Rp6JviqLVUtOmxTQE.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/2HOr7Rp6JviqLVUtOmxTQE.
{"copyright_id":"0x915da2554ccce17eaedb98737c8a02c500be5423d82ebcc4883888eb73169cf5","isrc":"QZNJW2404935","name":"Sua Alma Me Perturba 2","registered_at":"2026-06-06T17:25:22Z","spotify_id":"7ElJ8gbQNmidZPlvHEqWvN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915da2554ccce17eaedb98737c8a02c500be5423d82ebcc4883888eb73169cf5. 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/7ElJ8gbQNmidZPlvHEqWvN.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/7ElJ8gbQNmidZPlvHEqWvN.
{"copyright_id":"0xe08e124aaea10993e33efe72b89f4808cca50d2cb53a9f95bd387be2f2b8ede0","isrc":"BKBSS2400339","name":"Entre Ela e a Boca","registered_at":"2026-06-19T12:40:49Z","spotify_id":"0OId0lYYhf4CADrbxidvXZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08e124aaea10993e33efe72b89f4808cca50d2cb53a9f95bd387be2f2b8ede0. 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/0OId0lYYhf4CADrbxidvXZ.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/0OId0lYYhf4CADrbxidvXZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5889faa97b72a8ad71523997559fb9eb4e8dfc869c6528e32510b89ce5344cc1. 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/2VVk1PRsWHYC47PGXVgnRl.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/2VVk1PRsWHYC47PGXVgnRl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35581bf7ef8df949584a57d261cee1f2f29c8869f90e068492cddf205fa6df5b. 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/4T6pJuSJNulHkTc792CGsM.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/4T6pJuSJNulHkTc792CGsM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3665e49addb51ccd6a423adcf8f44762755d45098ec6b9120ac358e307055961. 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/4YZNR99EflMEclrk4FYkfA.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/4YZNR99EflMEclrk4FYkfA.
{"copyright_id":"0x985aa7b438ffeac94dbf1f9e5df97bfb1adabd6bedf9000fa64ba6103e7adfc2","isrc":"BKBSS2300313","name":"Vida Longa Aos Inimigos","registered_at":"2026-06-11T10:13:21Z","spotify_id":"3iouqYxtjXdTrKXSdb097w","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985aa7b438ffeac94dbf1f9e5df97bfb1adabd6bedf9000fa64ba6103e7adfc2. 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/3iouqYxtjXdTrKXSdb097w.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/3iouqYxtjXdTrKXSdb097w.
{"copyright_id":"0x1d756ca4d7a8a5f2e5a8657f4ca959cc2a539c7a8efc1e1cc569c009cbf75cfe","isrc":"BKBSS2300298","name":"Cinco e Meia","registered_at":"2026-06-18T00:33:02Z","spotify_id":"6lSFJ3F4MngbvuFI73ljwS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d756ca4d7a8a5f2e5a8657f4ca959cc2a539c7a8efc1e1cc569c009cbf75cfe. 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/6lSFJ3F4MngbvuFI73ljwS.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/6lSFJ3F4MngbvuFI73ljwS.
{"copyright_id":"0x6b080ba61ab2963e0c64748f991e8a15d74ca04e0bed38c5ffe6ad55c04b0ddf","isrc":"QZGLM2318927","name":"Carro Cheio de Droga","registered_at":"2026-06-10T04:07:42Z","spotify_id":"3bscCV8O0S8A5BL3YKBNCL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b080ba61ab2963e0c64748f991e8a15d74ca04e0bed38c5ffe6ad55c04b0ddf. 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/3bscCV8O0S8A5BL3YKBNCL.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/3bscCV8O0S8A5BL3YKBNCL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9eeea05dfb87159c330b0626daa91b47030e200e03c3d85c744c7bfcfec38b9. 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/0M5R5mi6N10axcqV21Pjog.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/0M5R5mi6N10axcqV21Pjog.