1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x96fb7cca9cffe37660a366340edc0c9d0c33b00f768e83a70b7335cef57ecab3. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7cf8080-4066-4f3e-bfb5-8090f84fef5e.json and https://artists.proofprofile.net/proofs/artist/c7cf8080-4066-4f3e-bfb5-8090f84fef5e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b532e4cf68e9bef6a761eeeac8bfe80de33932f14edff384bf0bd105e88cc09. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad62f1b273c3ddfb456b5b1147ddbc4f42b6e9ec574dc52ec5d5a872d371276a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d75d9abab6d8d58dc537b5d7b83aa552ec88c8cba01f817683dac2b66b32c6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb832d2092d387c25c66fd59d89643b26f57829c3544d2f2e7d78ae66bd9b88a5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9940549af8dfd08b78a36397d4c05a9288a1de51fb7d8a35a26ab25f6feb8695. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30800049.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf71fce9da95c6bb9d68dc5b4144f3f351fac8eaa8bdb4130a6f44971a5cbebf. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fba81ba2419630f984289dd8ced3e49afee2816c1f5d9f64bcd80343f6b85cc. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f5273f9044cdaef512c3c794c4c1f63d9331891c43dfd503b56e79a05ca0bb. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30800052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61df48bb4993455c5f824a57a12775290d5cf63b772d6f9cd465d7f3b1fc6d3. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30800053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70782a87ece6b3b91deac23bb1291ddac2c1e10ccd993cf2e2b565b11f8da86e. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30800054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125014c4981a0c4ce1def7f555671cbaf8465dec933d67d055f28087958d7cfd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30700055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef3afd1b7f2ae755108a9b236416e80c821f8f1cb60f1d203c707d7877bc866. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30700056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc46e9e13fd4e2c8748896cddd86b50c5da2b79c9bade782775e629e97c513a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30700059.
Um Direito Que Respeitem, Uma Justiça Que Cumpram
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97ee32af7fa4dc0f5505e724dba396b48d25aaffc73035e5cacb3110e1bba2f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30700060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274ab04a440b6b30052719fec61e3a5cc50b87d6e462cfce269480e33f4190d9. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:59:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9215f27d8c82ef102ba026c411490e9b11542f809190a86cb2b4a0900666a0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30700054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49ad8e53b0a0ed62bcdd3e3f4dac3ea33b74529afcc65e9193c2ce8e4c25d42. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30700057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd309c726269f170816a307d0f08eec658f00bb366583744b151488a93807c7a. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30700058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e27cdde0116b027ea5d6c4c11c9ee85db96078ab92cfa36187a410824d86b8. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee79c1beb801a9234e9a725bf2c982ffa326602ccedf496e3d4424248f01504. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30700062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942eee6a13c0b87c58695e35a1dd16cf4cde6cfa2c116f73fb199c25440e3b82. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTMM1300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bc3282efa65e24848da7d51e5f705730d9fced8463158ee08baba6c945a21f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTMM1300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb91830d51a24d49553c861ea73d6f2dbc1b3ef0e62f826487ed6530f159f784. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTMM1300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527cf1cc78c31e5433d159642453078814100ce3d92413c7326aa81a3ff89b87. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTMM1300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf272e89d3abb83a13545a81aa5f07f8bbeea67006979ea0449bc3c1b4f98b6a5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30700063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26340fbf06c17b21095eee6f0f1e2d10b7995f2e13ab332a191cb536d3a10a7b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30700066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc823455342e946f045b38e77d497cb1f87c75faaf585df2eae92e7b2a96f52e5. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823c85825ed8ee4000dae897961433847493d3cb4511648250005ec7879aeb44. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30700065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333113686219a4f324ca12e15626b8b5a059b5da9b905dfef6a5190a3b582f2b. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30700067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc1a0343a846358701761b5a26fa07955665a7809c326fdff951a519e43f944. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFN30700068.