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 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 0x4e713df7fe6a8e316ecef6a6e9c0d1e33243a7ceedc9afbe32aa10a2116daaa9. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d63f8e82-66e7-474e-b69d-3ca229d72e05.json and https://artists.proofprofile.net/proofs/artist/d63f8e82-66e7-474e-b69d-3ca229d72e05.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 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 0xd8ab2a55b260be71344f8c789ce266bbc6db634f785f4bc8b90eea2c100bfeb8. 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/BRUSA0600442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9180e43b7c3807939d5a768e56208519255ed7f59cc94bd3d2063a880e80d24b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BRUSA0600328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e9fd632613ea3c7778bd8c80c2a77896f5ff23681cb3ab2898a2c2d38da0cb. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BRUSA0600348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf32be98995ef6862d35f9f7232e7007624c03f67e3071cdbefd84af543bd9d. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BRUSA7700329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb096796ff70e4d020fba6303dbb4b9de2a1a7401c638ffa0d0eba0d352887d8a. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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/BRUSA7800330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1344dbab05136ab76bf7719a7eacf3ee019f6e28b31baeedf095ce796ec4a0a4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRUSA0600350.
Que Pescar que Nada / Bebo pa Caraí - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441d8e0801caab4151fb9dd389c01da0bf5bb1041c022a28f5670b35fb649b1e. 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/BRUSA7800331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3860f5c8049e2e133f156db67dbd1ba646d6f6b74d3b18eb0aec3241e7e19d7c. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/BRUSA0600351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff0dac73d8315233af32079aae984c492c2810c1016404e77d5022d8b5a80c8. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BRUSA7700332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3757cf0d6f029a11d072ccd037254ce766d195304b5ba08a355762d497eb9eba. 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/BRUSA0600352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5660fae8eb8bf6b8da682d491ec9440f9bb7c65510dda21cdf36e30ff703c2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRUSA7800333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa150d171a325eb2518d7616b4132fd5e211671f941b591038e474603c158d8eb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRUSA0600353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e8f567ae919923d53782d7abf95b16b05914aa3c93aca955bdd98048901a6b. 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/BRUSA7800334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78aca47c40b9eb9ac3a9587156e6e32d14ffe22ec8c55a71d19683b42b8bc5ac. 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/BRUSA0600354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b6dcb8c164361ea083b051509d7fcd924dfea58be6a70f40d2989187f6138c. 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/BRUSA7800335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7bbf3c4f419eb7212dae3a58f2639e332095112190abfb3e966ad509795bbd. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/BRUSA7800336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1732922e815977bacf22d65a69278a1d6d6a707aad181a0294a51e10bbb301e6. 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/BRUSA0600356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89542a12465f97ba192410260c5b62318671e6fe1b6d17d397ea102250a26dc. 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/BRUSA7700337.
Se Guasqueando para os Dois Lados - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bbc0be4997937a78a58dba2903c565d715d9d0a7d7ffdf465d1f98579c94ec. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BRUSA0600357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdac8dacfc37fc7c7b40c965f8813071fcf947a59e074316e2a8f6b59982410. 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/BRUSA0600358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5530c2654a382b9bb4d420b252691a4d6159968c1891dbc297204ea3729849fd. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/BRUSA7800339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28ed184025d168f1acaffe42439109105fe6f023ee26ff18f97f86d685d3422. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/BRUSA0600359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3456fdb7b5783de735659ad9765fe75cba585622549f97b4b9af28660a4d6f08. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRUSA7800340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c317ad6cbcc9ef49dc4525452c2b8cfc24ca9c2cee5037e1da248e1e30d4bb4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRUSA7800342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b735338a1981258121801be7e2806bb823484d3ba5135fbc4f725bbfb5bfdba. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/BRUSA0600362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4414177b15650237579e9a1e382a05b9017ec681e3bb0f69167e3f84f1fab2b8. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/BRUSA7800343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b92690d23cda76c32c981f2e2fa882fbccbeffd5fc9cb79e5c3f3d9b012b79. 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/BRUSA0600363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a494e96d4d0c60ebd121f6e26ed71c71dd090a5f272c938b34024cb962228f. 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/BRUSA7800344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5329d739d9665254c033680226767a9bf14e3ab6ea8a458e177b870d55313fc. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BRUSA0600364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c4eab1ee4af4525a9b7c380fbc29962e2b884ee4d667bd749248fab5da428a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/BRUSA0600345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238c4493644aea5cc2ed643ae9819694856b2c72fd7e19b611def165f612f8ae. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRUSA0600346.
26º Rodeio Crioulo Internacional de Vacaria 50 Anos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9def284da4150356fb8cf1008056f1730fb80967578060f86df033a3cadcbcd9. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BRUSA0501062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa6a859996b2e5320a7e6cc727d32a72bb0367472ccbd7735e91d7199294e20. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/BRUSA0401938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63ed282c16a48d0122cf9853708c2ffa1540fa232951c27bf6df6b182f6165d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRUSA0401932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644396b288ad9c7daef9102e772c01f28624b3fc8d2d6303ade6d1ea160b76b2. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/BRUSA0500960.
25° Rodeio Crioulo Internacional de Vacaria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba6a698c3f5569bf0c85776446678c99fb27f81b10efc134fa1d6c1f0afbdf3. 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/BRUSA7800163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86eb03b6ccfdb6ea9db50839c4fa6a98f8abe15e84e8925e5a826bb7b7c81623. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/BRUSA0500175.