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 0x030f335e4b235f739e1e66a134c8003cb01ea8490e88fa766a077280d8673813. 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/23c55d05-0503-4bd0-93ee-34ff0a495e38.json and https://artists.proofprofile.net/proofs/artist/23c55d05-0503-4bd0-93ee-34ff0a495e38.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 0x1665c310c17821868860b1ed0c6e825ce930bfd633ddef2bc5261fe21d4950e8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNJW2167938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f0de1971caf8cad3e7e671941a83f5b70b211d430c0933922764788eba8bad. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZNJW2167806.
Dezembro de 81 - Flamengo (Arrochadeira Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f8b657c27124055dd1449cf55b7e527cb793a68ec53154f26f24c8fa5d3d74. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTVM2157554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bad4d12ef0de7cb1a2fab45bef22a50b8eabbc81e6a6361b07879be23effc89. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/US7VG2255766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a72b84eb6ed3fb8862036984d9016ccaf28fb2f4238dff1d44014e3d76a304. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:09:35Z), 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/US7VG2255741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b23f0ee7bc28e5fcb4f028cf16f1ffed98cb7db7f17fce53453fd2a3af46e6. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/US3DF2219028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb79c2b58afa4767e23dcd60d29f6e5555124be4c6b88db53e336f40beb0ca5. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/US3DF2218987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad8a8996152abcadab4d32763bce074dcc16aaa173a9838ee4594b16cf9b468. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US3DF2219017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5868cfa63fa4e97f2fc15bc5c5e0128005a49bdf474989ab81f75037eaf8333d. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:03:57Z), 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/QZNJZ2286766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615874cf9f6163037f46a61d4892be072a2dd7f67457243f9f1612c42e170442. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:45:07Z), 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/QZEQU2246723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd396e72116ad8e0be92ff4cbd39eecd95eb4bccb7b25de35644c4cf400ecd53. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZEQU2250251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac43028a1d28cb75b464872a5999952f8611c09b682b685926954d5e38bd7a0e. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:33:34Z), 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/QZEQU2251216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf676353e141fe1c9b7599c29e8c0aaded4329d3b405aeecc47a76a8da9f803a4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:43:44Z), 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/QZEQU2258202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193956563cc7631801c60a0b5e554166b2f4362a24a64ed5a52ee7437c6b049b. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/ES47F2300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7768171b10efce90df57ef938b40828369d06e8fd15aae3fe11d08bab67ffe. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/ES47F2300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b2afed40e69e6003becf458c666aac43385ee746d636f5fe9e91710457d163. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/ES47F2300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990634f54e24125c5233c7bceaba5004f19b35bd432beb09c39ccf6722dd2c75. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES47F2300214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c625db53a06d542af89825cc1deb6b80e655cee5a1836a8b19e3869a306e93. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES47F2300215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8bb248e1986c90c99941541798d22902380463d2fd1929b6805ba74cf03a22. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/ES47F2300310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8076e32bd750fe5f586527511cd35a646561e1501a3c9d948e698a398798159b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZMZ92374506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910ce114084f9f5102a2ee6b5fbcd28b2e5ab20e917e3040c3f3eeccd9a6e573. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZNJV2304703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc7f67a325c448c020bc8744f4079f8d07f797bb6f4878a4ee1bfc7b8433386. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNJV2304708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea59bc6b32e7ce60cd64eccfa9a542e4288032458c6921f398435359aa694aa. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZNJW2398354.
Chorei na Vaquejada (Cover Arrochadeira)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc9c70dd5890a62f9ccef87b7d4cffa0291ecc595e521c7c94b9c22dec4d95c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNJY2371352.
Edição Vitória da Conquista Bahia (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecb498f4274bb2650363b86bbd84ee72f6a3bd8dcb4a7caccc48ca8244a57be. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:44:37Z), 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/ES47F2300634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb021a472898d63eddc50a2943dc9c8c1fe1c21a116e4116189509836494a2abb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZW9L2370953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d241b1d491b1405167aecee5e9b0a45e48faec28e67ec08ec656f2afe9afc1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES47F2401278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9adde9b17839a0e6e7005619a81e6146084354d1a234ac00a2c84ff702e259. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES47F2401280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3123448a79209c313cd80ee05dbac97cbd35f3e2cb714b0e76536a28fc0fbc4a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNJX2478095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d39ecb6b399cc3f6830683294fc4bc37f3f93735ba36731491eafb6e86e487f. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZNJX2478078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e89a317e1fa7c261f02f20bbad96aa6b0167ee761a390386ce7c3a05772cbfe. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/QZNJX2478009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e440b77ab0b1bb44dbe17807bbee0970eff489d2bf8fb09105516b49fef854. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZNJX2478043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e20ba747a93ac59a289f68f99377de78ad27633ed20d2c78fe3f5ace4975d06. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZNJZ2400603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0a4e8879926a3cbd0ffa49fdd6ba5715e11d171c25df8f5d05016805f75e19. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZW9M2472742.
A Culpa não é minha (Arrochadeira Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18f292ad5b01793e56897025e4e55eec533da3730d88e2e0ca585f34b1b1647. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US3DF2500386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0b1f94b1a7f8618982158603b49b34c0e99649d0c897db4a6209b39c7851d3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US3DF2500387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d7ff2bba5e05641529a22112f42d1efba5ffa455f14d914eb4dbe41f877b55. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZGLS2567037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec578bbf61d7b90baeab6ca0a5ce0c637c32621cb10eecc3f641b40330d0e819. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:12:07Z), 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/QZGLS2566967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543336e7f375629aca4361c301e558632780d2f78d0f9792e6327d3236670bef. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZGLS2566992.
Senta e Cala a Boca (Arrochadeira Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d76cbd02659ba70ef70bd81b66b0ace8ab6013fea86b3fbbf20b1a1822d2834. 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/BCRIZ2400593.