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 0xe9d5470405f21dcd1935f5dc69448e94d4d1ad31db000b95d09b7bb7942427ef. 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/b6446ba6-6b8d-40d7-bb14-7d45f56ee088.json and https://artists.proofprofile.net/proofs/artist/b6446ba6-6b8d-40d7-bb14-7d45f56ee088.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Os Maiores Violeiros Do Brasil: 50 Anos de Pioneirismo da Verdadeira Moda de Viola
Os Maiores Violeiros do Brasil (50 Anos de Pioneirismo da Verdadeira Moda de Viola)
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 0xeb23b1b7f255aabb86930e3753a9c6e147629dc2662256d64f00680e66ae28ec. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/BRMVP0500305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154a905d37741a779d68f22b763a7ec21270f1b9a85d1b8c1fae609a5e02627d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRMVP0500307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1947a6ced610d50c88884c0de50b392c191d4627f31f646c2726ca53219ca54b. 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/BRMVP0302395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f87c9292091e22643ddd5a91e6cead1d39f9c3285bddd6645a8903bba70e9a2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BRMVP0302396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552e97659bf22a97c91a8397a4fa854abea9b2f830b5ecb7aa19bf73e3f25e9b. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:41:01Z), 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/BRMVP0500112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9151fb7211eee68a7ab32e1147a48960fdc7f3be31732de4edd032441fd172b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:29:01Z), 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/BRMVP0400878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b43b65b7e92d440862d86ee6f7a83d5d08c3abba26887ccc0a854f93c69503. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZ5AB1862974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05953bf693937e25ea535c2001ba8e1d24bcd8a8f469464a9a21bac93fb11389. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZ5AB1862981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42bc0e9082a1af36b773974961040c108ffe08a1fd03094327de150adfd0c76. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/BRACP0301002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaafde22b79b5cae6839a19da70f87083a57b05525b46caa8ebcfb60d20a1e6d. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/BRACP0300934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ed027aa5b84fa0ca2a893bffb61ef588cf8dd5e635e3bcdf1d4e3595a88c89. 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/BRTWI1100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb57ab5311efcca8e5d5fb749aa80a8c3ecab65cb22039586aab51bbba26d19. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BRTWI1100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306ece52acf8b2db382f0e4acf32b74d3ea19661486e2a587c2d3996d867d5a2. 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/BRTWI1100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1ab62a37b3cfe169abf137ec3ec587abfcecb6a07a368a6a1f62af4e8d9dde. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/BRMVP0200908.
Brazilian Roots: Sertanejo Raiz, Vol. 20
Brazilian Roots: Sertanejo Raiz, Vol. 19
Brazilian Roots: Sertanejo Raiz, Vol. 18
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d8d97d3ea2d6f1c4fef3b7baa6899099fc2663250a7a91e77e0fa5f2b55262. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BRMVP0300196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d3fafd5d90ddea9f233668813202277bd73b6eb49d9b7710c3c17ce597f191. 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/BRMVP0300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68265f4b15f50e5c1f69e590707973c248b5adaf87254e6a68ab29f9030620a2. 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/BRMVP0300208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d112171f5563597ac9e9ec5faf545717c2dfa84e15ba2c56c382340152114b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BRMVP0500455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743e4b48f84fffcdaec714c4b6f445c3c2876439de0f4ea12cab143319ba1e1c. 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/BRMVP0500311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d24af6b23819ebc51d9cb1172b80d5b22f8c17f68ee6c7da60891a76553db2. 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/BRMVP0500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57b1e6c17aefe6e137ba520816c17ae7dd94235e86f874039e29708988f04a1. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/BRMVP0500312.
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 0xd1fd74a1d5492cde5e825b0d5232b30f65d9f3ad92918293bfd3ae136f35d7e5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BR19C1600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4f4f802ac9f3ab58bdf4b89b6904997067c7e4b3d2dc5dad8f515f6cddfa65. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BR19C1600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88622ce646d6ef34c7350085a5490beeeec0663778afae8eab1ba2759134f97. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BR19C1600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa5cfdcda174a3e7fb9d5dc0699a7b6e154d8bf9436f73f9d7e39191dfa8bd1. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/BR19C1600027.
Série Duplas do Brasil: Coletânea de Sucessos