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 0xbb72a7cc504a82c78fea81da76635201cb06c442e226096bc2fd41bfa2157fce. 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/cdc74b18-6ad1-4566-b408-ece446a754f4.json and https://artists.proofprofile.net/proofs/artist/cdc74b18-6ad1-4566-b408-ece446a754f4.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 0x98a5212f49dd69ce7d841dee41394d001e950b037289d8863dcb263e978b311b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BRNIK3000893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0553ef3183d7c7f65471b5dcf85386bf8d42706b3e0d84f7f92e1c5559b1d6d5. 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/BRNIK3000894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9871fe108e272faa33f4c7fd0a5920ed3b0b757cfb5f4695235ace5370c321. 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/BRNIK3000896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f31bb6d01fe8b52b308ce5e55d2206eeb29f8c2126247113e4517c0fb92b67. 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/BRNIK3000899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf051f8505b22634831c55359fa5d38f4b646f80d6bd5da1ca550acf8d06ea3ae. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BRNIK3000900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5243ecb13d5dfb44af19f6233d04601c25e52b85f939c503fdd24e12af486a9. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/BRNIK3000912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900e5e3ffdae23ca8ba944960ff27af51af23e6fdc62c4b505b8ca0be2f44d6b. 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/BRNIK3000950.
Amazônia Brasileira (The Brazilian Amazonia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373f82e12525f262907f61d65582cb9844196602866e5be273ef72b4e8c916f3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/BRNIK3000962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51840eabe248fd6291ea502e94003c66cffcf5d91524066cb9052b6deab9534e. 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/BRNIK3000963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b855d14b519b4fca314f54591cdb3cea6b5123ba1218a3709f44fad5074691. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/BRNIK3000964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9afe9c06944b5bdeb4a4f23bd2d8d9663af009e1bee86d5d3731f87e7f05d7. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/BRNIK3000965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe711afe3435a2a78158093a63d5ee409bfc2c476a8e0d6f1e2a23fb3f74b4cb6. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/BRNIK3000968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395b4cd476b6dc479b017706002df06c179c032c61795ef84800a56b7bb91192. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/BRNIK3000971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727d03a37b775f00762b29dc1e08533c9db63ceadc247ce115f481a5d7800c89. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BX1KH2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460a597e2d36ff38b299fb53b8bcc0e584d9974aaedd3569f609bf86c047cff3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BX1KH2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6986c7f0425aab44a6025bf5870e22051675136c48e4111defaebf2295f60800. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/BRLBU0000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31aeace9d4554ea5b6184c0320a3f8c59a70daaa47f700268eb6a0329e533c6. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/BRLBU0400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5ad7aa2f52c176c090421493d7f1b0669bc0bfa570ab7e0e845ccf2e58ae01. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/BRLBU0400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5798e2b66a4abdf40ff201d3810c9b7bea2e57759b986aa7442d85ef9289ed3e. 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/BRLBU0400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5752be47f4dab18fc30ab0b7ff380008a97f5cba6ec830f0d02ef45246282914. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/BRLBU0400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0924aacdc03ae1c12762599df99d7299a80978824f73f66a4c16e9e0ae876a. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/BRLBU0400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc46e3df25ee990bfa1f133b33245fba71a5a24846b8d1a365aaa442e47200d. 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/BRNIK3001221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40859dfc3c35d75098c077072fe3ab3af90dce46105fef17ffbbdef8a8864d0. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/BRNIK3001206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc46e3df25ee990bfa1f133b33245fba71a5a24846b8d1a365aaa442e47200d. 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/BRNIK3001221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230569c124380f3fa7a0e3281078ad354ce326c3695ce38ccc957fe5d4971af0. 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/BRNIK3001224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001f05cb4e950a059490e350b65363e6d03f94cac644d6e8593d11667c5293d0. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/BRNIK2500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963c06a50fedb7af6699e53e9c0d55839944cbcf217241f622c3e2b268cdfaed. 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/BRNIK2500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf012d2f905df41407c0cedd5b79cecb3c09a1d626354e584ea00e47d41c601a2. 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/SEYOK1710406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0671262a868a6131fe127386afd0d76abb63b79ec565f3344d1c049ca39c712b. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/BRZ9C2000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04388daf767690f25558735ccd899d13ef28be6e032b2fc56ae51b4d240d3fbc. 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/BRNFS1600350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf378f33ac6bc2905378961b75b7ced7c80d910fe16af8af3d036dfe9bb5437e. 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/BRV3P1500021.
Suíte dos Bois (Bela Cigana, Bela Mocidade, Som Meio Boi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e14c0cd3979d8052ccf68b99475c4bde908921a3faa1eb78c9fbdd5d7015552. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/BRU0C1700012.