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 0xffa3079e407ea2ce450a8f5a6b1f1a2c06dbd4bcabfd7b6ce810e2df981b9947. 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/4f07eb87-f182-4ad9-be08-e2063ec19db1.json and https://artists.proofprofile.net/proofs/artist/4f07eb87-f182-4ad9-be08-e2063ec19db1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Musicar: Tema do Festival de Musica Infantil 2018
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 0x620181a17fa0b6ab90f2fc083b470a62c6dbfb8cf3a77d660fbfaf6678427906. 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/BRTRB1856384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63d7cd6730ec49b035dd12dfe812e04db42a5d563174fdf9ec4b8310270ee05. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BRRGE1803268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20669a9c42654d74bf055b201627e5dbe85385cc144ea6c9c965327b7882dc5e. 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/BRRGE1803269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d5a8bff984d9866b96f0d1f83296079a8f113da9249a5249132328e7deeea9. 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/BRRGE1803270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43823a660620c6cc2cf48aa12dbd6e7ffe0094ea5d984bd84cc448d555d19d23. 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/BRRGE1803273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6ba5798344053975cdd4b919715322256f60120ef56a22e4ed3c6216e009e2. 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/BRRGE1803004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340465f26e29393909f5d9242bdb2eb6ab8e0868193b9b64b472dd2bdde3c632. 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/BRRGE1803275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd26003224dc46de8225de4a1b6c1f5600e6b654d88ac9c93da4391ac6f54f4. 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/BRRGE1803276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35815e22ba03effc9358d771357253f2c3f108e7fafc354affc3981f9ecde7cd. 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/BRRGE1803277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1e6915f4de742a6a4e678090626c73f8c9f54a2809e964eb0a2b78d2a8f1ee. 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/BRRGE1803278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd700a538acb2621f3006aaea2a488ea5c3555b9e8f3fdf08f4dae9701c08a0cf. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/BRRGE1803266.
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 0xe1ea9c2624e3630da63b9625418289936a649f1ccc52108312cfe41491b91a73. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BRRGE1803267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b9b5dff3356fc57a934d903ef00f6cec6bfe02d54a625ff1fd2dca34d0ed86. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/BRRGE1803271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382f898c60a7ffcc53df9145218af04ef72387df1e584a1a428adbb22deedb58. 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/BRRGE1803272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb9990907b55b0c7ed323611fd1ea055903ac76fcb72293bf1bd394b29fd395. 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/BRRGE1803274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1979f4a624677b54b39e5785265f4cc45ee4112b59f5dbb2c1eb56ec26a4cf7e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BRRGE1906297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed1aab65c904299c82e45b370effddee1b47589b83eabb0903aae5d890f6aee. 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/BRRGE1907410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233963ef62f147530551c7d323c64c6bcf2884c68d4df68ac65ba4414523b19b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BRMUD2100063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320da20c32b3959f2bbc5895700a1253e19fa8816dba2337cdde162fdf5a1557. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:11:58Z), 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/BRMUD2200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86adf60467f6a9769c401cc8d936a2170c808a23e2d8ce392d58d00010a5a576. 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/BRMUD2000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d5e64a911ca51b5c5bfa81a11d1724427d07acd52f62e70d52fc1abe82a00a. 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/BRRGE2009634.
29 Prêmio da Música Brasileira - Homenagem a Luiz Melodia (ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d88a0622f657a31db72e4ec89600e059991ea4217352daf3ff6fc654a61711. 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/BRPUI1800527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bbdcdd2a2c8c557397b8aa4b3bb7a5aacab9a8bb60e13dae384bca5ae2fdc8. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/BXOMF1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc98f3355aa700bf6913aea83ad2f715f7ef03531d7fb99ea8d8e33728baeeb. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/BRMUD2000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a30f3506a160635b1400e008071956b076eca9e90a0dc72d111af950bb9d36. 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/BRKMM1300050.
Nenhum Homem É uma Ilha (feat. João Cavalcanti)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c38b13f5f7a73ad3debac4d13d478bf794a056388d50e0b1946f4618e1a8c5. 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/BR4MD1500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3372ceb415acbaf21eb08eafdd66485bd2ed8e0fb8bbad5dd20cafa83a1bb8d. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/BKL432300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed992ed44f5a95d4971336ec6e4c1f5927fd5c5fe1ba5d80465f2851bfcb8ac. 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/BRJY11700003.