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 0x39bad527892c840e083f72d2b5991c572da307c8ce84f30c4d9db8497a7fde77. 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/9d0848d9-7b80-4761-927e-d0218bd3cb1e.json and https://artists.proofprofile.net/proofs/artist/9d0848d9-7b80-4761-927e-d0218bd3cb1e.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5add75a87559c1a58bbfd63300ba21e63c8ff08690b8d9d3a6498e739da18b15. 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/QZEQU2104507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b3008354431b001ea9086d8e746c88507dac44fbbe67a99b75233db47ad192. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZEQU2104519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee3a4e195eb0571ed1531e821ded3ea5442c817b324aa1f32700f95a1b7ff52. 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/QZEQU2104490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406248a38a9fb6f32575d6a28e98a205962f17782ad4fc75743046d1bc05bea5. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:36:35Z), 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/QZEQU2104500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21731ea2a0feb69eb4abcc1510419655895a50a4811a20f9098a0551f3729852. 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/QZEQU2104501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7476c596482b2291ddd15c3b7812b41ba0883d90aa12c98a4a6a757a9e2bee1a. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:03:26Z), 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/QZEQU2104503.
Pensamento do Vaqueiro (feat. Zezinho Aboiador)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296af598e528b25663a889a2abd072aa27f8b71094551f8b688c1f13bc82d328. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZEQU1918641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7facb1aeb4bf184a2cfbc1ec447a2ae633d0e6b3eb0cf3bae50b2ad0a377ab59. 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/QZEQU1920214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa7ac188a922ed3b75f89a9fca87740060731311b622624de40d80645450740. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZEQU2130367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5571f3db95398913c180c40946a4d5c05c56350b4057200ca61608eea547ad. 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/QZEQU2220271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674ffbf60d1ededd92226163d0e9f641aecac97965c22c2a1a1f97447a4b0d4b. 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/QZEQU2220272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773e05c26b448a5a372208e94a7e7ed71c16579cb4c042613fb307d87fc5e685. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ESA112306398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16f0f943c653f71f57dfd3b82ff6fee17961be840169e1ff527915a3c59b23e. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/ESA112306396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f30637f7c49f6a199e7038e7d38de6f17735068137929b8833f9cdf2c45a009. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:42:46Z), 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/ESA112306403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb553b8d3d2123b0e4dcf0ad14096349577e6bf7b766775c77d646f234ac358bc. 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/ESA112310186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df69450327cdea114f647f899ca8f7b559ac40536cf77c73e296c79c3282e83. 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/ESA112320996.
Filha do Patrão (feat. Iguinho e Lulinha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cf4cec34fd90228b2fb9f4e41613f4f9e4e8bab7e0cddf1da779f7cdf00f46. 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/ESA112428243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849960745c06c8e8222b2dbd7cc7af19479f581a493c22b1765c9d0b132a064b. 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/ESA112437559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28719e868bd8fdcc17d8ca6e14fa57f43ffec678e291457e7971fc1eb87a835. 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/ESA112437560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c042f1a5d9fe403f29857c7fca3689c2f404ec90c0b81352fcbbe737b9af42c. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/ESA112438136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a8708573954ffb0b06fabc03a19ddef34648d31b21965adf2d09c2dda4530b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ESA112440911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e42d4d84550b0b8b1082c62dee2a58d99b0fc77b4a4d3d7604e2fb8e6a7826d. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:22:38Z), 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/ESA112447411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf22cc65aca1e65fb5d7874b1d8adf5273a29837191996853989ae3b471d378. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/ESA112453715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25744b8be6fd0b2d2940bfb307a1d13d428aac570ee29a608f40c7b530dd029c. 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/ESA112567039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112413ce23a8cd9efb2d372081daf58f4b7eb91118ebf867f6bf62b451dfa474. 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/ESA112567040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238aa77b58cb12eabacc9941b06fdb7921c831797ee43f110885e9523e05886d. 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/ESA112567041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd0947f1066dde531c712ce2e09efbc7584fba7b1ca761f8f11735783ac5edb. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/ESA112567042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0199456ce44a90c3a8c17549a5c633d8a439843db1277a2478201d4ede5301c0. 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/ESA112567044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7f1c92890b5832f6a8bee357d6dac7a52adb5dddac2817a18caf8f7fda9fee. 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/ESA112567045.