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 0x26f0f26f5954e0b12975b9bc265cb2cc916111200b0e031dad34960b5978fb2c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d61bf878-ade2-45b5-b666-8b2b5d0af9ee.json and https://artists.proofprofile.net/proofs/artist/d61bf878-ade2-45b5-b666-8b2b5d0af9ee.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 0xdc8e4829c5b3e5908a8e693a07c1e5060f652d1928c4d4283d635376492c572a. 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/BXV3F1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058994860f699aae57aa3aca52d13e8034e60c66efba74301eb07f084b166c04. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BXV3F1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41928a37a2da4d2cbccc8653278dc372b56d23c1c3e3bbd28918fdd663f67380. Chain 2 (Bitcoin): anchored in block 957826 (2026-07-13T08:56:09Z), 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/BXV3F1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1ffcd5b5f0f22170bea3290ce7fc35a921547aa15a5209217e5819e14146dd. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/BXV3F1700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363d87f479b925e0d3dbff3cfe4199f7f6ba1b0955e7809bfb26c0f11fbfc31e. 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/BXV3F1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581b041ae7d0b62b9d1f6ba2dfac86be539094b3d7c431570d8bbfa7a20d3d3b. 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/BXV3F1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8baa32df42f778c6c55259a58b2f32847244e325d3300486b261e0c3fbfa7e2c. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:42:31Z), 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/BXV3F1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7d3398e15060418474548398472343a74511bb1f99eb77d1ae657feabacb88. 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/BXV3F1900030.
Diabinha (feat. Diomedes Chinaski) [Remix Brega Funk]
Diabinha (feat.Diomedes Chinaski) [Remix Brega Funk]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92ec6af2bd35f9794b4686e221795c5f70ab11e5dc9f5064ddeccb8590bd4b9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZEQU2054556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed82b1df4d8c1387cd7eaa0d4caf985b8b6edd283a39c89baff0e5da370c3d75. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BXKG22000264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a548b82879223269a7314c406ea478678a03995b8c3c5982c49cf02774c0c1. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/BXKG22000262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f7c92f02d1d1cdea19793fa20eca520e257f88e048a578b3aab5c60af82f0b. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:52:37Z), 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/BXKZM2000665.
Jogando Xerequinha (feat. Mc Morena) [Brega Funk]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc37cd5fdfc8186e44d10274b2a699eb316052dea513b0829cb3ee83303c540. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:10:00Z), 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/QZGLS2274285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc18466bb2bfebcafc77bdce2d70e99077a14643366bb648504687cd1a59607. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZWFM2462099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c19331231093a43089c2d11143383866e5c42492ed9d8dfa873e630d6ec172a. 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/QZW9K2436105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01133d1e5da6e9fdde905cacce3fb0a5cccd985b99773c7a0e62e083ab0bdfca. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZW9M2403983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b919d8134a734b44bb89f1d1f8b439dd974f60d269734e35a9b646686b0bc2d. 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/ESA112566127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87df5d19c6bfc4f31477d039cc5a9e5473182f50adf7f46c628c62ee21c7c34d. 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/QZTVM2506197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87df5d19c6bfc4f31477d039cc5a9e5473182f50adf7f46c628c62ee21c7c34d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTVM2506197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec05bfeafb1388aa781e19db5f8dd7fae191db78a8c9319a24124bb1c006c24. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BR0P72000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916f5e1cd175bfd06568136be45c0e6d485f20ebc1e4957aa268a3d638759145. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXV3F1700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92d2b9b1e3ae6ecee2ab3f41c6ebc5cbfda3fd453b4676d1a6b7e9b37c7274a. 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/BXV3F1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6d762cb886f619941357ef72b121cc00a0c3f11b81e28bdc5d65381841fcd4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRWMB1901543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bb084219b5aa5ced4cc449edd0c83799aec5a4d695071583fc97c6ae44fdbf. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BR1H62000003.
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 0xae301c11adbe9761f5ba0f4ee645bea12336c942ed22201e167ac37f57d1bcb3. 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/BKTTS2400089.