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 0x1a6e25b5575ccdc44478d22edcfca88f2475045f6cecd1eca59e206306155d1a. 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/31bdb31f-dda4-4dea-9ce8-0a25a856223b.json and https://artists.proofprofile.net/proofs/artist/31bdb31f-dda4-4dea-9ce8-0a25a856223b.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 0xc1041dc2273a1f3601c92d142764d7668ca5210e6267be36fa77cd1f4e203eb0. 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/SGB502340637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27475cbe93debf7d57b6f6e5405c6fd8960f41ad22e69cb115ce72e791dd7e0. 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/SGB502340678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b289c8102fb251e81d311b7d0ff7706a494c3ab53f09b2ee39425fbf443613. 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/SGB502348990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653cb80550c19ba6b41b0be46d77f2501ae84113eceb8f0821ea0ea5a1dd23c1. 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/BCKKP2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02944fe39c7588210467770c374aa9410a6d7995c50becf02044fb2fd692a52. 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/BCKKP2300068.
Mas Existe um Lugar - Slowed - Reverb (Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a607ba20f8d9287058ed751c89fe179fa9ee00dd4a548232fccefa5360af3f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BCKKP2300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97259f1c33464b97ec4da7de8e299213c832d05b0a9b961d05d6d19897376828. 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/BCKKP2300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf2d81f8fab440aaeb1b1fbb4e6062a7d039352e1bce384eeec93e8342941fd. 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/BCKKP2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1bb05b7b072379b8dac4f42e33eb8b9bbc8aed022eda836547307fec2091e3. 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/BCKKP2400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f35e6f2c7c5c48fc5078c57fcfed62fc96cb25113b36800a19aede83973d7e. 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/BCKKP2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b80e8cff7a17e2197e4c22f0408d965bc50417091be36d9dec9034a1f284e4. 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/BCKKP2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bca6d4623b42d7c9a87f1aa8ff732f40ea8ea6a3701ddfbd8dfff080f2479e5. 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/BCKKP2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ad6c0b5f54afe0d4c14142423670a9d7f01d9d1f6bbf06a7fc173f37849a60. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BCKKP2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95870c4b9d25e0219d2231ce16e336829ab3b026fc0f50fd766ff6e2e9a5d2b3. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BCKKP2400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64922e0234035a4776deb2953d05316a440a6a4a329ce2dc1db521e35a82821. 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/BCKKP2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28f0e7fb5d1c55239f6ffdf84e8e2c9968b85f7588a9a8e1fbd52abc1e2b84a. 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/BCKKP2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f35e6f2c7c5c48fc5078c57fcfed62fc96cb25113b36800a19aede83973d7e. 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/BCKKP2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf2d81f8fab440aaeb1b1fbb4e6062a7d039352e1bce384eeec93e8342941fd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BCKKP2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd83af65b0848d25d29e4b75bebd3f6b8c72e8c55552c1b2f567dc1b9c4d6a1. 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/BCKKP2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bb0d70e0eea14a2d7b2a5b6401cba77f2e79827b72e1587e0e8e662f658306. 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/BCKKP2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c048149adea51c3d77b7fb4541346e6c28483ba531aa6181b559a89c48a920. 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/BCKKP2400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6da288a36457c488ec4dfefc29e6dbdd65adccd2c8d746c54264df27751c0c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/BCKKP2400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddf71fdee09723b85124e34203291963984440cde22171766fac23215a60a77. 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/BCKKP2400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f261158fcb6d85bcb2ef7a5ee27c65cf94cdddded74722cbe13d80b31f6e97. 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/BCKKP2400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf8524ef5c5bed88be7f68b4cbc4dcb38960c08eca9e073c1a8aa434fdd4331. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXKG22301252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2340d50c115defc06fdb28229364c683b50cd0572fcbec4d9ce4099d823fd5. 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/BCDFI2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64dedf457785791d6cbf79d0e45a432f483633328d17257e3d7e8cbd342d1d74. 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/BCVS22300005.
Mas Existe um Lugar (feat. Cryzin & Kaio Vianna)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f8075d617ef3cc487ec07a9dd2dda3f737f161b10f366320927dc130ff1805. 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/ES47F2300262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0218bb20de40113734883d985e348e8652bc21b1d4eb20c024de52bbc78a66. 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/BRUM72300476.