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 0x14ba287bed66ff068292ddb26f515bf5447f99b35ee85c5844b370738315c0f3. 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/05b84898-dd14-4263-ae9f-cace5044eb2d.json and https://artists.proofprofile.net/proofs/artist/05b84898-dd14-4263-ae9f-cace5044eb2d.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 0x631952ba88b0c37f054c9f9dfd0f8f9fc78be5d8ec998691ab773bd2e5b63597. 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/GBSMU7271017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd4446f41637c62fad49ff97b612b4313f0ac17cff0c1a96cb625b2645119a5. 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/GBSMU6374054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba179be4be4aae81f5e1f523bb4971235559018110af7831c6052f003ea29b2e. 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/GBSMU5820403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434b0e04a0882855eae7e16e966090373351f2c5f12ec662cd1ad49a179cd39f. 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/GBSMU4110460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0645a947f25da40a48619f497f2df26ecec0a1638d0825c4614875a10204873. 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/NLZ541501045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b38adb6b4bb246de5b08753019493cebbffeebf38e74cf85b91acc10e0cd838. 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/DEL711410242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b6d8616f5bfc4e7529134b65da7fe8099548406ad4bbdb682f8fa0c0b114ee. 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/DEL711410169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b6178999cd52743240b7075ef9779db18c52fd375c02159bcce9e1001509ab. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEL711410244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2922f9453a8923b853dc506b44b99dfd02c5e6ad3486c7e2d58919d8c14c3d47. 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/DEZ651349399.
Eternité - Liva K & Matvey Emerson Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed92ccc80cdff165adb84ff5558ac4fb986f31618c40a8dc943d03818ccdf6ec. 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/DEZ651349400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce62937a216c5f3452cd2a4bc973dd5fc3f4d66c51ee5e037132edcb88d12d0e. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DEZ651349401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30403c2e554fb4a403e3a1cc4d008eb6745e230d6fcab3fb637a2fa58b2d457. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/GBKQU1442484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c70e1eb5ab5a771a18560869c07b3033ed387accb6d1540749d8b3934027b3e. 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/DEZ651319456.
Move It - Pat Lezizmo Dance Like In '91 Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb64f68f32b4484fbf4a7418d821c3bff9f8a0b7772bfc2102b1259ef713b17b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEZ651319462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40dffab9352a456fa81dc6e02e9d01bdfe7b67241ff810755ad4c77e0cf9c3ce. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEZ651319458.