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 0x12cca23e0759bd0d814a60c8b52ac9d56bd2b37fa720fe17a2a478e881aa500b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90bc4359-aac5-460e-a9f1-6a2824bd5f53.json and https://artists.proofprofile.net/proofs/artist/90bc4359-aac5-460e-a9f1-6a2824bd5f53.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 0x11996d104a186cb3f2dbba12d9b13a10986e97b3e7dae6f87982c13270ebc07e. 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/GBKQU2277339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6bfef5220d9af38ca735755e3ef51843d4924dc63a0e9a9c96cce40e5e1618. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/GBKQU2265119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6bfef5220d9af38ca735755e3ef51843d4924dc63a0e9a9c96cce40e5e1618. 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/GBKQU2265119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf699194aef9f75646918037b45496374335a950429cf5ca3d5e5de67be7b4c93. 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/ZZOPM2002582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577e759a27a7db969752a49adf56e68e864f81665eb12a7b08a9bc3f2c2c4dca. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZZOPM2002590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff240c0e8cc044be65049b2b02f9c21c6c318b6ceb8a9451f518164a9346a62. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/ZZOPM2002420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea74a3274d8942e317388ac8797702410306064836a328f1872692b2df364c64. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZUCN2201703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dc63266b27429e49a648e8020a727b8f4a8adbba39ee56a57d8c2c0a83c760. 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/QZUCN2201591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a06b757c3c1be63676f446dfafd7cbd05c49014489a0bec97f03b503e06100a. 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/QZUCN2201542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757fdf0f3682a9195a3d56768066872dc000d1eae4ad76366e999e1d3f8ffbdd. 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/BE5KW2400427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee790333bdb112d6347c845a0c93d27e5a93a296efba802f54c7b34fba780f8f. 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/QMFME2336711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5f853be1fafa36632348e2ce2c943bdce64901b4c764cf2ebba132d29a10d9. 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/QZUCN2200892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80644b03c6f18600a8b353e5106039b1f0e377738203e9bd8ab5432d19c3e4f0. 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/QZUCN2200858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d2aee0ae720e1b4d4ad14e7030a14db389c9a3fca3f618dcad300325988a1a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZUCN2200835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3bd645aba23cb9f062f75055660740a772df3069390aa43a648d8c698ea66c4. 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/QZUCN2200664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6ede2f036727d0978c74f3b77948ec78c8fd71b5377a1e9920c278a67ca5b4. 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/QM6N22333623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740122a8a9338aeeffc9bf18b7241b21e3b6acce12898b29ff2b31bc8a5ecf1b. 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/QM6N22333632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9140860ca579a09d79bad0195f435b2a4fd0283785e5c3a9d2d40acced24e6. 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/QM6N22352663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5082e06a6f61385e0ab4905ccc2b1761b9d1db3946e1193dd61ab0cf55440482. 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/QZUCN2200486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b815089ba6c6a9c4d3dff19dabec5c0aacbafc095d0332b177837e8bbf304b. 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/QZUCN2200403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2381660b73dacd7bf5b1f0b53e3912f40f32d9a87ed5ba8d05b4c14b0917518. 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/QZUCN2200245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dfb93bdc3cf0411c9de91582a095ccdd3de5f151cecb056fdc6a92de81ebb0. 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/QZUCN2200116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f0f06d5f883a42c65bf286b6cde11bea07e9041c82c3ec60a8fa6d11e6000d. 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/QZUCN2200487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b815089ba6c6a9c4d3dff19dabec5c0aacbafc095d0332b177837e8bbf304b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZUCN2200403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe119195fc78cad6bad7201a15f6373d8d9e5abb001d6e0074fcab6bd0899f2fb. 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/QZUCN2200320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2381660b73dacd7bf5b1f0b53e3912f40f32d9a87ed5ba8d05b4c14b0917518. 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/QZUCN2200245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2381660b73dacd7bf5b1f0b53e3912f40f32d9a87ed5ba8d05b4c14b0917518. 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/QZUCN2200245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dfb93bdc3cf0411c9de91582a095ccdd3de5f151cecb056fdc6a92de81ebb0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZUCN2200116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd42afcfdd6f97bd50ff9fe603659c9528d374eb6809fe97354db0be3cef0de1. 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/QZFPL2100143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c98681bc40e80f9b2c407224582dd023386556e5a740c5e51da728f35c26fad. 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/GBLFP2038903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf501e509eebd79435c6049f9dd67ae49cb522b73c26fec2a5e5cd3b4c1b416. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLFP2041750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c7faa35baaaa26520037a91f410817848f7ff5f6380eb11e29396e7157a858. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZZOPM2002591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205ad377ab1caf9e66a5204039ac6fb8b6c19f4445acc9b7558e2423f95dd053. 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/GBLFP2040581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf501e509eebd79435c6049f9dd67ae49cb522b73c26fec2a5e5cd3b4c1b416. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBLFP2041750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c7faa35baaaa26520037a91f410817848f7ff5f6380eb11e29396e7157a858. 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/ZZOPM2002591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f812a8345c6b381f2f6d7018dd6fc6f9300f89fc34ace944210c99bdef3c920. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZZOPM2002387.