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 0xe86f008eaa5c1d8b7d8ff34070e3d4931f394280ef59fbcd6e7a33bf27edd42d. 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/203c2c87-94d8-453c-9e0f-19def8ed9a8e.json and https://artists.proofprofile.net/proofs/artist/203c2c87-94d8-453c-9e0f-19def8ed9a8e.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 0xe4578fb051081731487178f48274c4ca0ea3e3ef87f8a59016fd76b2aba60877. 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/USANG2434022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61451bcda0ece7fb0dc6e6dcf1668e1d78d2d6e7ddab3537fe84aea70ec1c30a. 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/USANG2434024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2122d5205f529596ef3b5423e7b77effb61c099a91f1740e21d5df0a3b3305ae. 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/USANG2434025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86a9dc5b7c7478411d8c7a8e97554025a2c53a232abf7dc1ff36811350c0eef. 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/USANG2434026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac3ad161a596686f9e9ae28614ae318b4017705b3a64ffc9db8f6507d8b58fd. 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/USANG2408585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2a0082320c7e46035f097d13250bef0a035996328687154544717cb5de6e72. 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/US3DF2459304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a39d31e633fa905252c02070c262fc235bf5eafd0682cd530983e9cf967fec8. 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/US3DF2424763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb368ef7b1ab124766c01dd5e483f2d1370e751f01c36d2205640a892ab4ebf7d. 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/US3DF2425293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf721d338f5884ac98bb29374c37a0b55e5129152e951a552849eb9a7896ef176. 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/QMANG2465462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf197e652322209ba6365e247dbb5c7fc09ac5ce1b270b244a7d41360fdce4ee5. 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/QMANG2482515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd6e704e1a6a859979613b8139e01fe0c0b74ab2e4d85abc3d159538b03c017. 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/US3DF2420785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b482ef1ca4168c74077f9f8c416da64bad598f14e1dbee5e2672ccf9d10ca1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMANG2450252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cad646eeda02ed2d5591ed62749598e428b3e1a229d030b62e5418206d4f04. 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/UKZGC2309662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819863114cea8a1178385927818325c7cb270bb57924005e6d801b5765e0fa62. 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/QM3DF2266071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd039026835da877cbd9ec6abf36fe868bad90d2e2e8fbed089c4064a2f764e06. 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/QM3DF2261845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb028688f1fda39e7a6833b3de2641925cf41a7e38938069fedf6d4cd0d6a2a43. 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/QM3DF2261846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00d3022062597d8ca927b497b9cfc3c030cdd31cc93ffae6d2fd7b81ee8382b. 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/QM3DF2261848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d20e21a92307f90a1c3ccccc16719ab30addd0cfd3bf09461dbd73b4e30e73. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QM3DF2261844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7f6c63d8aa17fe9fd84d2411e3e8eb4100d07060946f704f7f90eab0dfb8fe. 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/USANG2276991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27c0c62df855bc092ed3a0ae21fb18bc318aedc94abfd1ee3ecdcbee6a02b4f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USANG2271312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9ed355b69408e85c1ad983fa3e0ec635dbcb60ad0612a497e647ec34fe97b7. 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/USANG2271313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c4a997c3ad532cb432b02e7289a3b6c2d33f14910ad90282d626923482adcb. 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/USANG2271315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a61643028e93ef8020371e1708ab61ca3d0df8ee2077f63448dde97ec414c48. 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/USANG2271316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038db5e56e97f7119166b0b94a2a29a6db13c7a5dd4f12f2accaf1a229f5ff8a. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:07:32Z), 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/USANG2271314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31193183a8040df94c3fff056d10817037f1e3b159647a5cfd2c122590df2e2f. 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/USANG2250043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512342e1e233fef357acb179dbf5e866ea5f84c7afd6842630423578fe4877da. 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/USANG2235647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a2ec8e21f08279c59514d9ae69f1e66a2d22dc2ed552b9a009d699b550624c. 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/USANG2227752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a970f82a47de6d3dee6abcaab453a73590a8b3b69572a6d3652a40b56508ea. 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/USANG2208261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41bb0f8478c466491d3e1e796d10c1d468e033fa45620256fc17c07aeeb5636. 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/USANG2216694.