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 0x19dfe3fa61b1adb9998bad60b52cee1583504459e90ec38c205045d18646b6a1. 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/c6d8a11d-d8b6-42ad-9bbb-0ed2eb7fc023.json and https://artists.proofprofile.net/proofs/artist/c6d8a11d-d8b6-42ad-9bbb-0ed2eb7fc023.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 0x3215f385d91a78140e5dbea20203cf96d880fc52165566f8df7f4537c125e93f. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZNJW2058901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ceec7900c9fdb3288c7a7a9432a0ba2b85331248525d69f670471b6c236121. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:09:43Z), 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/QZNJW2058903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c9ed3825e93c5281b5ca4b7749467b617c17c7b90be090b1bb880446b67452. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:15:58Z), 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/QZNJW2058904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0e1b930d38eaec427c60342cec98fd885ee49c8862534308c77b0e73f86aa4. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZNJW2058899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d30180744800517b5643f6bfc41c076795c148057ff0501bb99feada8ed632. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:34:09Z), 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/QZMZ92450542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869a24d8986b6cfbddf7e18120bdcafb5fc0842a97df8d8f1957df0ff841a146. 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/QZMZ92450545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe01ed408eb8e5fd1388c3e96784e9f43d104423e90c1c07d60b7662cf7a27fd. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZNJX2000273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb155c0ced19f6f0d548d3efe2046ffdc97d16f8189466d715c4b74dde259244f. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZNJX2000274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966604c6261bb514902e4a2e9cfc782a4de550f970ceb8d78686120dfa03f4f7. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZNJX2000275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe01ed408eb8e5fd1388c3e96784e9f43d104423e90c1c07d60b7662cf7a27fd. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZNJX2000273.
Nhac, Nhac Eu Vou Te Conquistar, Vol. 5 (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40f763045508caf801603e86649a52ba31ae88c5261f36ec5ba986ff0c65b7e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZMZ92106512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8057693d6ff145f8761a6480c8a74dda4a8393fc1e1bc564bb6cb1177ec2a69. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZMZ92106513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8057693d6ff145f8761a6480c8a74dda4a8393fc1e1bc564bb6cb1177ec2a69. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZMZ92106513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c83775cd2d0abd6ca427b9ecd6866fab6bd66e9a60f76fe9cfc48ad4f6e711e. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZMZ92502893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebe11e1bdb994eaa350055cc501ac36f437d700e739e31251e802016225fa77. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNJW2220974.