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 0x1396f0b14cee3d1b8dcf567311a592af1943822562d762783be4721cb94c09f8. 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/a414bdbf-2bfe-4e25-9f5e-2093bf4d4613.json and https://artists.proofprofile.net/proofs/artist/a414bdbf-2bfe-4e25-9f5e-2093bf4d4613.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 0x83561d5ef114a286c55668ac763f555d8a718dd603e9ff8996d43c89babb6a18. 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/CNZ682200288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6048aa0f69e0aab1e44496bb9fb56f4220f9893f41ed3298ce91dff023d27beb. 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/CNZ682200287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdba7884181fed72122d33c032e943985467113a8ffb6d325fafc9f88ff2734b. 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/CNZ682200341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007482dc91d9d40286c80649b7c646f4bfe7055c46ec76cb9c0da9e6a76c1210. 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/CNZ682200340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381ca1b70041e8013036766756519819dcf6169caf5b6416ed81feed23e79d8d. 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/CNZ682200293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77288c743d40e0b040b28e666e0b5375083be3bcf0f5e635b89cbf418d56169c. 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/CNZ682200339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf8cdf09ef6fc769c7d9efdffdb041627b60e6432a9b68eee520703d90019e2. 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/CNZ682200286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4899ae0e73eb1815eea15b6c4493c517dcfbdf95c4059a3a7690f9424dc1eb5f. 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/CNZ682200292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0121d3c93056a9a19669c7093205791e672954054e1d08b9f785006d94233bd0. 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/CNZ682200285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c809b8557469824df6355d87c246660bf3674896e16bd9ff95c31516313f61b. 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/CNZ682200291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00fcc1858f3496e9ac5d4424a61732ad8eef62e864f5ec236a52f92860d57ca. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CNZ682200290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be4b9a2bc05fee0e82d7c3a7c7a21ff34b92e238983cbeecb80bdb7df1276c5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CNM692100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc815e8f2672876d42ea335fc54f7a7d8f9afeabb1eec0a6606c84279e9818366. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/CNM692100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947cfea840f43f2a88a0477ad07b69ea06d8e8bc37608a79e61fc9f23f56d467. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/CNM692100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02ab8a96a5e39fecda9a54e5ca67e30d6a26d36c1a0418896613277eac7bf4b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CNM692100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08e12f5844accd4a788c2d12aac1bd05cb8d6fb276e944901a21e1e030c5901. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/CNM692100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aaa8203786d3bcb18d6c4838e3d023daa5b1ffabf030db5783436b351dd9784. 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/CNZ682000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa32c01df70ac97a98df9cd924db3a761550092baf95436aed7d5fee12ca644c. 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/CNC072100496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff11ade7694437f0724c3c64250bb7e34d9c97a7fb2be82f0d60cc6f71e2a7a. 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/CNC072100497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1e019196f37f90f5d508af4a0b7fe1d51f64a20eca4ee6b1591386d2831c31. 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/CNZ681900264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc330060dba45069934ee94a7e149ba0b51e51d5544c19c03e7cd3fd85d4ea047. 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/CNC072100493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6f89c5461f9f67eb9c8c323326d0849e5a4aa6cf81be4f195d0ce394953336. 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/CNC072100471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd99a2a0c2fec8006e6813a239fa7516f4502bda4b7287c9641ed9d591bb695. 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/CNC072100488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82068c48d0f2bd79dec92bdfc46b817af7e209a2ecd72f1c920fa3e328066c0. 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/CNC072100470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd09db04ea285ca65fd477a4e02c01e6d7c0b07f2b9205a4d919fb94278e2355. 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/CNC072100469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109fdebfed5912372e0e6583d53d76f2729357d045d19452624600302b07ea00. 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/CNZ682000232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e46cc4d67a23fec009d1d3ae2cbe6b576ed969743ffc2f709bf4f155fe5dec. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/CNZ682000250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaaffcff3302d6e328d94ca578b247c287e9c4faa0244efab58cbf3179810581. 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/CNC072100494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0be6bb88a0e4d8aa4bd06015840ec2e2073ed5a59ae67cc5d0e6e1a9de1bced. 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/CNC072100472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbc32f60950fb787319c4001ef516c1db6e52c1ef9ec3e9fd2d8cba1123c216. 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/CNC072100507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1889f1e817cdedee4763651837e998b52097c717dcba874ebdb8757a864dace6. 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/CNUM72400672.