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 0xf1e19289f5d79293976d2e0a702cb80f6e52cc47a3e8fe466c153709cf77cec6. 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/f9d626e4-78a4-4337-96ce-dba219851d72.json and https://artists.proofprofile.net/proofs/artist/f9d626e4-78a4-4337-96ce-dba219851d72.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 0x19d106b43ef383f6ca2ff4cc5786b3f9e0b80c6d6c66414252b029cd73a6ee92. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/SE6SA2363195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854d090c306571bea7c871cafe0ff4625e5dec2a8dfa49b873c36550327e8889. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:56:04Z), 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/SE5752406336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6e78466aeb294568283193a29af96e7e27d029df71a9150adf7e5edbd93c98. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QM3DF2406181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f49a2413c9d048faa68aabdd0a2c75cdd2eea989327f07c89e61cef7b652907. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QM3DF2406185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf031f347f14495c05d9f5fa4dfe8c474955c8764c1718f1d73aac85ece8425. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US3DF2500980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4144f129ccd81f80a78b03a7e3704ec8cfdf715f6c4596c2e1324cc93aa082f5. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/US3DF2519945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b011c76254a5786a289b89524b71196612952b60421a9275348d5e8995e1e4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/US3DF2519946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecef79b5ca49c2232e6558cce3c160ad3868ee4d8ed6006095a337877365fc20. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/US3DF2519944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4b3c5a6b716744536aa78127d2dda17028585ea62e0984c652666669be44dd. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:41:50Z), 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/US3DF2529371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6807f9645a6673af6186a1004c10be341306bd807da0a6110d15315753a6cf4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US3DF2529368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3db9ffb9dee6283f8ba4bb75329b08268f8fe7ab2126b91df36670d72c576a. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/US3DF2532214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4456fe6a02dc153129e51267455360a0ff6fbfacf9294d000f12f6e957002b56. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US3DF2532215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0783faf8bf03fa5d68970050b72387cf78a8cba3fcf66b28f3d3d51c0dc27b. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/US3DF2532216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12374efaa72c7e59e3e10f5a76b6b8adf0b36e68512c9be7af346f003345439. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/US3DF2527853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316ca8783507c3a9bc977fa1ac6392ea384bf1d80abce09565d64199f407ad34. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:04:22Z), 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/US3DF2527854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05fd121e9a1e1a604275019eb0bd8b7cc08f5e930f518fe0030cdb365b0a71f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US3DF2527855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0410fe948edb87aa7796f40de34ed3e923a6b07c5e1d076ed6b465a8fd1f5b3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US3DF2527856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c22d5d2adf8433eac09e1db23c6fd1dd90969a46ce804e5b626b57962fd553a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AEA3A2579677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cf90d0f4a5fe6d8948aed9d49e473584d92b7a300b5991fec8c6076e6ac79b. 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/AUGBT2505616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7c894b29640df806f4503d3ec07f388e2634dfaf29b8f1ec2e931ba09d8777. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/AUGBT2505625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5e968c610f5ecd62174766022a450fc1dfe4250566f52e2923631f2c14b803. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:43:28Z), 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/USANG2501054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338d54eb7cea0a219e2c644cbfb60151c7b4803dc2f6636e0e3426269f301cb3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT5M32578650.