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 0x6c46750b758f50155afd59c056fe5070b31c030caee88bdf9dcf64777296d80b. 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/7fee2809-c4d0-4b66-8673-91d4c3a868de.json and https://artists.proofprofile.net/proofs/artist/7fee2809-c4d0-4b66-8673-91d4c3a868de.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 0x5c02e2dce91643ba2d88047020221f80196e30b928075b735d2cf50d1d98cc61. 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/DEUE22119397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4cf3d2091a6440d12f498457e2d669fb990632d5de74523e93d2e3a5f38032. 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/DEUE22119398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cbaec76e6104ec45d1caa589e2ef26c7a4a5ec2658ad7c08bcfcf4caccc41c. 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/DEUE22119399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1143448d7fd58c61e7b39c49491cd3b9ede576f3d7e7f7469da0780b9cfd9e5b. 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/DEUE22119400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72aeb9354ce89e4f76592a1867382d43b5ae231e281c72def66a45433f98fb6. 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/DEUE22119401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f88bbd8ee1e1b61ba26dc7d1484fda29961d45718ec826a8657dda1e5b1793. 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/DEUE22119402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd99608229de615023f9da9d0eb3054fe653a13232942660048cccaf9e0cf66. 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/DEUE22119403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032ab06ece7de300685980755647d7c5987dbd2bc28aeaddad082107b50e2d15. 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/DEUE22119404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2488ec812d6d2133829b3dd430e8301295d3bfba6b0995e848af9786094fc8d8. 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/DEUE22119405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe994fdf828268290999619bb156e324cbfbd4ff01a96a785a7e7693ba3c0d349. 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/DEUE22119406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610bfaad3b3bfa075f1d095ca6c665b63fa46947d032821503aea3c555eecfc2. 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/DEUE22119407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa97749dffe86cc3bc90a4f398f40ffb730b1a7885b6b14c20350aff8950f20. 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/DEUE22119408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a57af0d341805de29cc7bea98709c6c8712a0dc904f9e34dd40368c3fac86ee. 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/DEUE22119409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156dd45ebadf2ffdf20dc481d7d35eec3d7929473ad75fe5a2ac444b41d1a005. 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/DEUE22119410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2f792e1fcf254078944120b3aee85ce633aff7bd87627a26d6b6ba5a8f0c3c. 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/DEUE22119411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395b8fb9216607aa0c2b47331256e43795b140d9e530ec968c22259036264313. 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/DEUE22119412.