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 0xfa0d6625bf5b27f975eee48b105100af5174962b2e2ef2ebc513b185e5c27a78. 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/96bc7574-0e27-4cb7-95ee-1e1751542bcc.json and https://artists.proofprofile.net/proofs/artist/96bc7574-0e27-4cb7-95ee-1e1751542bcc.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 0xea463b1b5dd1197735664132cfedff92f21639dafa5561f55d8e986d022340b5. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BRBC52100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca53af6ee53123c0ccc874152de919a50c3e0c0c23b207c94f1615595d2fa3b4. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:17:53Z), 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/BRBC52100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c48b5dfa40044acff712e0e0a7e871f3d54481c693ae92f0f512cbcc3e3f80b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BRBC52100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bf2b15ff3a2555bceaafbc848b3aa8a62f567c4d4c57547f0cf7ca9913d0b3. 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/BRBC52200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3befee05df2a851e07d5bd55467c49c614a28f4111f4bc476c7ffefd2c9ac8. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/BRBC52200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3befee05df2a851e07d5bd55467c49c614a28f4111f4bc476c7ffefd2c9ac8. 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/BRBC52200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14da83ba7d2c8f42b16e804f1c68fd0286d06193cc1390b19658b813d82fb9af. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRBC52200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cef60d25e944726ece4caccaeaac54b9ca80fea4c49abdf81e417157fd6949. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/BRBC52400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e41cd2155d30ac9f4605bd2897e83f5094526e0f406380f37bbf9c0d597f54. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/BRBC52400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e41cd2155d30ac9f4605bd2897e83f5094526e0f406380f37bbf9c0d597f54. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BRBC52400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb204c6daaf3dc8646e4bca8a5f10fb6f9a5fcff482ce1ad72b6f91f96d718f0c. 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/BCMKC2100004.