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 0xc7eec4a6c35734fff628e2da44358161d4af97134cea83348e28aac9b7967b92. 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/c4786474-904e-4278-90cd-c9eb6fed4692.json and https://artists.proofprofile.net/proofs/artist/c4786474-904e-4278-90cd-c9eb6fed4692.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 0xbe04144bd1bc7c770ae38fdb1aa79ab72509550124f4c5881cba7246a8c595ed. 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/GBMJG2335359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa88f2b9fee59c1cd280b2f2fb0553eac52ebcbdef0b416a65d5b3f3c9b5d2c. 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/GBMJG2335360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118d889a3ee14f7047cb4b646036c5bbfbaceb8d55cd55a11a1f38e9eafb230f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBMJG2335361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc6f30d5e412f30cb1d6902df6e94e25719a8aeebf487a67d6f72c933999ba7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBMJG2335362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869b7cadd238bd61e42b77ee290ad3c29be1eb62dcef091ea443396c94303429. 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/GBMJG2335363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ebbd15fa8df73bab4c519fe28f9a7c71204ddf2bb73a67d5c7c76d05e96b71. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBMJG2335364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdd42f70fe9d4b24cb432439ffd877d691422894df13cf363898a21f23d3317. 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/GBMJG2335365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2db2ec53c014d0bc6ac8ce36e255bbd4e8c11179ad29035fe5ed50b618ccad3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBMJG2335366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803e7f413c03d466d1dec3513a87643b2d85563fd9dc92f1d2bea6f31794ca9a. 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/GBMJG2335367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb529e624853a67bc934699822f64e7ac452240e5884e7c702bab228f4d9bae. 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/GBMJG2335368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5af3f2aec07eda8a79bd1045e8b339d43c7cf1f55e718d9d96b9a8bf78c2e9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBMJG2335369.