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 0xac0361643ab522ba5cc3c74ea0f94622f52846ba2fbbafbd0700e1acd84dcc0e. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dcba2f09-0d01-489b-8402-601a25b4994f.json and https://artists.proofprofile.net/proofs/artist/dcba2f09-0d01-489b-8402-601a25b4994f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Uplifting and Upbeat Corporate Background
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 0x3ffa7dc15059b2cb59bea9833fd906ba801fc9ae6fc6d3616f5bd8869975f061. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZMEN2258330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbdab0e7d92ce77ad32c40eb45e7c454d7978a7240fe6485f5fe6bd2f93b32b. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZMEQ2290934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f066ae030535645e080422a77c41bd2df5a6fa991db84e7c0b26c340e9727b. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:04:13Z), 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/QZMER2230356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62aab4b61b6b22d138f15de135296ece2df87a63c4770bec9f33d7b6aa5448a1. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:22:16Z), 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/QZNWS2280014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4cacfa9854a7ec61d072ecf8ab3c3f95e77d4beeed3baa27b5dc60ab1755cb. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZTBD2399086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a367540caf465fb65a4dde20f9efe2403df05941fd74ec222765f35267b915. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:27:26Z), 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/QZTBE2333052.