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 0x363027253528813d9fbfd02a2ca9067a74e6d0715cb5286a143607c8a96ea0b3. 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/cabd9fd7-22bc-4b9f-8b28-07dc18e25030.json and https://artists.proofprofile.net/proofs/artist/cabd9fd7-22bc-4b9f-8b28-07dc18e25030.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 0xb9614eae9ed0323c578a9b54b65bb62f43eca10e98d50100363ca3a412af9ef0. 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/CH6542406248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0b801e04ac60cce4af689b1529c9643e12259d88738e1d1207619383caf539. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:09:23Z), 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/CH6542406245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6479fa2fa97c9d05d2febc1ad0618630a80bbb9eca796c02547136c33b5b813b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:11:48Z), 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/CH6542406244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8ae03cea9b122a453bc7c9aa63d55af040886db69f494ba159e155f31339bf. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/CH6542406240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4cc659a495a1ab751b26f207e196041f8404754d5b380a0e4ce400e4084ab9. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCAIC2496717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e331b30d0f9dfd2e67b824857802f50b68a88f2a2ad17c8d5df0c73f45d9642. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCAID2418023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88235f7abd6974d733c2c56761b9612dac98a579dac9775dd0ae818baa6b7bb. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAIJ2420028.