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 0xdee3f1576be0db62d0d7be873911dbc066817838a1ce529d479cb8948823cf72. 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/34285564-d1eb-4616-bc0a-4a58f8a4e451.json and https://artists.proofprofile.net/proofs/artist/34285564-d1eb-4616-bc0a-4a58f8a4e451.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 0xb17d0dbc5f382bec018c01cc02cdb243c801be01566d2a588f2c1e215c93fe5c. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QM6N21768456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857a983f57d83c1aa57866273ce96b2837cd828d2cc5f47bb652164a36410156. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QM6N21768460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e787c0c9c3073cfff1c799b1ab4233a7fb867cf954b0b39040ce1ac74cc0820. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/US6R21503869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0331892390dc2786fae2ab4fc1f37e70fee2c3f451c4ed6f06f93120422f5978. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QM6N21768458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803ca55c8a4bb36b5aa419cf86845e369c3dacf4372bb69b30cad5ffc9aa5fb9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM6N21768470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eec53e0b2b998026df4651eb16d62ae96b011a1d0a84c29c591768b41416715. 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/QM6N21768464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa6dfc40411becdb5b8ddb80be5ba46a25f908fe85605da9b300643e8ee27a7. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/QM6N21768457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976937d2322a3a3498cc1e0832003c411914203f8dc0a7aaa8f805030bbb597d. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:31:13Z), 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/QM6N21768467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26275315effd6238ddee6b2cbc45a6a8bb66653043ee28fc21d4a2338d49e8f2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6N21768471.