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 0x6f35d7cb23d392a0ddc398559c4df5c56e8a17deb3cc8e38789980e2c672b5d8. 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/ed2abe1c-06f3-43db-87f3-e8231d93e175.json and https://artists.proofprofile.net/proofs/artist/ed2abe1c-06f3-43db-87f3-e8231d93e175.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 0xd46f850d0954d8515198b39ad5a1f912859abd7c8ac4e151866db4598131ada2. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:44:20Z), 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/USA2P1950388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41be37e72baba537ee6ebd024dad4736fba73f134ac1046f8b699babd47a9049. 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/USA2P1950993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19647c82973d9be8714468bb35787e58ee93da2c9d973282845b127db8d3f284. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBCFB2200773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c41c0c3d8c1b71995345870c2ad498224f42164bed5ece866851c4997b2a007. 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/GBCFB2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83dfa3532b3ddd50b31b4ad2cbdbd754399732a9f78f83124c78b9a8f44217d0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBCFB2300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6333f2b12892e49c070ee4a87285570dc33d48a70e5f486c905b201174e1e69. 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/GBCFB2300124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c41c0c3d8c1b71995345870c2ad498224f42164bed5ece866851c4997b2a007. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBCFB2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83831fcc65680f99553286622fc314b2db7ef8e48d1b0c591a5f27b96fbf8f0c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMDA62445777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d01b593c27fef37b35bc414abbf0d3a3a9963d22749be0c70928887c2f83bc7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBCFB2300087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad32e94e776344e1dedefb7ce02f4ff69d4f1bb652dddc20a3a46858964535b. 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/FRU702000256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5045b16d622593d77b62424958909db70b129b3114c4952cb2360dce90976a25. 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/USA2P1950980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83831fcc65680f99553286622fc314b2db7ef8e48d1b0c591a5f27b96fbf8f0c. 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/QMDA62445777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83831fcc65680f99553286622fc314b2db7ef8e48d1b0c591a5f27b96fbf8f0c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMDA62445777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83831fcc65680f99553286622fc314b2db7ef8e48d1b0c591a5f27b96fbf8f0c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMDA62445777.