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 0x03c4b1e49ef56c201434ab80936daac193867429a3b469639e60d5495f5cbcfc. 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/06c7a823-8b1c-4fad-b54b-65bde5822348.json and https://artists.proofprofile.net/proofs/artist/06c7a823-8b1c-4fad-b54b-65bde5822348.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 0xf28aa0bf667274bde06150a6502eb087998c58f8607ad37417d0c1900a68cde8. 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/SE5IB2333011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf229654e0731c3b07f6b6988132a6619a08194b3d09101a4b8a995188157b8. 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/SE5IB2332855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1daacb6a2e23a40e88e2e689c09504d082814601cb4fb84a4c7cb9f5635c9469. 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/SE5IB2332963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf769e8c22d5845b1654774cb3501f41c2574a584c0bf170895cddf3eea9f7dc1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE5IB2335167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65021533c59407754a61c98204ee10130963a932c09b00c9b4ff8298b3b572d0. 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/SE5IB2334111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6689d0cfd89b0d8c0c0eacea5350826562e13279a9d6af2ace9fa3ee01485002. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE5IB2338979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97016c16f9ccd07ab6864ff7c22de2ee88246e5cb365859b6013410ad7d12847. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SE5IB2341687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76033d0b2e82e8d2c79e6c672658b37ed59688994b9a5957b434549f8645a2a4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SE5IB2335631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c05e21411f6c9c1760c8a8af3c7a1c5a608f3f5d93ac65f879234e62720cac2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE69Z2414531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1b936f6576cd4545202af779618005da1720f014720155ed858ed2657f3689. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/SE69Z2401482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a6c55504ba8a39915be0d85df136d866466aac52c724a1c681121f935b7f72. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/SE5IB2405504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d9fc4dd6ec203e5f68aade9a10c190af6f8804248b69296456bfd53767090a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5IB2319639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b13442335740d81a27ce08dfc88a866d3cca7f65088b42a79120c4df51e8b9b. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/SE5IB2319619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944365268a1cb1e22f40406c773c701d241e875c68c800180c7c19acb18ce709. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE5IB2332811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c24a8fbcf5f199a51aef96252332437786ffb00a488f8a239a55bde991257c. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/SE69Z2415419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720c222dc0bd1fdb7ec4a5805805228a45f1049b45cd91f622e39f7827738a6c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE5IB2296174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07072211aa06cd58b3156d4d23c914a9d8ae77d5c0e86c3a13d0d17e92799f17. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE5IB2300305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a49d60d63c37e8dea9e331626405e326a8154e4c8b2c0a690d71c2df8b0a3d3. 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/SE5IB2342175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c8cf69719f9ce8a37a1e0fbd73a3fc82f0cfee0df36db2e920d9ecc7edf770. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5IB2332751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2976cd364db9e28d8533cd00d0b3b164c1fc97f73f8763ecb95118277de85bd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE5IB2296165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4684eb9a2622c76bb07699920f4161ef10517ac1942787352ee40b017520a9. 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/SE5IB2342167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abdc7bce47aa53d17389e14d0fea4e0141afb9d6a8f0555efd67002a7dedcf1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5IB2288417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabed7bb37da1cd37cc8a22d03a449193f506aa8ea846a0d20a3f436da47a7ac4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5IB2333003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2976cd364db9e28d8533cd00d0b3b164c1fc97f73f8763ecb95118277de85bd. 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/SE5IB2296165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abdc7bce47aa53d17389e14d0fea4e0141afb9d6a8f0555efd67002a7dedcf1. 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/SE5IB2288417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b93a952797667cc3db124fd73a1e1a97a980778bcb7e28fab72071f4006d1f6. 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/SE5IB2288401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290e342c9cf4ac8c7c1bacf45b4311f7486dabf2654c9ee09f8a6c7397028319. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SE5IB1901521.