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 0x38ab63e13a5d803abea41020f7f9199afad6cf5d3be52cdf6428371ca812e52d. 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/8e7ef749-eb83-4918-9fad-28f138e4a8ec.json and https://artists.proofprofile.net/proofs/artist/8e7ef749-eb83-4918-9fad-28f138e4a8ec.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 0x2c65585a8d8782520bae16c03045ad2ebfbca826e9ff9eec856688b5c76985c0. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCAEP2048870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c79f7169c291a233d04aa9d301911bebf089790121bd1d04dfa2cc547f72255. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAFJ2172711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9125f952cbbafc80e4dafd255387d15f52b536e0b1df1219f05ecb9394dc11ca. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:37:52Z), 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/TCAFN2191404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51b3fcb26914c21fbfdbaea06cc5b52c2cf71692ffc0d366511c003c8fca44d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAFN2194259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17749879be8deb715757d31e6e308ed65f6a632907015181f703d12e6c2d5a9b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAFN2194271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57be14de1fa36c68830475362ec0c9685d1da768d651867e09c5973933fea8c. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/TCAFN2194285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5e04bf1bec0fa23b9d0b8eb90d482cd389bad735cb8b87dc35a8f78bdcae59. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAFN2194299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366238b0eb29c69e906930b7cfbd55896673b6f4aff845ef96be1f1fa6f6ab6f. 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/TCAFN2194328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f8aa46f8dc839bb7f29a306527ba64333ec8e9d8dce0afcfdca06136ccda74. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/TCAFN2194405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc689080e64d9525a6a748fe9abcf36d9e4725072f4f2963d9bb5f7a1186dc216. 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/TCAFN2194418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbea15e092f838001332f839f90ac6e5e692bdaf3ffda56963406eff6436033b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FREFR2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8420cb08ac29e39c0622f33a061f6c1af94ab6de4cdd4b2e24cbd0202d256fbb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FREFR2300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f0e9c66b92727ddc8a2a545bb7410b13de53adba87a9be1fb0fb2f6f805ea3. 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/FREFR2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbea15e092f838001332f839f90ac6e5e692bdaf3ffda56963406eff6436033b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FREFR2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf661acd60149ed2f5aef7d9f36bf7651b6addab93584958cbb6314775d593ce. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FREFR2300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfeb8c5be0e30d9fbb829d246258c4b551b6dbee8130f3051fafe0dc6a3336e. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/FREFR2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe436006ebc74547323b7139fed925f7b950e5ff2ee417086c4026e85a00d067c. 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/FREFR2300590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036d5df8920535b3700a3e9793e1fc6fc420806cdcf687a02a960edc245dd69e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:44:08Z), 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/FREFR2300660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b039f91856491cb847402ff58188e5d1cf0956c301ba28cfa0a837450f16a0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FREFR2300540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad091760038952129978451a9798ba9dbe84c821d425a9f224c0aafa0fe65a57. 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/FREFR2300560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28127b846d3d8bfb828ba4ce97a8b8751e5e92cf8c90f065ceba3ffc559f3eba. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FREFR2300580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9eba71dd7acbf0a5cfdb2688bbfaded8cbca72e5100e751cc9b8db203db1b8. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:49:44Z), 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/FREFR2300600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc04e257982257202574f4c0c7fb88b5ccf75217a6f6cf4215b0907bafdebbe4. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FREFR2300610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103370395ba36832d4eaa7a1fd9ce8a8aa80d1c5fb7771b6848bcb06a6545cb4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FREFR2300640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036d5df8920535b3700a3e9793e1fc6fc420806cdcf687a02a960edc245dd69e. 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/FREFR2300660.