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 0xf28be1dad5febc7c9740d3171a6ae059b7f8a357d28ec61492939c5fa7ee6646. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9ab50da-f8e9-41f8-969e-97fda6539ce5.json and https://artists.proofprofile.net/proofs/artist/f9ab50da-f8e9-41f8-969e-97fda6539ce5.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 0x14705c0a8c5e2c2c4bf316a6dbbc3b31765f6dc7bb0331284b0bbf4193aac745. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:50Z), 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/MXD782102717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1814f06c107d490d53d84242771e82c80ff38275a635ea7b43b4f64e1bd2d74. 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/MXD782102899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecea5c6e9097a2ee73aae1d26938ec8d8510f3899e21da425e5e97b77be4d25. 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/MXD782103067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976bddb6d008f3c0c36becec1af938fc25d4b037e637c77fc8e72ee7bd9868cb. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:38:40Z), 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/QZMZ92472296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44911bf264e2a5dcabdc6fed74e7bec05a68d7e281484453882ab38d44b9ea2. 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/QZTVM2318057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d832b21e0a8b1fae8bbca8794232027860ab46a610a7578de369885b473031. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:42:30Z), 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/QZMZ92472297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ddc66e706076ddea59e08b8f2feebc78a4245bcaaef455343026d316b83933. 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/QZNJZ2374223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad58e92531e7fe757e6d6e38543234c46f6b3e4b189426a3a3269bc82b5fb6a. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZW9L2378951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa415a417c89209cd8f82930a58988faebed5b843d8a974b4cffb4f5cd0a1c1de. 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/QZMZ92472298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2d14e37611e1d647beb260da2961fc628313c3a458396717ef21fca0c32119. 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/QZW9K2288963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ec636417b19fe3f3e030174283ade5e9c0c3360276c33f2aac1a0d309f5ec8. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:38:41Z), 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/QZNJY2322882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976bddb6d008f3c0c36becec1af938fc25d4b037e637c77fc8e72ee7bd9868cb. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZMZ92472296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44911bf264e2a5dcabdc6fed74e7bec05a68d7e281484453882ab38d44b9ea2. 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/QZTVM2318057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d832b21e0a8b1fae8bbca8794232027860ab46a610a7578de369885b473031. 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/QZMZ92472297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ddc66e706076ddea59e08b8f2feebc78a4245bcaaef455343026d316b83933. 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/QZNJZ2374223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad58e92531e7fe757e6d6e38543234c46f6b3e4b189426a3a3269bc82b5fb6a. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/QZW9L2378951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa415a417c89209cd8f82930a58988faebed5b843d8a974b4cffb4f5cd0a1c1de. 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/QZMZ92472298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ec636417b19fe3f3e030174283ade5e9c0c3360276c33f2aac1a0d309f5ec8. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZNJY2322882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5524632ef780910f25c4bdec7f1938dd3d78e45dc8560fa1fd3765998ced81ee. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:06:33Z), 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/QZZ8A2595523.