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 0xb846d751a3ebc04cc37e56d952c444d184ed1ec08a3d6e304063ca0c4a5c43c2. 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/e45c2161-4b8f-4eb2-896e-526c9d60501b.json and https://artists.proofprofile.net/proofs/artist/e45c2161-4b8f-4eb2-896e-526c9d60501b.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 0x57e42be7814e6cfb53663d02f8dbe46677cb8ec8452ca86cf07b932f33516bda. 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/QZNJY2388014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50251c6eab99f69643e60b668329fd0063296a5300efa6d341f40d4ec957e6c. 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/US7VG2495930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f990bd0e61ba602e7f4f95f68e82d5bde05e7ea65daaced2a12aa48152a829f. 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/US7VG2495931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773be3541828e2d2d2e817a8a01cba8d9368c648517b8e30bfc7debc4c468511. 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/US7VG2495932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d51b57bb8858e760bf706179e06d8a1371d632665f0e98c9961b7bc1149cbed. 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/US7VG2495933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd9891856f0e0a70bade98d7aebb87d1898e24535018d8c2e2eb63f6d464333. 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/US7VG2495934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc193211d41ed1902ef2e96858a8058078611a101e02f969e73a64a753d33ae4. 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/BKHD52400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4b2a5c49590c7cba6062f81be4d9c9a55ff663e22374a27d80583361a4ad91. 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/BKHD52400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c52a46a475160d398ffd013a64981d065900a75081303e1dd8ea2de3c3b6d83. 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/BKHD52400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356978249496ff74087280e6053df339e498dbe8fd91a7a3ecd875ca196af5ba. 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/BKHD52400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315faec0ca93ff12c491ec8348cd82a2cc223c5fb2714f009e215e7f0fbdf10f. 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/BKHD52400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65783f0c9c48d21d2f518590132d30d0d6991aa483323bae89e63900d20a24ab. 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/BKHD52400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6581dce96427f9c239ffb199958fa08e53feddb7babaaca0a281607bbec9519b. 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/BKHD52400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6581dce96427f9c239ffb199958fa08e53feddb7babaaca0a281607bbec9519b. 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/BKHD52400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39318364063a9bef229f6c241c213bdee48c4ef7ee1f7a47fe0d163692efe62. 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/QZW9L2312677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf960bcf8d6f0a6dbb65256ee900b1ce16a6cca2e8bd0cd66ee00a912637c5e65. 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/QZNJV2388422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd112f3f785623fc4d10e38a53935917d9e2e391034f0cd36cfa214a37fc77c. 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/QZ5AB2304941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd00032cb013cd389ff9daf64e5007210d2dc6d38419adb529128642e2e2e46a. 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/QZNJY2203167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9014954c4ce490249cf2b5ca35ec02cfad2a66337176c9cda700cc0d7e70976b. 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/QZNJZ2156646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbb8fdf6455c6e43f7df64e3fafbc9a3d4de1b37001f8a9b7317855ce35540c. 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/QZNJZ2156647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd03e83524ac5bc73f47cd04c196f675756655ee2189b7a7ac47bef4c081665. 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/QZNJZ2156648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf391b7d8984cc24f4a70eca3e8aeeb78333f2a68a6a6347659fcc81ba74829. 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/QZNJZ2156649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652a5991bc951c253cc94a553b41e089facf33e0bfc8c5d6b3a68035498e3cf6. 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/QZNJZ2156650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c36a3209668a378ef7f75d8b8f4ab28b7cd3632f5ed645787eae1a93fc4232. 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/QZNJW2110353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697e31e4b06622e85d2e0777e743ca39c7b1e18cf82618bcbbe52494f0214181. 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/QZHZ52138637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaacec6a893880b9afa3d658f2dc5c5eba43db57af05169cd7accd62392405b1. 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/BC38U2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b041cf6fbba2e097f56408f2eb6ae5fc41d8e0329143c4aad541c8e7e42c3d. 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/QZZ8A2376955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372233873af0ef0cdf8667b266e17c59a0def2c16e06369885901a8f9335c294. 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/QZZ8A2376964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7520dec69bf5260ac4e96a70aec896d623253f973d91b7d6ba191e881281ded. 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/QZTRX2542148.