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 0x00fc4fdbb257857954d88043f832d28b10302bea253a43103181b80c51a584b7. 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/2f054acf-69fe-4124-9daf-cbce8b90f4e1.json and https://artists.proofprofile.net/proofs/artist/2f054acf-69fe-4124-9daf-cbce8b90f4e1.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 0x9580f5d169f18e5b9da9d58f5cdbc00a604576bcb5687bd24a9aa00670decbfe. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZGLM2373417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885749331529337b80b080b101d0ede400d8811731bb027505f957a5c8937797. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZGLM2373423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d12c3caf3884983eab3f8707ec590dd173e9108043c13c82cace6d0d97440c. 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/QZGLM2373419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf374bf87f6ead491a32db94cc2932c04352feac64240e41b2ae42444342a74b1. 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/QZGLM2373418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0a75ae8e7cc730ff849fa4b12040c32096a753bf8b050ae07d233e8617d27b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTPX2398088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5f22981d7f32e3226426510d56ab6bc26aab350694c421053e83fbe5ec4d11. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTPX2398092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157d67b7e0a2cb1cc9576e1cd544967be18b9e654e6e1fd130d7babbe35a8eaa. 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/QZTPX2398096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7442b0265393cfc632164bcab5126524f8b502c3c23f68b92ffae4a1a68fd5. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTPX2398098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759bb69a8d6f7e8ab44a8ce7a5e22871af7924a24bffc725f744f409f26dad85. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:57:06Z), 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/QZTPX2398094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6232e3eafc1be56131e9182fc93762753198eeb1abd0ea5ce9dd7ed8937c6934. 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/QZTPX2398095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedf5a9f4a80673ce7eba3b8dc1e133ccef728d7752040bc23b4617007ebb73c. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/QZTPX2398099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a23fbe430ad1a4648dc3c3e63bcd6d53f3a35e75c5e1ccc7154c307e1d06b8. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZW9M2315583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf92cad839bb4de390719a039fe415774c57fd9aa1ffbe7ca6c45185c4f5a705. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNJV2473825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3139e4e104fd34f93f8db9c96c735da08f213c8c10cea1c5036f0cbd86ae462. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZTVM2484056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e3fbd3b35031c7d09fdfff4f9f5f472cdb913d6b26c07f44d475c61946a5bd. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:34:19Z), 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/QZTVM2484057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad2b6a42333ae24956731665cce24e491084e3cedcad7993a6cf61e9a920b70. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZTVM2484059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b15418ff8eb480eac347d95967e743dc32f26a5b5b483461ecd5d53a5690a1. 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/QZTVM2484060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba624111ca0ac7996a2f8b4c95950439a5ebc95ababcfabfbcda1dd30ddb0c3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZTVM2484061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e81f5e3853660805a0d0e1318c1b95fece09a205574cb931c0de1487af7861b. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:36:31Z), 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/QZW9L2466631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f17fd6c72b1c17e4124692692bbdb65444bc7feac97be4a62514f5cce87d45d. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZW9L2466633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df9294974658aa26b6af6e4e9f4ecc4a5087f43a58026c2c9b3b5f6fbb535b6. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZW9L2466635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6ef6256e75b31edb31e891d56db31f16448c2e9b21e42fd8e8c559c5f8c15c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:33:08Z), 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/QZGLM2556945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38228888f682204c93b4c32a002af2ec6eaa25aedf79efb5dc26c450b3f19cb. 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/QZGLM2556944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45819b1b635342e62eed9fc6eaa04a03c5132e0469232460559875e82ffac7df. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZGLM2556946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32eaaad46d95546c650f1f1c1daa6d99ba97ef4aa728b12ba28afd7b27d1774. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZGLM2556947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef9f5c51310ad75cdc5cbe5bc5a08e38fb34b07b0a247449b27b62d58a00675. 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/QZGLM2556948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c249e0fdcea36909aa556818e1bbd7a31fa8016d65c50c7da8c8756c31d684. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:44:50Z), 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/QZGLM2556949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1acd4ca24bb359e31ebcbf443d474ad6f1bf93455c8966305779aa9405e9c48. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZGLM2556950.