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 0xda8dcfc4c823900b4ee39c9b35cfbed2504ee4c8df8135df737c2ed41d2b9629. 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/0932b113-059c-4f39-82b7-24f327968551.json and https://artists.proofprofile.net/proofs/artist/0932b113-059c-4f39-82b7-24f327968551.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 0x7a31a32f07d520b43742774ce92d5345558147ee6c4f4353ee5b771eaf4f34e7. 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/UKW3Z2302753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a23b11f3dee5e76cd590577b634b0a44fd2510f5e1297f8e047b34a93430ab9. 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/UKW3Z2302755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af2d3930c1a7e422bfb3026c24329829cb19d42addbc4ea17655a009cbb2467. 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/UKW3Z2302756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffac86553802b08816f5f160e9c4f95314dd314ee1dbf236060dd3e3289ca313. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/UKW3Z2302709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c249b5228538775a38388dc95191396670abfab6a46d7d11e2c087d217c36b. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/UKW3Z2302710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa168b1184e0f982d3ccdfb6a9af899b602b131f621903c8cbc0e280f84ce59e5. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:37:29Z), 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/UKW3Z2302711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d028c2af534a7fa453db2aff90efbcfb48a74df7a8388e21746bb8a657c36d7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/UKW3Z2302712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a38212956c43c15be0fa3d35a26e7971a9f36b5aba87c07ae7a33441c2f3c0f. 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/UKW3Z2302713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3c588ade0b743b8ba44c890bb9a5df41590be9110e48056a48e52dc653798f. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:59:47Z), 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/UKW3Z2302716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ad8541b652f66878e9097215e0bccfae5dedfe3e93886b6f5a2237bb4ac0f8. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/UKW3Z2302722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03caa72b3318960abf9e75647b33ecda5eed80860ed583adff8f1aff5981c72. 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/UKW3Z2200215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a20ef8d96c39ae4fec5f9d22e9d5b7f29893cbb73d600eacedf243066bf512. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/UKW3Z2200216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb73f147738b98c7dbfd0c14c0735c1e534b969b59bbeef23e297522cf7483a. 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/UKW3Z2200217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8449a40a6d7a4a375dcd292dc1958db893ca5740a0fa1163f0c5c9bcff64879e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/UKW3Z2200218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293ad6de84c1c8dd759f6ae1efc60f755e53a833afb63558833e13be0be7a5e1. 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/UKW3Z2200219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f37e906f93bdb04dfa53313e72b681f8812935e5057d83270798df79a463c00. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/UKW3Z2200221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cb5d713c6c693d525c46aae67de17ae0496c77a7c56a272f28f31a3971a0ac. 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/UKW3Z2200222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb592b57ca4c894dc4f52b74f23ba1643de757702ea9de7f55e96d52d30490a2c. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/UKW3Z2200223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb4936cbbddbf9b5752e0a079eb34ad866a4b94d991140d4716c8c5ff0f2338. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/UKW3Z2200225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf060bea06a2b16d7176fea5676fc80ce233fb59bbd7fbd8196db77943c4e6dd9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/UKW3Z2200229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b7db4109decf34c6c5ce7d338678a966129a20f8a1fe0bc7dc65ce5565d1a2. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:50:02Z), 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/UK5BC1700280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46952f1e44baa129a2b83e7c36fdd2f42c8c7ea3afd90fe2cabdbebd19380858. 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/UK5BC1700049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83618c7a5c4b89742ea8a35635cbf6b757c80b0c595aef7dc37ece9b6afb01d6. 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/UK5BC1700050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b01fe7fdfd6774ed1105cd67f69c56b5864a067c0fde08e104ab676bce3c3a. 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/UK5BC1700052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed1135c16cf775a86d74f49d091ac636f58a786e45a8ec0f12ddaf0795b0a96. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/UK5BC1700053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28dbf7054b1b9dbb85525e048745c2ffb647d0cc9cd5782bf740217277987ca7. 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/UK5BC1700056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84e8e875b59e5d4ae1daa9e88aebd49ed0462993f6e2fba419e7669932b4967. 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/UK5BC1700058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d69273d61d4184d5475a94d84a955015f71149a5680e0ace0a4775234f9697c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/UK5BC1700060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6297469fdcaa4a3541b8969b64fadd1cbf9891a546867e30cda0616d26ad96e. 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/UK5BC1700285.