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 0x04cf9ec2f0a0fc0e9178a12a7ef6219da8a39019605ead92c5241f3d47bb28bf. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c2baca81-01aa-4a23-b4fc-aa5ec5eb16b5.json and https://artists.proofprofile.net/proofs/artist/c2baca81-01aa-4a23-b4fc-aa5ec5eb16b5.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 0xb76eebb9749657eafa5f0bfb2f9bb64f06b8d47a1b9cc905671e13a158cbb268. 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/QZMEN2033115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a58e9c942fd196a61679f6ba103e49d897d8cc1833f4ce451f5fd495642929. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:07:02Z), 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/QZMEN2033116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c703ceb951a96ca7fc7c938fdef8b3a01331c7139e9b7b1292b9a747658e2e. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/QZMEN2033118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa143888a391c47043150837802dca4085024fc5cf15f2efabcc0df3aa2c193. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZMEN2033121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8ffbbfa9d8eeda09397faa053cb9eceb2d3039dd33dbeeaa062028551a383a. 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/QZMEN2033122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531bccd8b9df7cb0818a01bc56d1fb78ce319994d81f9c9d715d27c617491e86. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZMEN2033123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eed24b33568a02f00dec412d1ae0f08cb609c921d1d75f90b4e90cb87bdd6e7. 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/QZNWR2194001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7a12de6f7c1f634f89fceb9edb8c2a06a5668b2cac981e8eb4fc5575c9f6ab. 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/QZNWR2194005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaae15f7ac83a0b71623d9bd4dde8c504eca7315e5c61b0d719f181ccec5301b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZHN42266109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d591efd2fbd1ce64b294407b907c722f872e1d6337a223c8575e38a10e4681. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:34:58Z), 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/QZHN42266110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03fb8509bb52652c8465cba03fdea128c29fbbfa78bf28b766295475e1b203d. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZHN42266111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5d38c03fb9e18a8ec8382a586ae0b63cb4033a9c2e889fa2e9ea9a1ea94a1a. 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/QZHN42266114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e1b65560a25fe473817c4f60671ace8ee6d3c6f7242e3cbfa24fd456e98f3c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:52:37Z), 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/QZHN42266115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd647bf15950d792756f02bb0377aab063a6e4385f7801fceb5114a91954299d0. 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/QZHN52268257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed68a623264f22b667e1a9fd307696c333d9a3be843e6a25dbb33f47d2e91666. 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/QZHN52268259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c838d8367e002344b2727541f38adf4aad1cffe02bb8dcf9396e0973d59cb31. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZK6J2283815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d428fba146f18e72ae8eb4cce73973dcadcce02bfbdd0e7caa64f444b0712d. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZNWY2273524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2d748af004fafc5b6541dfe1936339ebc610c396c891a7d80d787a693b80b1. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZRP52226790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2122feb064405d4007dc8e14881a29c87087dedeba8eb2e186d2d7e1d8e1acf6. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:24:34Z), 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/QZTB82218477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a1f27a533ddbc6bc961e78f72c6e077daf7581e5e70e29eede53e39ced3314. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNWQ2449214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a8d54a7df01c3c54ee93523882ff8fa08381b05034f322de79ceb0cc3edaf2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZES72510065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f63cf74a29ee9b1b073382bf938f636ee94161b1adfffdc6d860b05442b898e. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZTAU2542579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969da41340e2f7eae8559e447a8a2713bfbf4f5fe169e134f6dcff4501d1ae57. 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/QZTAU2542580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6041a55e07366759a9732b0b3b9315f7d11e5ed2cc388cf6d5121f0be0363fc9. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTBD2575536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebb4940c7ff65d58a8818b9b436623f4b40647b902c3a53f0e3e00cd6b32eb7. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZZ7M2561420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34639e32dcb5d4dd1622cc272c67077b605bb25bceefd9f58ab3a0ca3ed4efbb. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ7X2589930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717e23aaa5c29fe72d9be8cd6dbce5c55a716dcee5d6bca1bd1913528459f0a1. 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/QT3FA2562672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d006d060750413822c615724e6ce22e42b0369b4fc5f96dad089e603171420. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:25:35Z), 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/QT3FA2562673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cee544ba49a268147a1ef5bc1dbcbd6e4e645b98a49e5e0bcd62b98fc8bb08e. 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/QT3FA2562674.