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 0x1464b4839da9b3863b64c62eb62e5a5242b92dc595b0b3997ab2a20920127e0a. 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/c541c5b0-893b-4df1-9220-98862216dfdb.json and https://artists.proofprofile.net/proofs/artist/c541c5b0-893b-4df1-9220-98862216dfdb.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 0x1f289f3217c6b69c706cf94a4e75ea9d7e4564954e836f23fbbf98bab4fe7ca3. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/HUMAG9700122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ef6f5948f9453f875a7458e2e28ccce368f6e256e3838cfdda3134e9c1e1b5. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:36:39Z), 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/HUMAG9700124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb92693a951ced2d4c74a80c453652a412827571791d4ab748bb524f8f1ef69. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/HUMAG9700125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6606cfbcbee4cca52ff0feedeaaf68ee3e0761c3e63cb1760716e48420fb2c84. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/HUMAG9700126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5577a645da2ff1f1b7b6cd2992b3b13d85e9dcedee8dcb74d62b7125f3ab6bda. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:21:14Z), 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/HUMAG9900141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32533cec5263df0def22fcc45e54726d1a1799039a63ec3de9cf3002e22a476d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/HUMAG9900145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd574d3a49e772436429e4fee2c3add7ac349259d6eaf39bca94fb55494cf6452. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/HUMAG9900152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598a7d8472beddf052d9ee2ac45334e891b27edce30c6038f0fe3aed7ccfcaed. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:14:10Z), 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/HUMAG2001073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd554f9025712122783f8a85a315ad5054c577f6cf1a1fc2fb741e6427eea073f. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/HUMAG2001077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61943aa40ee667e60ec0849220ef746a82d9607e1ee335f8334e4c730ca02856. 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/HUMAG2003020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01d3607ba2388e85a24912a4b5824d23a87fe58de067b8e128e31d8bea41520. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/HUMAG2003021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6029815f9ce9e07dc8c914278f34e4ab6998a229129199ebc357b7a8fb8adb. 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/HUMAG2003023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd550f7f4761c5ad494c029671d6191246e691b933fd023a6d4034f3a22360f9. 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/HUMAG2003028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156f1ab0b717e11e324ea03572c60fa7de9a6d51c5b4f089dc3550e3fdefab57. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/HUMAG2004033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf2f2dbdbf53c0110aa86dcde681245818d070fe673a8cdd36bdf8d7e6b290b. 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/HUMAG2004034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7644a0a2392aa6b6af960fa00762ff167777f1c5c36fe89f44368f9bcfded9f5. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:12:27Z), 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/HUA630900203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13681b9a9455ace28124f348b1a9cc67b95eeea3a0f8b7b008df9ada517f5e52. 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/HUA031200268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3ee018b70213d9617b81347ab30a13dbd9417d6826a9cbefd518fff11c9036. 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/HUA551600037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43dd00a475d0470a7225122c7439ab1d50446d49bbaf77aa9048a2d9b41f613. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:26:52Z), 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/HUA551600042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ab9ad1ff9a75f1e3f06db873fb497476512005e38808ddfff1bcdeb8058487. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/HUA631900230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c46d18a6be6479c3794a62c9ad2ce87a292b9f514c11c03104dc3c80e47882. 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/HUA632100500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b9c0d5241ffa6d8b0247fb1f2657f7b1607f8ecf3982547e6b5b2cdd9d3efb. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/HUA632400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7ae40467f20673a32f8b06aa8a045889fd170a36ec7117a811e429dc89a7de. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/HUA632500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d566dadf79be83f26f79cdce821a98dc5c6694cf5f9bcdf55558ae3a889f73. 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/HUA632500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccc144b3de39464583e3cc9045c4ed17515b7ed5b87f7bf16370f3a01f9ab03. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:29:18Z), 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/HUA632500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe431502983be4105359bb8445d49674451547ae707161af10a6128f47243a43d. 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/HUA632500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58eb640e55eb11b783435dd88a619524defa4ea2c863813509547e6ac84f24e3. 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/HUA632500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782d20f2ad1e8d04dc497970f876fed6f4d0cef801826105f478fe03c81513bc. 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/HUA632500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc197d4bfbf9b0a0771551c507475d60b6d63f6269b7c7d129b24c274dcdea730. 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/HUA632500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b3b84a8cc5dde655c916718287ef5e9fcc4ea29b9261ea48303c6c277b636e. 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/HUA632500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c53a60ee85f34b393f6943974d7876b4e57e0a9a9c990ae2024c813d90e3262. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:11:48Z), 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/HUA632500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7ae40467f20673a32f8b06aa8a045889fd170a36ec7117a811e429dc89a7de. 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/HUA632500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b55264e1ae689373eedac16b1f9b374e6a44f100d76664f6b809a4cb9c3bb3. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/HUA632500014.