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 0x4276ccbd4965a96f2f73b72ccd764e9c9b6d4cc17a12e9585738aef889cbb70d. 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/ce2cb77c-6f55-45ec-88c2-af04ab8e5afe.json and https://artists.proofprofile.net/proofs/artist/ce2cb77c-6f55-45ec-88c2-af04ab8e5afe.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 0x5ae7adbe7fbac3a84ca73fb6d4aff577445a49983626a3cb338bb2eee93b2441. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/GBSMU6547946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2a0ca38b2fe0266930ba92c630739e56e113bea26d9c82e62d2f0ccf9480ea. 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/GBSMU6547948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c744fd03a3d7125dfec6cb7b0bfe120a15987f087064909328040ece7a6af5. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/GBSMU6547949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f99fb16bda30e03721dd2f201cd5822da16125ca623d909261211a028d05a2. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/GBSMU6547950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa806c4d056dcf62dde71c2355d8100a7532f43c6a0b49d3e73dec509aa47d0. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GBSMU6547951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd07709bb8626f9230d0e3f0f7c6fe937133a3a93e26eec7dca2174227b9e8c. 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/GBSMU6547952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82dd58688b65e01debf0a25c656ff0df7a8092441d01196c70003fdf0dd91d90. 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/GBSMU6547953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959cc7bb53feaa7ad435623fc66a151090635455a2ff0295a7df303e502a36b7. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/GBSMU6547954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792359bcf18d57449da54f24d4cd56ac4bb31364ed5aa0085f88242bf22393c2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBSMU6547955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8626d5a6a2f09df1141c15546d07d00c4ee4180310581a065070fabaef143505. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:07:33Z), 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/GBSMU6547956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68957ba7fe6235a85a2ae26fb7318b1e9b35d68e20462d571dddedb96d2e01a8. 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/GBSMU6547957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c2cfad401dc4437be5ecfc273c1d9746b003ea12b4fa47204aba2f2e1483e8. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:34:12Z), 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/GBSMU6547959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426b78991c5fd1a4f1084d368dcc3aa4498040b04eddd2e0288767ee46009c2c. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/GBSMU6547985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bec24180e728218f543ea9f8ee57f2d60529dbc302a24a59915a77bd3dcb556. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:27:37Z), 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/GBSMU6547986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0091f362d09e8fd2fbef43b598e484acf6a476437901dfb11b7e29b00c6b43c0. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GBSMU6547987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925682bcc96c78ca2a55dede3cb1881ae30816161487d62259844e33a9b6f86e. 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/GBSMU6547988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbad5ac4090bf51993fac51003cefd12ded34c67cb9c3bb5ea0370fa1a241c87. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/GBSMU6547989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fe2e9f6bd781e3eab3fd2a01b16456160df0b6062413552c1a0bb931a08703. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GBSMU6547990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b67db6822c7a52720efeec05e419266a60fa743817ad50c6b869beff974c6fa. 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/GBSMU6547992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a86e9e6c25fd778dbaef44021bf6f3f3ae47afd42fba53e0ac288c75cfca47e. 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/GBSMU6547993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1318daed92622feb40f46844392374b5a9d70dc8bc5b520c9eb4791641ddb97. 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/GBSMU6547994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead36691fdbb7413193411c67da6d2fa46f290c56b9e04c8c301dd96c58a9bf5. 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/GBSMU6547995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001d8aeacfb4634e32e21cbd48a20c75664a2660ef8bce8f049b93b65efb411e. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:53:17Z), 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/GBSMU6547996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccf95b9838a0987c6483841ab094df7146a6461030e518998d818547fe36027. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/GBSMU6547997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791c7bbfa63e035fd0784403ea29bd2d4e2cd267bc36a938dd01df8331579611. 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/GBSMU6547998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab84a528c22323a50a4206d8a86cbeb0602793f8b6952b97beb6c829cf27dcd0. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/GBSMU6547999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3552696eaa484abe3c702d870579575074ee0d83127556489596c6b0e8725d3e. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:56:03Z), 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/GBSMU6887989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8dd2fe233e37f4987a6a5ef21c014bf07fb5d2fa3effe1dfd3f92fd494b38a. 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/GBSMU6888027.