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 0xe8f81274accda35c63131d4a65171e9a68fb55c068ab6f6068e5be0d70fa9e57. 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/36268a37-5f5c-485b-a190-381c125b6d58.json and https://artists.proofprofile.net/proofs/artist/36268a37-5f5c-485b-a190-381c125b6d58.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 0x3cf425ebd05f178e6f7b2bcf2a0d42afce0d5e33cce0313d41ee74a370c7d1c0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2315764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b0e0469fca48a5b7cdcce4b645eaa41592b728977ff442d1286097930ecb03. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2315766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f0c453b442f9f58e24292afafb331eb043fa96f7acce8eceaa7102631fad68. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA2P2315768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707747ceff6dfdba0cb75a1cd010c6f8959e0565fb8943636ebba1ed21d5a4e1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2315767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94d6f20757a2248ad8518e5a782242676b3dc08a66db0cd02221b0ecf28d5b6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2315763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b8d7c04bd7d305cae94ee55e6759529b26ef2b7e7a813672514f603e5ec46e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P2315759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f94c41875645246f110f59a1e6b94cf8038b90327391faf415dec97c1de1b07. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2315762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa183d26a3c07586b282c9d47f5e09157ea69dd7e4b26d1def5e36c66f619ec65. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2315761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f3e84e5ab3a8ed9d31e1578635c67e426f26a11f8b584e9e5665ce015a2a15. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P2315760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa753fbb6b05da5ccd536cc0fc702f3820c30f9dcd7a48c90b45d79250f1f5579. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2315765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c9e8161330b80065c916a89dff16185ba174fe6a56676abec4254ac70543df. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BK4DA2424705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe337f04a476b96459a9ea2e6e58ddc77b8183bf4c7cdd9a874fbc510a10ae8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P2421395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb10aed49948fc7804a029d13bf9fc028538edd637141647d0fb49d836c7c097. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P2413342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd74d048f2c3009965ebed5b503891c3871ee763866e8bdf51058d46c4f0a5d0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2404913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e7f2cb9c9fae2aa6eb27f66863f2aa9aec84001bb6bb0eab383237b437ef54. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2356230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1ecc69074b88791a032603387ff27fe9ff418d6a6314e36339cb0cbed5ea4a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA2P2350123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1501e1bfd80451d4c06efa4985b5a4149b62aa3ed264179e2710622cb113965a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P2348198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e41fae345578507a3282287e9efd858c8f7efb421787d879123e4787ed8f92. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2341362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a039970b9999dda6b0a386626d5c73a9e713b2701f2586da517a8781f6e217. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2337640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a8c27f940385cf6ee4723098148f856918c232348f323897e030cfa2d70e8a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2311533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1bbe2212c932fa62b41e78bb0f8179eb61c8b2a2ce0a9c4f33ab74e50f595c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA2P2309043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa394658016ba57d940ef56b3ff8d7c1d2df6bc9180e1313ae04cd28a6cb1bf0b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2265414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fc2b1dc5163b7cb037ddeae56a588d67deb91c070380a0eaa835d300cdc894. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK4DA2504139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d1577ade3e6fe90e9946394d651aecff1b9c9470bc27a9c66c2ae1bc42054e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK4DA2460954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284fa66ff1c40b4bc7fa86ad89bc01baee3ab0730a992903b340a78110eb3d59. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BK4DA2441403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcc70e654920d4a8a1785734ae49473a9818891c9cf142aa0c8b75104fe58e0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BK4DA2441404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f60c7ae43757c9e2801bdb103cb55612a8a08019e0a393a5c559770d5fe707. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BK4DA2441405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabf58b48b8caf1e33891d08a72d8e27ec6f6ef51096a7f36c3923aec25e6195. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BK4DA2441406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b55b07b1c623a31fabb0558822f3a94db2ac0dc1de5d3224a5468eef4c8e43. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BK4DA2441407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3ed7bb389f999c3bc1292f075cdb9af1beebc308f9b6b88cd227f4421af2d2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BK4DA2441408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79da94b7e8a3e01ceef93c9406874368e05ed1ce9686b9f9adf036faedb8225. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BK4DA2441409.