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 0xe0c230eb2671562b4f81cd20b0b4a8b7ee24cc112bc3a209f99a019de4102cc0. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41070049-0bec-4465-9b00-005abb7961bf.json and https://artists.proofprofile.net/proofs/artist/41070049-0bec-4465-9b00-005abb7961bf.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 0xa0353d60843c36329918e7e28e1f125a284c1ceff7fff9fc53c15d1eac1cb65b. 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/INUM70502738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba05819451000b993dd628b6307312d854480ea99b6149cf9949d074b77cf607. 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/INUM70502739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb31588b7dafa615ceb12fea1dc65c48970cf58e410fc2fb0fa2aedee958ccf. 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/INUM70502740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05512255f2e7f7c719b0c800f352723eb7e9c455e41032b258af4b564a990bc5. 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/INUM70502741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ab6a3098d4f6255d8a3f5009c4cce609339fbc6e8358d8ffc3077ceb2135e5. 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/INUM70502742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0453f110191b869f45d75bba30adbd3b4f898dea4c1cde3a633c4beb006b89b4. 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/INUM70502743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd01981babb1663323acc65757a9021d0d723738e42007195cad00f512f55df6. 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/INUM70502744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67093239ab8b90c085bf8b80091c1a289f38ffa52297d43d183546f63d4fd32. 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/INUM70502745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e9842ff8e42a62cb30c2acb50886c16eb9f0b1617953ace2b0051262b512db. 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/INUM70502746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b76d05bd6918953b6c1cfa674e42f2dad62087a57e9525cad480fa6a0f5011f. 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/INUM70502747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b51ce3d125ecda5debda0eb51bb7e34cee028ec6e39fe15881b3ac02b56355. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/INP100300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee0f85b2c5611cd77e91db32f696bdd35622848bde1390cac22997b6131c346. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/INUM70501942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0353d60843c36329918e7e28e1f125a284c1ceff7fff9fc53c15d1eac1cb65b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/INUM70502738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903b8adf642e868146ca493763b9ac624c03718de9093361115b7e771d512fe0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/INUM70502805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc00d3d08abfb11dafe3db76440ec57cfd8da4f436b1053a055c4e2e9bbd31ee. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/INUM70502556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6605118eefd07c45a9ce9a2057e87a4c5f5b524f21f92f7d07735d9b314394. 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/INUM71100614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229458d25eabcf7d9f43b6791b3d2670420fe0afd119abab473e40c8217893b7. 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/INUM70602231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3393e9e2d0113d595f19784e4bee98a7c0a5af0a60d0d5e3010a0aaccc2fcd66. 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/INUM70500721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891c68c957f9e1fa974b48e15af8e2b34330a6dea4bc9b1773de7cd626e984f8. 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/INUM70602497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1eb69254b686b6d18ea21ebc644830394a4f72725ea80c6de4a943ffbd06a97. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/INUM70700338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17251e0f354678916f84680eae1dc0b72f39d8ed98323c3fd3d1197e390578ce. 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/INUM70701218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1470f57d3d052e56398e53f330565855cfb1311c2a124983122bc0ff6a994f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/INUM70800149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c451dbc810c6df45f0857678a8ff593b88bbb3ec53b2764b901602fa50b4d5. 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/INUM70600275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ec8ea55023c804d566a3f31382b17f8001953e4f4d001e9fc64931db0ab69e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/INUM70700343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe697868f02d4ddafc5874ea4bdf3ffb1c4a9e0a7bae713b0aac769724f84275b. 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/INUM70502654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7da47b9702fe7404eeb4b2388d44512037b34d3f579dc98e461311d36fd3a15. 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/INUM70502665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71145f8c7fddaec69ce52ee0c5197aa0987d9cfa098bd84fc99eb257d21f346. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/INUM70502666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2701b584a6bb5f3f48e53e8cb70f443e02d9766ceb3cad15f203b34d76b8c40. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/INUM70502667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dc2d0742b3d4153406dd05d1e1a72d9fd27b911ad6fddd2679ce2594425765. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/INUM70502725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cac4b530cf46f8d147b4dc5f1668155b3fd8b6f95d7f39249ba30ec95e0717e. 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/INUM70502726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e30bcac2b58d9681633d6a73141eef47a0b93ba64df456fc374aea799a0cf6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/INUM70502727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2595f97b4730a30fd5feb7fac38494601dafe36147852721bf454cf9cb2943b2. 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/INUM70502520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d1c99f956bce5f409c32df2610ce5213251741fb69bd760142e2e3ad62ebe1. 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/INUM70502521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb294e0b9748f90847db880b2befef03b02b292f45243dc63ec0d3675d7e68004. 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/INUM70502522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d63f2f3e331598b674fdd3bc05e09f249f13fff9e673e0e1a2743fc2fbe0b47. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/INUM70502536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5669e14557ecb471dd7ec9965ab83042a770a1dfed6853ee6a4309c1aa7f0a. 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/INUM70500444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd820d8a13b3bfc1119ed27004142b1f5910747f4319316484663c6af76621c55. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/INUM71200542.