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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efc9412e3873bbe21d42e7c0d75f69109d40099a28d344e2718a3009a30135a. 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/11991f44-0deb-4836-9c51-94143601dd82.json and https://artists.proofprofile.net/proofs/artist/11991f44-0deb-4836-9c51-94143601dd82.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bff6faa319d045fd39132b9c4166d61c8d5f70d1d8235992d006cce2a04d78. 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/QZTB42582662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15341ac076f70e0241865d5b55eb2ea2ed9ecf5aa31d3326045708a46c07082. 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/QZTB42585345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4467d5cb40481c84bb66ad5773d58615aec4e84bb08df4a70584aa9cef7dc7. 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/QZTB42511950.
Tongues Of Fire (Give Me You Live session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8facb977291a512b35b433d90c7d47e023cffaa558bcca6ff5d4253a9ade6d0. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZTB32539745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef422f6e07b99c59d1198f53c9fa3faab5641f073c8fdefe525ce3d6bab3ed91. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZPLR2510886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2231b945f6ea3e5d9d7cbab66932a99a013e29a61fb7f59bd0d8b822cf6386c6. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZNWY2514618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817e084f0a135e66a2f9fb74cda4ea17a4fca642fd4e3b7fdc0eb98998fa1be3. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZNWX2519862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79591eeab41bc1d2002d251308eae41d361a7f852a9c96ecf410247efcc2e455. 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/QZNWX2518277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf6f15d56d70ba9a97d65b7d92f806d626cd2121faab272180fa340fd3e19df. 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/QZNWV2501449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55531a90848049df51f0ca043c3f309270dae7b93abc31233535b855665675d8. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/QZNWU2507842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f4d35e0339835a40ec3e15544cc7b153cc1d81cb67966af7f8d50181e0a4c7. 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/QZNWT2515425.
Viktor kliford Amazing Grace DannySong Mary Audu And Jennifer Igomu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9d14ae82973170c749d438b6b608c05f890b026519e9cd56d9fe37a7cdf7ba. 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/QZMEQ2549984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d009be38367a8d2a3dc8d4774a5e8ae88c47d9a2c13ebcf5e6f3d594c257dd5. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZMER2545215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88b1673efccffedb5def7df77709ec3b5cd93194768bee0e88dadb2c18c7452. 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/QZMEN2509379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14d33549aedf700bb85b88af0b750652e1675d2e835e82ac63ccff5b282fb4a. 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/QZK6H2560609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4442bdef4e32d42a5b7bcea3983e9246cb5a59051e0c03424a82a2f6bcd9b813. 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/QZK6H2558859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf853906d2a250c080811bb82ebd23fdcfaa8fe33fb79174b6280ec13e102f622. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZK6H2550383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe437646001e64afa2ac5b1f7e1e0ccbc67894889eb37682e287f2df5fce77a15. 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/QZK6Q2575070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2ff4617446a5d0ba33ba01bc8b99d29e887faa3cf288af8aac31cc3ab94b3c. 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/QZHNC2535693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b75870d77e850b5c27e2cd25c480fccfacb8c241d044be02c7a9621b3b79bc. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZHN72575532.
Tongues of fire (None Like You Live session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1836a0fad7fa235db8871505ed18996920bf0d08b2973db69f93ced9a4925882. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/QZHN72538425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90344c2cda67368218db21fe348d6bb221d7c18847e73d7a3341440a697a4142. 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/QZHN62568424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300fba4293daa4016711ce3d060a1e059843e4aba0282274add9ea3aa72a6654. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZHN62504887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d0709e56162c57518e3a5c93659e9fa88dccc945698d6f304d84e5f565a7df. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/QZHN32592451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d187d88aeb95bd8b977216edbc0e495039dfd6c06d7ed390355dc490efa616e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZHN32550314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c563f453ed5e578bc98a4e57f999731c2c94327e357e850be7f4afa8b502ca. 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/QZDA62572227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dde77e4e004ba0c006fbdc738a28d71a6fb3b0be08ae07c44010048dbce7ee. 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/QZDA42591501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23667686f07b953a85dc6ccc4e2f676397ee32d566d604c62e4e28de8a1b790b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZFZ72570910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55702490c91e19611b508b184f66e9b5161c2d7fbc5239788a3c3a5c107e801. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QZFZ72500423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5921849d63c5e3b2c743bd4d08c7687f92946089045852e4181a9326bc26cb. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZFZ42574525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c44a8af0a19fb424839131aa8bf4a2228e160185c2cf7f8091746c370bfd0f0. 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/QZFZ32530422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4e79d5972a8d2b2f6e5fc5052defd9e61b1683dc7824ca6a1a5143e988440e. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZFZ22503567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f6c06ecff55776ee55c0f1732104428386c78554625c451c6ab9024c7ad0ca. 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/QZFYZ2562423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f710c14157935cb69f56851db47d5b6f644984d1f9ef480be6e18bfce1389a. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/QZFYX2539153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463290d82d871208b81e399bd0014a102a1df34defb5f91d178500c64c2a0b0d. 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/QT3EZ2446861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe817eb0aea26a87f2b6f8808aceca8c40c3f96770521e361f8bccd415a32340d. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QT3EY2465941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862d126cef6c9c058b933fb92d6748bc9be8363eeeaa884f38496f2c518f1700. 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/QT3EX2498679.
Tongues of fire (Language of the Spirit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333b2ae3d686260b13d3d7199bdafb672fa8efc7910bf16927bccb4ac8ea32ee. 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/QZZ7X2471871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1208668b57b1a13c7226760d8976c6a4069da2db3d284a17113282d3ae89063. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZZ7V2422561.