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 0xd2e1aba6e6ad17b46246af23df85e7df300c60496903301a808f411bef2cd27c. 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/6fc232b4-b1e7-45a9-9127-f9f2ce43d216.json and https://artists.proofprofile.net/proofs/artist/6fc232b4-b1e7-45a9-9127-f9f2ce43d216.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 0x4beb3ce8184e70e25d85a6ea09c6fadb9d9cb3eb10bb044c7aaf23929f6335c0. 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/INA6W2201107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e30cceb46a35dabeef193a6f3ab233e92f43478cb1910f5db3b26420e910cd. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ING212403749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ae5e4a2293e2314d374c2403137ff20eba59fd13906661b7d5cff12a8ec61e. 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/INA6W2201037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993de6af291d312ac1d88ba2f5432dde3fefca487e8f10b5de5359270bfcfee8. 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/INA6W2200961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d49234f7145377b42e6fa052ba0b40eda3d217c3aabe7871185a9831be3c75. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ING212492675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50f72b25778e4e2b353daedf6b258eb73df615dec28c73b1e2d3248b6272aba. 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/INA6W2200854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1624d8a359735c0bace1792450bd7f292fe93c7ab7ba49635edde55d1bc5f4. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/INA6W2200837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa143e449a64d8ff08f847a8642fb233231e77e658d5c91f5a5bde971054f0c57. 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/INA6W2200803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bc41f359b29d1327ed3ca74962dc7fa6e09dbb37a030fe194017a2c6c75cf0. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/ING212482095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0ab4c53577a990f6ce76fb5019f64ef0512f0ac8bffe2a88a332cbaf9a20c4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/INA6W2200758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3387fc907864c3d4d6a2312cfb7717db2be9557e315bc0af5d9255f06b7bc5. 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/INA6W2200736.
Hamu Tata Ruta Khasu Re Kalaliyo Maju Lol
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11e6e0cbf328c9953da08d5b7c9caafa828cfc05c1bd3e12eaea3af01e36031. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/INA6W2200710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc16b660357aa9cf7a342bcccab233d5c699e45e43826e8cfbc06bd62d39c052. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/INA3W2300377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15dcc1a3a2baf1893d91f53ebd667ccdecc5d8e1e44c53885f36fa661e2431e1. Chain 2 (Bitcoin): anchored in block 957244 (2026-07-09T01:44:02Z), 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/INA6W2200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa97275f120b427d2eced7fc03ec254e1c3941a23677fee522ac431b053295c. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/INA3W2200347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b05ade47f39aa363c9ae74932b4bbf24692e00277580a528999f5a312428203. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/INA3W2200235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990658bcd3807e180d1674403fc562e04b0912af603c0673b1d5d1b6d673a2f5. 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/INA3W2200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466cbd8e80b86c195e47d0df4c58fe2133b84cc5bb76ce6a23ae609ab0b2d098. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/INA3W2200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174e2c0e51c39eda8f2fd4ad36399d2e5cccd7d8a053c5ed5a64a537ce32b446. 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/INA3W2200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9278e8cb1874abb4b823eefcf5fd3be57186a639362f72efb3469090de28a6. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/INA3W2200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56eb1a39551c800d4021843703225430a25f356427dc79c4e4fb071828ba9496. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/INA6W2201060.