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 0xbd393c9e1936b0b5d25d109a644e94cfdc73c237e9c074e71f91df225a6c6ae3. 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/35e3c734-5042-4138-9d22-c538a50f119a.json and https://artists.proofprofile.net/proofs/artist/35e3c734-5042-4138-9d22-c538a50f119a.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 0xd624f308c6bb62bc46d1d9c96a7e2e66f82724e0b938d3aa519956888eb6247f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR2X41989906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72dfc121ab3b83b3b61a968abd505cd2a210b26b7a10271da1aa6b7375a82999. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:51:36Z), 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/FR2X41989907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16687b0eed0221891d51309e41b8a80d89191bc04c184294a000ce26677d5b7. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/FR2X41989909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6abd2b776657629180d65fb94432b16f75028971b22627696602ce9312006e9. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/FR2X41989910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc9042d13b62036e520392ae1f999bed3ac8dfa0b7c166248495fa18bcc7f58. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR2X41989912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b1a5a8f08219227e1f028bef252c22e87bf3142fb93d61b0a02fb66fd53fe2. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/FR2X41989905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd624f308c6bb62bc46d1d9c96a7e2e66f82724e0b938d3aa519956888eb6247f. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/FR2X41989906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72dfc121ab3b83b3b61a968abd505cd2a210b26b7a10271da1aa6b7375a82999. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/FR2X41989907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16687b0eed0221891d51309e41b8a80d89191bc04c184294a000ce26677d5b7. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR2X41989909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc9042d13b62036e520392ae1f999bed3ac8dfa0b7c166248495fa18bcc7f58. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FR2X41989912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe017d79abd5565de16609d3c354530d5d4215a46e7004a2fb210cad38a97dce. 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/FR96X1932347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd65d9a7403623b4189445bd4caf47df81eb4f2fd2952d4dedfb1a7d3935c05. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRX452076423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32019d2b68a7923c73d1f1e4a4ad8229edc110886f9203a8ef8b15dbdda518ae. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR2X42083224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32019d2b68a7923c73d1f1e4a4ad8229edc110886f9203a8ef8b15dbdda518ae. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR2X42083224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd386e1fd9bcce73dbc8fd75d8ab521547f4f70bd68572f45c5d0bf8ff6eca82. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:24:23Z), 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/QMFMF2013598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d1c3970d4aeb0911dc7169fe8796fbd97367fb7c438ad397aaa05e12fc3348. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/USA2P2323310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe084fc33e11b47cbe45b9087fab4120a6b2c529f6daef05bd84dfb28564aaef2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USA2P2338822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d2fe89134ba5fb648fbeb2b537deaedc8387b4438b516a5645699539402e13. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USA2P2500927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73dd98fdb4be3bedd2f60af460e2f24cfed195c5649264d9d5a097825e24c18. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USA2P2500928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f4e17d63bd9d238b8e12bc2396ab76e7b47db2d6228a424a1e1fbaa46b6c0a. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USA2P2500930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82127496530b22f92fc2d0eff58f6f4c160865b911e364e599fca573dfca4a39. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USA2P2500931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69a9a9ab6bd70a5a391160c08da9ad077032487f775fdf367a6b7cc2856c7a9. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USA2P2501153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb05c09c3784cef31237d30635da4f5a9850dbbfb6a4d52fed2ce53d4b0dd7af. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USA2P2500933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04873a113665eff35d35d277e488b111fb0c1a66069440dfa275a0612c6eef12. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USA2P2500934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65d6200337f2c50d7f54fb371f1b8888100fa1aa2e965d6c245ba27176f4e25. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:43:42Z), 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/USA2P2500936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364debab2ee3db1bd02edd82b8d7e2274a9cd26f5f288b675cf4bb556485fcd1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USA2P2500937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1855dc6a6bd64cb9e66c5b20b5df7338d8495b2aeac4ef19dcbb55860356a9. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USA2P2400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e07908091eb0d170098f69fae7c03925fe0dbe288f8d2e53982ee28e47705a. 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/FR96X1928825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383080125b23726c163cbec21f6244215b88c87accfc4bb328f6e8cb20291de0. 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/FR96X1928828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d60ab1707c72a483529e1850e991604cba050080d3debbf3f07dd84671de94. 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/FRX202036932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dd2f46d2c582859d6f661ad6110a645df9237350328237e789c1133c5658c7. 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/QMFME2076648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86282d4ba8449c16115866f40f880501cbc1588b93379fa064e6974d5607e9d. 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/QMFMF2013482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544bf912a7c0dcf1a0251d1dd73b96e9ef581728cb3bc13dfaa0ced30195fcb5. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QMFMF2013683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2396d210c31170310e57cb9ccc0627340ac32bde8fbc41193663e61373fedbd. 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/QMFME2168066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dd2f46d2c582859d6f661ad6110a645df9237350328237e789c1133c5658c7. 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/QMFME2076648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86282d4ba8449c16115866f40f880501cbc1588b93379fa064e6974d5607e9d. 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/QMFMF2013482.