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 0x60dc950e3a132367114620b917b314a9b726ce0fcd42dcaf6cd1674fb77220ef. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12a5ad4f-efbd-4a01-a2e2-897d68b6dfbf.json and https://artists.proofprofile.net/proofs/artist/12a5ad4f-efbd-4a01-a2e2-897d68b6dfbf.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 0xf2a5ca1ee76b60fb935f8673df5e44eec6ae74cf4e3b8316a50d90d524870346. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEAR42013974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f416e75749e2b8075c64368c79c2ef26d09a4cc9fbe77d2b5425249990aa9c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/UKR6V2012833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ad6c96cf8448fd43d8a743b679808e213b91072bb989892f848f50f603c873. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNJV2002454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a54c20955145632c7a9e4b77eedd99ca99f7f72dff7f52436659caa402fd01. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZNJV2019016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71c4a43dee6b0e84966ec6da15932b3a0afb782b90a234524925d3f4ae99a4a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/UKR6V2112363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e3b273f124488bb74c5f6d518e13ac42925ecef93f1316362a8417444a1b3b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:28:57Z), 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/UKR6V2114104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9377c83799fb4b8c9e9c284291a2dc1bf6c9133d8a1a64f7fdc92c3780ded913. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/UKR6V2115602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cbfb2d4802373be4dad54e51c8edc8e573246312ef12d9e933a2b4189cf6fe. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SE5ZV2205501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f2cc63c1a8546a616b4b21fd624cf665e1ce528580b69b39a856fad744f9f7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/UKR6V2211926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe355fed90b32fc10244708ebae74eddf1f66b8cc55057019cc4c78ce116887d9. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/UKR6V2212276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e96da10ba025c5a5271804d96f01f0ef95f43764bbea36b56fad1ee73f28fe. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/UKR6V2310445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e15b2499bb0cb99f30487455870ec837581ba00a46b084248c629448dded2ad. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE5ZV2311101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4642cb83f6274adf749cc6b45a4ea9b116256dfc2ec84b36aa012fd868cf0af1. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:34:36Z), 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/UKR6V2310683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b843c45a6112424fd2a732465eb8474d0e1c1391c8d92e1205a1a575544992e. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/SE5ZV2313201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58519235c79965785ece9f78f468a9ad8da6d1373e0074f38df5e88a55eb18a3. 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/UKR6V2310885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8069fb191c64aa59bb33d00f1350d95e69a7664bf9a8bed699140940d6e455. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/UKR6V2311232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5c97b96a7defa76b50a70aaee03b5537e286a1bd05ff49b9ba50de81b98db4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/SE5ZV2337901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cbdd90b08ab6790530af5ba657f58bf032ce3f7c93b13290b0a79ad8d928f7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/AUKDT2300633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0d98b520a9648ec9b445c30f40202f6c6e9fdc33a458c94f5dd2747db46664. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMFMF2378750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e2acc9c51accef336f6438cdb313d3a0e55042490c1e7200f975c758c80f17. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/AUKDT2400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a673342d90c412955cc6be44c338ea82a7cad8290d03da2365d91ba4c3e3e6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/US3DF2461940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3968722881481fa3c5cb69a1c9f723498577b5169aab80844fefceeb9a67b9cd. 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/AUKDT2501069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e2acc9c51accef336f6438cdb313d3a0e55042490c1e7200f975c758c80f17. 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/AUKDT2400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141ecc5258a38cc649168b3a3d964dd6e2fd465f5721724d3a774c4e26390c6a. 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/AUKDT2400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d68db02e52cbb2b51919bd772f143a862d9ee448e109a6ec850ae2e06094543. 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/AUKDT2400063.