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 0x8382862a90785d9e7dfec2aa77f21f263b3e7deaa5849d5898f417893733740b. 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/0c4f9e76-89b4-4077-abc5-8fd0d8560041.json and https://artists.proofprofile.net/proofs/artist/0c4f9e76-89b4-4077-abc5-8fd0d8560041.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 0x41d88f5ae08987da17442107fdaf5b3972d6a5f4bafa6f80f08da9b9f989cc06. 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/GB8KE2316528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af8ae2014f446283fbde274a443d680c9a0832e7a9076aac17f7b786e181456. 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/GB8KE2316529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058a74d594e8184b030992dc762099b5ed64ebb82dba2237b54645c5d4f36f3b. 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/NLCK42215044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56970dcd3bc0fb6f5346124400c80f9624bd85c5b50af8db6362815c72768a7e. 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/NLCK42215046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a923b6f0656aa8d8c29437b99a8a3d28b09c4edc4853c380f36604e867ebb16. 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/NLCK42215048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8593e082d207908fe84922586da571698a0e4e56629a0caff66d8c6e945c0cb. 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/NLCK42215052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcb95c5eaca1135867e5254af87a11cbbc4005e720f0ac81e4099674e395f6d. 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/NLCK41054703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f1e18296329ffdac4f4e07a54ce3a86fa818c65c6cb66fe1145fd02a653422. 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/NLCK41053063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04860289a62a7e50ff82e5c129cebfa96a08fa850e27e556bc63c7a2b7ea1eef. 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/NLCK41402117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7d64d2576644f2376b4036ec468ca3f140009e669832f9100fb85fc27e186a. 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/NLCK41402119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad8769648ce966ab9ede2c5257cb940674ad16405533dcde8c1d6b75ec20255. 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/NLCK41402129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc761e0680d709e24da2592c22b8332b4d6197f26d8ea1d64b788b927b91eb2d. 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/NLCK41402130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104ae8840b84c1a9a886190d60a8eeb28d52f4ff10529da169c577e504487473. 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/NLCK41402131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb17757d6a10bd0daa5ea3e213d1f06e3ce76f6fd604b91a37b261b19cdb2ac0. 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/NLCK41402133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea65a41a1ec08e57f690d29b013d1636684bff3d6f49e58141c16f9810340200. 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/NLCK41402134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013ecfb83e705ee79041e4a3dfa82e6b4f30444b042c80e7e15757f637993878. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLCK41402135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f1f6d75fcbac60cc11d06bea8fcd7489114a0f5fa4acc047b240cd9e723218. 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/NLCK41402136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf308dc766cc30bb4cd985dfe283718ba56f4c024ec582677a5adb8ca8e62af54. 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/NLCK41402137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8811a3114f3fbf5697fc5d1a67fa6fde315f19174319a75cc8bb4515da0c86e9. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:33:26Z), 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/NLCK41402123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57a20ab9c196a811e20c17194be1efbef522e4e83a8b7397dfcaf590c321bd4. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:59:09Z), 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/NLCK41402132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4af6c9efe1aadba100b9ff8aefcbba887d8b64a54294745e6ffcec7008dc26e. 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/NLCK42402740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5f593024fee035eb0b3282fbd43c79b827df088744e9942cf3a60520076da5. 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/NLCK42406501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4af6c9efe1aadba100b9ff8aefcbba887d8b64a54294745e6ffcec7008dc26e. 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/NLCK42402740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2559ff56a046cb7923937a302c49ce5649d886515e8f16c618fd2f675dcd6ac. 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/NLCK42229925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb048681286e2b47e54b39d6e53360e52510a50f4104e260f4ec1a4f7c7035c01. 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/NLCK42229926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9887c94f1efaaf304da32d15a3fbd53fde645d261f6c6ccec165d0abb7cef4. 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/NLCK42229927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8140faf4c6f3ed6137f3c6a51a2a0e90bba9f8e490a41988a5e75830dd64caea. 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/GB8KE2207624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f72d101138b10debb363fee85455b0fc829167c61305f91694c6470ecf37125. 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/GBWUL2134410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52328a582c5f882b2b4c17c0eb87c81b916f2f2306ad0abf0fa7f3d3b11b3ba1. 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/NLCK41092743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e2f050353e28c6464032804e14b8a8d8d3549c46cb82c641dad612faead6b5. 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/GB8KE2150313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb304ef716b2bcbc404dd3950b0e3bd983d2acd65f6a1ceeb40b9e474d8349d11. 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/GB8KE2150314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968349a5ad8c97d2c164c3dfecadac66e55d972d89898dd5bb823bb3195c2cff. 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/NLCK41083949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2e7fed46e6849201093ed5199a4cd3940ed59b28aaa84509e9889f2393636f. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/NLCK41083950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd625af5c4a56590bc3db2a40336499ee47c05bc26e0a56833eba1e31143d2b61. 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/NLCK41062763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586a51c991156a318396f0bd0587961ae52d92c75c01b7af57c959e7104c9d24. 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/USLZJ1950252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f1e18296329ffdac4f4e07a54ce3a86fa818c65c6cb66fe1145fd02a653422. 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/NLCK41053063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588e4e8dea87d1cb0da472e045f8d9d49472e7c7999b0d6c6272d82c5a3a2294. 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/NLCK41046092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79b4372778e9f1264a62ca32ead2e5db15a442c7dd28827dbfc6cf752c32bd5. 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/USL4Q1741027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b1ce4254e6a38be66d30e794da12d435c2dde1dde825331daddd7225ac3179. 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/NLCK41034112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8d86f78eb54a13131056662f8bb649f00a674e6d6da5f251237692433e167c. 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/NLCK41017352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe119d4ed89fba0c2920cfc2d439fcd3bcf571d74705cb10705556193f9613c1d. 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/NLCK41017361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e0c8fc7f35551efd9628d2328181cf6711c2ebbdff804445647b9c2decbdfd. 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/QZTAW2465229.