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 0xa0c885d432e842f7fe28c41e1a6d1d3b102576c7223497a2fbb5fbfb8e20c9a0. 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/43293a5b-cf43-40b9-a47c-089b25654fb4.json and https://artists.proofprofile.net/proofs/artist/43293a5b-cf43-40b9-a47c-089b25654fb4.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 0x57e30453a93a9e91fd34c402c775d08bf6b49326b8a4f71a01a3d093869da820. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR96X2103801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffab18e01ae5eae6469701d1f0b3d7466a1fa05ea990881290c13c6481cd0601. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:20:06Z), 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/FR96X2103803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb403b644d7dba3307c2012e207a384bd535dcd6ec4428270accc70394a3a7cce. 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/FR96X2103804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cda811eeee9bee6479d0efa95e71a70c6fc973de8b0da61d1c2ca039327afa. 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/FR96X2103805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a13bfd74771560cae6ea1145cf6a5a22c23cf6a876c234aef4aa2d51c64234a. 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/FR96X2103806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c2aec0bf7fd92944e9cdfdef9fd2c3d513bea59ff3bf4900df40233e438979. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FR96X2103807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8b37935de754cf9b418240f26d422676d3a59fc2bf6a64d4f3aa7a4a1786c9. 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/FR96X2103808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504627fba1060f6c1731d0c5001830ff5733982792b51b0bfee81a08d96dd026. 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/DEZC62257628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886453cc6fd1eaf4614d941cc9e0315d10f68c6062f36a0e9faa103fe7a69417. 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/DEZC62261140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe997897e68303dac9437529829ce54c310094c2c09858becd640e741c3cc4191. 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/DEZC62261141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78cbf303967190df8795a9e47f5a85d087001fcb68d321ed8181241aa170858. 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/DEZC62261142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532a85387ccc7140e2751ab77ad8ea0c1c68ff6dd29df1097540d61fc1f5a031. 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/DEZC62261143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504627fba1060f6c1731d0c5001830ff5733982792b51b0bfee81a08d96dd026. 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/DEZC62257628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aca68d26b1ac5458fe1ee7a60aa545ce775bf12472670d6d3eee9ed2a91c7c0. 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/DEZC62261144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc2ce6aa30eabb0b00750855c51dc29620d49ca26b6fda1fe8fef16ed759c73. 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/DEZC62261145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc64abc09c4554e0c5d57ab930a3e1ea7ff7a5db3e8ed67919a09c58dc7418fc. 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/DEZC62280702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a4689bbc265b304f4d8ad30571d30626a92ed2079774d458f25d02c656eb6b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEZC62289589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d34e4587c6f55fdb6454618208478b917b7e1f2630641741228c68b025d2bd. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEZC62294649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb5d953fc5dccddfe483bcda1514653da4083979c189a0053899edbda44c5b8. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/DEZC62210638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef1e7487d9fcc931f217a2d56534382e0b746b4f0d1cc742cb52dd63b97084b. 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/FR59R2360005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54c25253de30ba3f67b920deb8f07ae9a710a76ad9c2bf8a5eddce6383c2efe. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:51:38Z), 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/FRX202330306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ae5d965cc1a273663dbfb5f2c5eef302484b8ce3592057d01fc89d361940fd. 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/FRX452361542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29064f9a939c0b370d5db58597d02fed03f5b82f0bb03c5b26678c28e33995a0. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRX872306200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443096102b9ef162264da57d6f46c7dc072211eb6389c58d26f1a3f06bbdb589. 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/DGA052326042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb21c0f9eb2d4148fc0d70952aeb3fec9ba21486d8f27a7e3307335e160a95fc. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/DGA0Q2325052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d514d65c82bee2e6ea136b9cc926259e2c8031fa32efb4f02d7674e6cf666db. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRX282425760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ba0144ee583b1f26a48193d87c21347b61d776b79f7fe79095235c2e38c4e0. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:55:58Z), 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/CH7812529997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080f6a08a0c0a50dfd9432b3218dc7a858dd31ca7a717ce1d5f52dd576b8f26b. 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/CH7812539788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59b9d53d41f2870a79baf4309536909e93eda29235bb8cf68dd2e83e7dbdd4c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/CH7812539789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6af7dd1c6b586b96b760875db1c4662b5d56134f395612c11ee654f8c277aa8. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/CH7812539790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbdc8f40223571c112df87513e48325f14a932d1264a0bd6482703dd566bc7e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CH7812539791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb67cd2536f7cd825d47eb213ca3d0d794a7db42516bb4d8cbac70e0db75883. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/DETV91501839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4b00c3535bdb38a4455f870fdd06b6d275e2028bc830fed836072df69dc4f3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CH7812539792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd96b10081a6022b9e798180f51540a2eb77adc0f07bc030149c34a21768ba0. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/CH7812539793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdf9a5ac9abe020f9c5f22ce05feb6dbf5bb6cb95ad51922fe25abc9e4e7c84. 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/CH7812363104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdf9a5ac9abe020f9c5f22ce05feb6dbf5bb6cb95ad51922fe25abc9e4e7c84. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/CH7812363104.