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 0xd3d3a1ddd490d6e5430d59fd42537b9573ac1a7e118ae8029a12ee7964420ced. 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/70c06f09-3334-4f23-88be-134798a494ed.json and https://artists.proofprofile.net/proofs/artist/70c06f09-3334-4f23-88be-134798a494ed.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 0x7f1408f62f5deb8b9793a44e1f5f2a7e7ac13b2d2ffb45888553a9e7a6b913d0. 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/ITAXQ2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4650927a1f6387df9283bc5f78f41bc17b9e24667f7b91e2c0e7efead5122bc0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ITAXQ2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb771d4f73cc60edf9ec55d12d71d7cea4ab297ab0dcb29516ad91f57617fb014. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ITAXQ2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf26c1306290e9c211e837b70e0e5a013a6f147194d578d5530e30b70e62ac3. 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/ITAXQ2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c2dd6c9da49cc1e80ec2c113f3951f37112a5f8b63b2444cf6b7149e81c570. 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/ITAXQ2400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8348dc181d71f4ee2bf6a683ba6ca02b41ab1c0b7828279b4bffcc1ba455ec38. 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/ITAXQ2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255644a043301e16d3530900a7326ab73926676ec9ff93bf1d53eeb12126dd2b. 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/ITAXQ2300126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877bd54944c0c5741c2e1286616d4ffed16186d1b21592bda385a9b997915bd5. 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/ITAXQ2400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b2e0060b654aa3888375294d7c3b30b5abb63137961a5e9d01d70c44ed49d8. 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/ITAXQ2400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa8110e808676e62f2e84b6e8f91d68b7430980f6ecd13a608268789b0e6539. 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/IT1SS2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3e86319628cb9235e41ba78ef527f4202b2582a2a264f9e0a3f93d1eced044. 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/ITAXQ2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fccea718e33d80e33a3b26af18b24f5b386ebc6ebb6b7a7ab89e8e420bb455. 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/ITAXQ2400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d60b0a32c8b36b35e73237f025357c8e3c2565b5c469feaf1293722f0260002. 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/ITAXQ2400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c2dd6c9da49cc1e80ec2c113f3951f37112a5f8b63b2444cf6b7149e81c570. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ITAXQ2400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43f492c91c2a342a5d9750ae6a3087953796deaae81db68698e2c89c9a96f32. 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/QZES82325628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d1415b84f4b54448a1780979d3314d7526499a3b6e1b0c186176fc0794f014. 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/QZES82325629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34386feb21259fdd27797b5be2b76244f2f29e09129a52e4120b32a3e07d168a. 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/QZES82325631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c1ec61d9c1f8b6303c24e8ea07c898f561ae99f9b428349e953d2e3f117885. 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/QZES82325632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b1eca53383e89838f0f5d9dc47a4644642b2c973e84d17d9c4f1dea742e626. 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/QZTB62244462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fb7c7fc1049c789a2a42ecf6fbbbf7fcf027030e04f0b52a248dffb3f423e0. 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/ITAXQ2500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fd4377fc5e035d8c3dbc65e880ed490e6eaaf1088d1181d7a3a79cbb4d9039. 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/ITAXQ2500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26a1160648f927fe1a0e41fb8a8a9bd803535af5f564423f3c3d5ec8dad7751. 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/ITAXQ2500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3358405c2bfe9d5154bdfcd48d58655aac6deeda29226fb01e4c138c0feb34. 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/ITAXQ2500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083795cfaaac1a2098c87aa06536ecf645c0f8fc19c208f3fb3d3efa19faf654. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITAXQ2500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b34168805562d0927a70f26b7ca1d48a0b13a9aaad37891f1bb22b4d8be7ce. 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/ITAXQ2500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18bf66e9264f23bb0b799cd43469e2766eb5186b8e1cc4c4a19176362e664043. 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/ITAXQ2500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73857ac44cd92612bac052da1080a563d42d2c2a087224e1efda57763a176b3c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITAXQ2500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa550d11d8e70dec3f5608bd2775633a3cd268bee464223df8b5dacacc4602a89. 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/ITAXQ2500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5004bfd90ca8b846cdbe98e9b9b1dbef277c788826a2a66d18ce3ac6f5924382. 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/ITAXQ2500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f75b705193e0b209cdb07e58d3e539d62a48656ae185ff2bbd69209a2ea1144. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ITAXQ2500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09375f46b91aedbf296f8076877202bdad150cbdc9c528b4a2d6555ddd365fe5. 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/ITAXQ2500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7751dddb023906d70f7ac6244291f3be40a56347df596d53e6fc0f542bfbb78d. 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/ITAXQ2500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391bbffe39addadf45b314829b866d09046bbefb160160397de0b6dff4c0b111. 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/ITAXQ2500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8348dc181d71f4ee2bf6a683ba6ca02b41ab1c0b7828279b4bffcc1ba455ec38. 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/ITAXQ2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf668cd97e00638e8f1c2edbad242ff6128626d8d145b5df2983ef5b6c9cf304a. 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/ITAXQ2500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255644a043301e16d3530900a7326ab73926676ec9ff93bf1d53eeb12126dd2b. 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/ITAXQ2300126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e00ec44942ca8dba12e8270c99d8986e2379449d876ddf86803c26461fc6e1. 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/ITAXQ2500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf468b2d202ae35a02aa11c105c3136d50d9d6016b5e1d34ddda58325715a66de. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITAXQ2500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f126a0d0284aac3b1a9dfc36c65db8bdfc40dd1629042720da5ac7662bc47b2. 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/ITAXQ2500039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770ad552345ab57ac2993ed987ffcd3da6961729cfae4f0d15143a67789c9acb. 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/ITAXQ2500040.