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 0x69c676d478fca6aa29b80e840aa096f15610617b37425bda11712f4505948f60. 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/61952e3e-e2dd-4ecf-bc0c-6a278bb305a1.json and https://artists.proofprofile.net/proofs/artist/61952e3e-e2dd-4ecf-bc0c-6a278bb305a1.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 0x2a9862069ba92be915c7c353d716238a393e95552267e6179543d34822fd9d71. 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/FIWMA2200084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf0d81220b53324126f25138e4f03d8b98668542d7e88b6185ebe05fe6fd9d4. 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/FIWMA1800220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c0947367ecf21635160113526dc14558ba8827f913a924b5acd6b7ad8d022b. 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/FIWMA2000185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3373341be6e57097bec2fc49538d4a63bd568a79af0cae4c2aee4f51e5f60b8c. 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/FIMRR1200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2c64efeb85598e7040fcd04e7784bf34bd255b7598f7741edebb412d16b722. 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/FIWMA1700278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d4cfe22e8417a63ff086bf91a812531e5475a3afa0ea54b35ce348aa9e1d8a. 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/FIWMA1900215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44101d16c4c3ac5c2c687dcec6d9bee427ae280f022ce1239f92ac5686c0a6cc. 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/FIWMA1900272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45dd404f2376e62d15f84efa0046643ed4fa8587dbc2e5645a02b7dcfe02659a. 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/FIWMA1800256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a868e405311618a58b16b997e26915a6f4fbc9f7548c30212a799464e6f02f3. 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/FIWMA2000127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169d127d9583af4ef92b68067fd83555e344badd5d4a5283919ac481b86c2f6e. 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/FIWMA2200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f93973387915550c0e04ad71fd22230d4950cd3f0ba0abee88f6c1172815c1f. 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/FIBAR2500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d7c9e435ccc00e2615ac84acafbc19687eef84cd987132e0ec3500ca5db391. 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/FIBAR2500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24699d20cce91ab23d60ab8b279c94b221541fc954848bb4cff8d860e9f8b8ac. 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/FIBAR2400391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200917acea572c85bdb94a1cdf68d59cfbc825e07ec2e7ef72179a1049aec12e. 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/FIBAR2400218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3220274a5c6674dd16c1609f04cbba92845556d09a3d40260c4cc232a6fb11. 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/FIBAR2400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5e28f34530a95a3946bd5b5cc40e72b28bd0c614598570242d020e549cd756. 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/FIBAR2300456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327c510b5851ed408fc1bfaed6db3d472bbde3201247451009dc0f3e13d3d654. 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/FIBAR2300438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08081ec1728403548392489686344f29cae63a81044f8d50c8182bace337481. 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/FIBAR2300457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65acef37f57aadf7715d28751bf1ab271dae363a3a6f902e262e1d9cd8e5966f. 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/FIBAR2300458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9f7158b8c2fc8fd89cb58a7907cc153a427815a41c68e709a1de5b741e2297. 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/FIBAR2300459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327c510b5851ed408fc1bfaed6db3d472bbde3201247451009dc0f3e13d3d654. 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/FIBAR2300438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9b4acc7315e3d00f6a99b587dc5d349acf8ad4f9688863a8b5b6115686d53c. 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/FIBAR2300423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea2a0ccd3caf720e05f1cb334b15d97b61c920af11d1ff8a5cd06f244371567. 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/FIBAR2300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f6527754c7b432d99cdcb35afc132fb1ef1b5e3969c534596045f6c8cd55a0. 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/FIBAR2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa305572227ff36ca02c4b7b4bd97553c0fe38ccfde26adde55cf3cc61046392b. 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/FIWMA2200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9aa66cb77dd071549783e33cb062c7719e59fe5be7fcfa1057667cf77c7235b. 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/FIWMA2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37041026b439421ccdfb04c778368ab2762f359b84d8d452b75d224dbd093938. 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/FIWMA2100292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4827d5f92bad04ac52f34fe101cbd8c6243680506a8df8e572e334f702147a6. 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/QZDA62350464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7bb9110be0d000680b3eb563c012603c9df9f46c4194a8a6f360193dac392f. 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/QZDA62350465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60794572cd0b2da3752b024efd6a918d48463de7229752d704ef7b7fd8bcd0bf. 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/QZDA62350466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa002f3d93a0c6e4e1b564bd2030875a2a321e911656fe3ae5509a134b0e937a2. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZDA62350468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef8bfa8f2e9463b9d90f912aec405f4c137bbcbdeb1e01c242568dcff81a42c. 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/QZDA62350469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64606f1e29ad78ce8c626b8bb8846d6c5995444b564b19adbed239cc92e5a56d. 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/QZDA62350470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece83d79838ffe56af10b7575a6b8f1ccae24a09c410d6862c76c47ac22fd11f. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZDA62350471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689de9b936a4883c0e4e9abcb5da95968b303697412309f9f737acdb2a0c047f. 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/QZDA62350473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3a65066c61b6ece094f6aaca67229e1c42f5449907ca26e7fb8527af76ab19. 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/QZDA62350474.