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 0x45d5d92b628cade0188f2e35f8c0a7610073633214772ee7d82733343d2d1d5d. 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/081b0308-d23f-44dd-a646-dca92c14578d.json and https://artists.proofprofile.net/proofs/artist/081b0308-d23f-44dd-a646-dca92c14578d.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 0x7c26a4ffee6d77a37f9c480166e966743382918734db465fb8c5038080dcc8e5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHNA1964963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fcf622528210e8339be7c11d53cdb446614df8149dce408828b1298bc32f0b. 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/QZHN92189353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72678d218d7ae94a3174285fb8c850d708bec00ed0d3872386a8595b930a0e30. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:14:35Z), 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/QZHN92193381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd0b7b1c73efcc2a72abb4a7b8dc82175a3dba8a0e55e1ca75b7248740ebfd2. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZHN92154346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283366f811aefd30612593286c78649850d9d6d829696cd58205b04c74341c5a. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:37:24Z), 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/QZHN92193407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac85a3bddf3afc4b22a6a93dbb95f751743ea9da5298b60bb8571904f7b336c. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:56:55Z), 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/QZES72204078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e49ea7109df70f776556ac0d0ba9fdfb678c3ca956586b1da3a71a74c45333e. 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/QZK6F2246508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47758fe1cfbe2069ca07b56201adf1dfb8f4b8dc5471e6a5e258ce4980c0e44b. 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/QZRP42235515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1d02ecf0a49c6295a3dc072c2026ec7a9b990571643970183d4fb23bff00e1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZFYZ2350400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7273a3cc17a0ee2b749a73d9598c2be7008a6cc8a64c8f899c819de48b5cb03f. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZPLS2369425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1822a84044ece6459c6735084edf23ae5624bbae704e7b02fc410192ae3537ad. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZFZ72416722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816055c77b52a45e23314c777721f86cd2d2ae1909a30d2e3f13e7f5cce02164. 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/QZES62468092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447ef33494231115bf9d803c51cee48bd06105dd22872244d5522974b70b40a0. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:33:43Z), 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/QZES62468093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33861f278d3334bc0f8ffa4ec5c14443e9e9042411b899e6c16b10b9a2f82678. 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/QZES62468094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea41915f8b3d4f16ffc8297b9deb571304e09ebf13cbf1f4a1aa2ad42602043d. 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/QZES62468096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725986118d34a15221287a2006b2ea1f6c81744c02388a98075599740f59a3da. 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/QZES62468097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f4a9f057fb4f004a3fe0d6a933b2cf3e30a529f4cb70d5042189eb66cde30a. 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/QZTAW2424567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ac518aa310e1794ca7042c9c2ad64f6f6f4c333c701e6cea360329e4b525b1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTB82449658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814c3dae73d900b8d482090302bb0a5ee9bde8998db9025df77996300e1afbea. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZZ7Q2454877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792b01245972e705b1701eecd9f760fee168e8b0b972152e69330c2dd5ffceef. 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/QZES82526455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58ef135c639a678b566d9d6e705235457ab4c17e530dd5c99879d3e885e17a8. 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/QZHN82565736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a00050b9813ad0ffb1101dfd918f14e15f98a424f1c55bad1cb8b2ea3635b12. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZHN82565737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd5f1d994da42e467326c4c2d25859448f5b68c062bd61dfbe5a58d7c98e491. 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/QZHN82565738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0572b7a5739a5d7fdc50068d30757ae6083810ee1cf3c2e50fe2021f9314d7. 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/QZHN82565739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a749f8170fdd8f8724e32148359d877772b81914f4c450e2226988e5f7da410. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZHN82565740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331fc6e68c766b638bc9f209a72a93a53b163f821f2ea74538fc8ad1c090770a. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZHN82565741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7273a3cc17a0ee2b749a73d9598c2be7008a6cc8a64c8f899c819de48b5cb03f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZPLS2369425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd7ba3b8597287ef84ad997d86081e20d2c39f3bd9f7912999312f7a11d2b1f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T03:02:01Z), 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/QZHN82565742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813fdc6b3f2a67b5fdfb8bab67a6d2b3519a1f91a48538cfce699a15997eebae. 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/QZHN82565744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c3dbc17aa7b8681c582adbc66131c154f874911cd9ec1f4abce51fe37fc9f1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:30:17Z), 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/QZHN82565745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9a65f7a35e4a06650118cc9cde55f9cc7b07a2ccba92e052322877de431afe. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:56:14Z), 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/QZHN82565746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dafd85597a9770917abb082df4f3310fb7bc2f011f013085c47fc92e60e2363. 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/QZHN82565748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76615ef3084ccd43fa63ae57432c4b973cec1638fcaa64463718a6f7255b3d27. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZHN82565749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abd50b011cced8f555f57cc92edbd8e4de364ca6ac2555c62b2997201a5bb55. 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/QZHN82565750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7b26af0b60f79fe0575c631ec209f1721f5ddcb60a0023a019f9b24778133d. 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/QZHN82565751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0a21af71135f95a3a1431ff099c0fe1e926023f505020f3c6e05e8f9b6c72a. 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/QZHN82565752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3fb0e9748a669fc0c07ec712cb591877af94f4deac0f485515cd8aaacd596f. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZHN82565753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7625e4c319eb220de53f09f737c24b87ed920e76a37548cf2518b3e3b7603060. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:09:31Z), 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/QZHN82565756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ff36c644ddb2df0502f4a666a19f68727c738985032681be54a7f75d87d76f. 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/QZHN82565757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc353a385d14624f4e648f5b9b48ec779cc6752002ff8b5bf805c5e0768ec1e1a. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:11:37Z), 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/QZTBC2572548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1d7f0ca9812126d449d9558dfa7578c26a8356db61012b44760f18e1b29155. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTBC2572549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff1c6eadf340e85067f80466bc8b76364e53ccf3c7e6906a84424b747d1ea5c. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:34:45Z), 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/QZTBC2569393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26206ee5c26e51814905b92ef503d3e7af6b81be0dd681e0bbdb0997a4554779. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZTBF2442315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2756a81df537f404f60c084128e9ee458a895850c83f9d8c103e96b23d5ce786. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZNWW2345802.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch