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 0x8d8d410269f95dba5d8c1a770386ccf81e721880c14faeeff5c86eb83a4a8565. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfa2103b-783c-4b00-9f36-488008f75fd1.json and https://artists.proofprofile.net/proofs/artist/bfa2103b-783c-4b00-9f36-488008f75fd1.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 0xbacd7c8f64f58736d06e5cd0597eafa216bd0d18231aa1ca54165ab0f794344d. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZS7J2135408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a48437858cb4828f94839fd5ced07575b6b0c8f249215859cca5a3fdf2e60b. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZK6J2348912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e026678a79d3fedb566f0f5253b28afefa6680367893b62b9ce634f0b7c9e75. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZNWZ2322075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9764ee99ce5f50146f975512a4ab368a31de45e398adc4e575934e14c4b558a. 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/QZTB42348753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21c0010709369e55f105768a8c21dbe78fac49fdfb042d9a0eda6392dd23171. 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/QZTBE2342600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537c84aa45af65a568bd6f0c51267d1658ca36597ea6b18e598e05485b892cf7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:46:04Z), 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/QZES72455170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655e32c53f676b60e153ec439f1a0070fcb0930afb543763d2fe3c8504271700. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:59:59Z), 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/QZK6N2449283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde91e5f2a4957b3828135abe2e8aabf8bd76175b7b7fe9db22e97ad83d6477eb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6H2419846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ce2802f075aa1f2985883ca3249d1912a4a86b1d094e6017f830547c2db4be. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZMEQ2478229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd2860d63c86892e0c24a65b5afd00a80c7aa515c80eb986c6761518788506b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTAU2490931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1296974712c4ccf2ff32129801f93d8af9bb39da2cfb42536ada17000224be. 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/QZPLS2419310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f6115d6bf94e2e935467d079755dd3d830220b1412412beb08266864413e0e. 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/QZWV32453140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1aeb9097afdca0af1bbbdde8bff1ee80017e0f22f0bb125d6d20eca023ed1a. 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/QZTBA2413936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef69e1d5235b400b7f6ddf557007f70e1dcfd76bb3d4177a12571ccbb8c0665. 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/QZWFS2430557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a3cbd5042a86d1f2a4cfd24328022a21904ff75b375ec867093803c48472b6. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZN882412376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e4da77fa6f69015d49162d95b556df9d3878c193f67ffee4541aabae38a92d. 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/QZN882424118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11cd08c73db7056d59b434f5294508977c20c1797a6bb063ee1668ad52eed0a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZN882435512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b15c245a2bbd47d66929c6adeeca568806bc2522d1199bb2c11496ba65ef64e. 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/QZN882521062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b3805919725f6b7f0cad6efb6d7a4fe86f3fd29aa5d245b3910104cb812ad7. 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/QZN882551381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91dfc10ca4eab708526b21740eb23716b93025bdea86291a9e87c6c9e2fd80f2. 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/QZN882577531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1ad790be851ba17e90d637ffd5594e66cf9d4cf5ecf6732e7e1c410abec300. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:47:53Z), 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/QZWDW2558122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a7ce709f41c91558fff1892263051518e372bcb2f28415610e1f7f84f95e7c. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWDW2571274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2202d5fcd14a4962552ff0894444d6f520536787c8e2be556d151f43a25b1e1. 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/QZWDW2591391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e7d500b0470d2d7a63f7d29221cbd5b457d0acd7b79db3ca7aac16e158b82f. 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/QZYFZ2511429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ada5700809995cf09c59097fc83be669fac98be7dbcea0b9cde0b6ea8647f86. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZYFZ2518070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cea1454fa5d8efc85e77d356a2c4ea0dad736701262aad13770c2e5b545c041. 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/QZYFZ2521188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b994ab2bb7fd47cb4ddfaa1f2d52813750ba3ff0ce0957a0bc5e953f9042da. 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/ESA012272428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1748b4bd1bcb6a702faf930d72cd2aa4233ce1416ab1bf6e4fa0f6fb7b444b. 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/QZTLA2369698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c7405040bce692588cde5532f789d89a846dbda0fb3dae27f3a875b5a55c26. 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/QMFMF2232701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb0f0e96e55ea448c77c77a11848d49ec230f38be6d4f875ce490adb87c5ecd. 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/QZWFH2344160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83782cbf72ffac435a26506a9a31471eca53ff18adef6b28bb2f862c42ceb0d0. 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/QZWV32395501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97be4e05ebf94df3a2fe9da88ff6406b9fd6e83b515508e5cfd8d77360276c29. 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/SE6HN2461916.