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 0x2b170a6e7a4dd2787645445b6b43cbae5475c5935d6dcf68516b5e0064f78393. 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/20ce96b9-4ee9-49a4-a12a-b95748900459.json and https://artists.proofprofile.net/proofs/artist/20ce96b9-4ee9-49a4-a12a-b95748900459.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 0x365ddd1e8e35be14c0d80b24c6f29d812237151fa85c95d6e380b2b282049f34. 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/QZHN92253859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8c609e28e12542b6e1fc5dfc814bada1fb4c7fb03ccc2c2dfefbd690964d8c. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZHN92253860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd945c39bf054c8718b018891fa2d4a8551cb9e871c27f5b15a5cb4fc97351448. 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/QZNWQ2327332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e1ae72ee0c05e4346da697d0d795b8e13325f8019c0c8cc011937f77fbefde. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZNWQ2327333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27addcec00fa2b73c8af18ad24cf766e5335dfbcd5de3f74597e5bd09c1bf8c. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/SEYOK2055077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4827276541e2683280ac108c91125e90777660c196e3a862d08fd67dbc50d19. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZWFM2394931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1dbdb35df57740bc6c790360dcab4fa84474528e210fce09ca7a2477ad11e1. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZWFM2398206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa7f397338b63186e4fd64ac244eb237527581944fec36995d3d1be9078a1fd. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:02:34Z), 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/QZFZ72447407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ac48a115a4cce95940637392d51f349bdf814c49fb45423ec59c7e80b6196d. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZFZ72447408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1dbdb35df57740bc6c790360dcab4fa84474528e210fce09ca7a2477ad11e1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZWFM2398206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fe75806459bfa2184bbe1e47fa7157afade7f77ee32fd26de17c3625d3e377. 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/QZWV32420743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff20bb362edabd3de5c7e4f60e0fab01aea5f68014c07ccb03dd193842f68fff. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZZ8A2414044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fe75806459bfa2184bbe1e47fa7157afade7f77ee32fd26de17c3625d3e377. 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/QZWV32420743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa709b94740f01bb24646e4bd75843bd9be6e532140ebb0808a20606bd89c43dc. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZWV32420747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4753ba9880b34ccb8336747174930584522c973fcda58cd0dcc15e233974777c. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZZ8A2492329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c554c7641228a9a05a2ce13c03b743f91b2d3f42134e2f164dae9db21a3ca5a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:10:30Z), 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/QZZ8A2492333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cced32fc9c12c4096a2946d0858ce0ca47f3b1765ec8412aa047b8d6fd7fcfe. 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/QZZ8A2492347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6ecf77bd20158c7253e34a6a4a10de28d6f81f83c846fdfe29b3f7804d5c26. 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/QZTB32477744.