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 0x4c1fb1fd76f708fbf74fe26d0cc1ef59bd50f3453c7b66c70f430d1ac6d69617. 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/591aca62-e5fd-4690-a65d-ba0c8f7a61bd.json and https://artists.proofprofile.net/proofs/artist/591aca62-e5fd-4690-a65d-ba0c8f7a61bd.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 0x1b6a5203fabc9edd5552c0b059b708eaaec3bed5b1080d80c0c76e593a5644f8. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:37:40Z), 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/IEWNY2417365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe271d8cc563e8e2b39a13c282036770968c8592a2d464905d0cf432119004f87. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/IEWNY2417369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65c3e59990381a67b680b27e648b05c19bdb60ebdb159bdc1ed4aaa8a3dd958. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:43:06Z), 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/IEWNY2417368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef52342cd83b4658e0f996d38a3dcfe3394d4759787a40333569dcc838a8f75e. 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/IEWNY2417367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc01cebbc1baff50a56c815a83f0283aba9ee4622269aced72911c8235a42a55. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/IEWNY2417364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f91bc1fb1a4fc5be688a3b1e31d1765889384f8c9178588b528566b4c023b4f. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:38:39Z), 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/IEWNY2417366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b737b5ab1410678f8122dc904ae901dece7b834ff092bf7c3a8fe0b0e710de. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/IEWNY2448262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8f2bb3ceaa5067a974d9366c8961b580b6a54f73c1f264438793ce4180514d. 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/IEWNY2448264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84643aa2368f0956b98d95a693fffcaed7591b1a9c8421d2fc58f206836cc226. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/IEWNY2448265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523908f76120554eda5df482bfe467deed44e21d18d442dc4e58d49c89a29b87. 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/IEWNY2448266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441c00e76d5ea23bd99bedec42370dd247f6f025a93cd7e019116147248c8a80. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:40:43Z), 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/IEWNY2448267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f39ccb2dbade25802abaacb78675cae1a46f390c5a9b13d98eb1818065a3bc4. 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/IEWNY2448268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa6bf4002e685c68628fc29a2a7c09576269be118c6f1b5c18edb53c9707a32. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZQAY2426551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd417b82102e811a22f59f1d1ff5c784cab2ae091d5b48f9841c69f20dd48fba. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:00:43Z), 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/QZQAY2458908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320fca35963ca4fc9eec8804021887a146f3084270baee11587d61e5206c4c7f. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:51:29Z), 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/QZTLA2431026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb682414bb32c293adac04694ddfe4533ffbf61b869fd2e56c2e1dd4b2e4112d4. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:34:13Z), 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/QZQAY2405366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e465ddd3ab584bd5a6554a7a2ac73fd95458afeb9bddaab48991e8bcb58c27. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QZTLA2414461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e96b6dea8ce6aba4b5f1635f9e389be83c3da1d4fd551b15d73ba6aa2e0bb5c. 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/QZQAY2420550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a80cbbac1636e27d89a33e9d290896c5218257b5eb630e1e88e0898689da35. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/QZS7J2481448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a80cbbac1636e27d89a33e9d290896c5218257b5eb630e1e88e0898689da35. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:56:24Z), 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/QZS7J2481448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4512c21b65914653a85ce53bc1afb9da9c5ac6e498dbd466fb89ea1cd6f7260. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZS7J2460998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac91f9137477b6503d561a9fc6d3f71c6b2477e482ce2e9e6aae9da8d704d0b. 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/QZS7J2420557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec85d086e5dbcbf78edb0f828a86023180d8c0ec61ca39e91aed18226b1ab8a2. 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/QZS7J2414317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d23cf7334531dc3f8c2b9004b7de19c37b8a6e3737e407504bd74a91582be12. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZS7J2409916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7267c9832b7c4695883f7631dea7d90c6d706145b237acc45b08e01d7b404fc. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:22:33Z), 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/QZS7J2407218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e21d4c8dded8bd199458292340d713fb61ac5c495ef3171a653ce65bde3423. 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/QZS7J2562229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74da96d0d38f9a4306f00b14388b5bdb1903a420c2cec23c9ed3cb2fd7430d4b. 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/QZQAY2577579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0985f5efb11211af61646004f0211e376d3a710e23e7ba8e51b5fe0e5ce19e1f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZQAY2572824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16399f01443da404bf3aaab105dd5dd1fe16921a04a6c7a94beefddcb2e6db02. 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/QZQAY2571265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e67f6930bcd7b32e498e1958c0abb2dc63735aad0b500d4564df6b8333e32d. 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/QZQAY2597005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960b7608f73a13ec7902ae2e17e3107b675297fd0862e2b7c73baa48098a0111. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZQAY2559220.