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 0x3fbeb043b0abe18dcfa7d9bcd5ee29e4b349707edbe28b7d9b6da5f94e00394f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/67d00351-0658-4da3-a8a1-fd07cc267bcb.json and https://artists.proofprofile.net/proofs/artist/67d00351-0658-4da3-a8a1-fd07cc267bcb.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 0x8365132531e3eb489a72956f5184a8ebaf7cb7a3c4ac2368e97df87eee4c17bd. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:01:06Z), 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/QZDA61963729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab9b20f55715339f855eba9edbed5b657db92d87f426b0141e68bfd00106e79. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:53:34Z), 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/QZDA61963732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db842028c70ca11f44bb84373c2557f04680aaab11f5921f52837e64cb96ead. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:44:26Z), 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/QZDA61963733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cea8f84f9ce77503dc95f593b5c54ccd2de750ea003eda210f08c9e0578c7e. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZHN81984070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cea8f84f9ce77503dc95f593b5c54ccd2de750ea003eda210f08c9e0578c7e. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZHN81984070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4c36bfd48a4a5822098bce1fad9d6e59cc439375e18d4efa5b2b600a516e0d. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZHN81993964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f726b686a59371e7293057347cb732212320e5550cbc63274c79ca6893d4d2b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHNA1959142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b72ff95cd55a31851255386a9bda6fabc013bfe1611c1ea62965712342d6c24. 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/QZHNA1959143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512cc12ea70910c042f1325620f3a69d0f68a9bab272a9c9c64cfc0fb6465752. 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/QZFZ52065525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a9760b489e8ed405c0e00ce0c8b17f9600f430c33ede31692802f6b36c976e. 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/QZFZ52065531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5cf38b065a5a2d0d94193979394fe09a6cfb390577512e26eb158e192545f9. 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/QZFZ52065532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1500f11c91ca8b27dedba55038e4ca036c4c54af1060dbd0c8029480e06f6ac7. 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/QZFZ52065537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef46a0a10441192baccd7c4d51fe491c8360a2e29e84b59b00539435becf4272. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZHNB2089589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57df994b1f386407acf52e666808e7c39a94b6c2da06d939314442f290f8a6d. 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/QZFYX2111927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fda4617beeefe635a07f54198854e88e265ba163f5833c01d5b304979cc9669. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZFYX2111929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b94f66cc2817a91a6ac6b2834d8c8b113e3ebbf270654337fe85128115f7fa. 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/QZFYX2111931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438333ebe9db0bfc40ce0306d9f87181e43338a02e661550df5136380feaa3d8. 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/QZFYX2111934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0159dd64961218219a666dce36d618cc9715d23c10e2a208e90e672d312de061. 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/QZFYX2111936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cd83850a7d1112ae673e64cbf6f4f50077817a86499d4a67523370a4ee20e7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZFYX2111937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc248ef14642634743ad7f989f0db1f068502945df21134e8ca9bb8f28da2c05e. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZFYX2111939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4317ad698714fc4edfd0563b783065a3dd88bf0bc19e1603bc0c35953a06a4d9. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZFYX2111942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319a58c592be9c7a4af31c83090c4a743ab86d6131ccf9735cb75ea37e833920. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZDA82275668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1271c3d8a412acfb9aae2c18df682bbc0c89404308cea7bd303b55dcf6b7550. 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/QZHN92447690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb167164ace2cfbda09004ec803b08a1bdeab449daf0faf58503470580b81a304. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZNWQ2489498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd3c331975225665c1f50b0e865ccacd75d36d1e69dccd3dbd92ad011712378. 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/QZNWZ2441577.