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 0xf2222b6853f627837df16d88090b853ba1b521473fac2c449241b3813bc389f2. 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/c58f70a7-728b-49a9-9978-f853426cb6f7.json and https://artists.proofprofile.net/proofs/artist/c58f70a7-728b-49a9-9978-f853426cb6f7.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 0xf1bed162231d65da64699e686d5dec108d9bc0c59df89b550bd693440658b2ba. 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/QZWDD2334599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca6b19e2fb95ba84112bf705ff2c318b88a159f239b6ed6114949a57b99857d. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZWDD2334594.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a99a9e3c4f9982ce14454ab9e417df433accaff782df19a2f31c0e5e7bd97b. 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/QZZ8B2398835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c02c58aded6968a6504944b2be5af27b525fdec5051edcbf40d2ca4f445be9. 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/QZZ8B2398838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8134f3562f78c960d46020cba5b8456d5910cad881bfcaffff6145f8ab2aa9f3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ESA112430818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96d538adf755fcb048bb1ac03db893b1175c0138715aa9e59e23ad423d95ec2. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:04:22Z), 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/US3DF2419762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea371df71450853f8753182935659fda5b72b388366d7286fb36a1a6dc41e316. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/US3DF2419963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656ecd5176120c384879dab5c1c199af310d558a825770fc78967d764cc1fd7e. 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/US3DF2488685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0bee51ac06cb71676f65d7c18a355e12f8851d0ba82624e643909c3b3ac73f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:27:34Z), 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/US3DF2488689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5184b47ecc48bf923889051c17d513e78256e7ed97fc3e9fa76151878506e5ce. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:40:26Z), 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/US3DF2488690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae28898331604b1eb14e18a77b0b2c224cdff5daf075092819fe48701dcf155b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USANG2455129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e149b5c96e3006746a5169680ab6ec80d5275498f85017ee5f11245a5caa2d3. 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/USANG2455132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c47b837db6470b3a2cad9a2f0eae0f21a7dd6a89fbf99787764e038245f3f4b. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USANG2476927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea568309c1c6866c8cb04f0053ff266c95f2367ab299ddc30825934b82f90265. 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/US3DF2507300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46663770b3aae569b7f01e5912d2dddfc924d71d083e595633383c612e63fba. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/US3DF2510315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811732b5f835730df9d95b365d2123de296a93741a40869850b648f00c203519. 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/US3DF2510325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55e40104c50a6fe809076378038d008f87a88ea85aad9bd86a70aa96f4fb5a4. 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/US3DF2526947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe75ee1e6c02c550d6b0b5f4fe36399eb5a97cb00f590e092d176fdabd3dacd9. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/US3DF2526948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8792d890eeb65484e492a79232a9822f5700bed15c4a0bb9c6e69a4b7642017a. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:32:45Z), 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/US3DF2526951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62137b280eb4c6aa706e0492d7d50c86973f8f58714379841f87b6e7e067e8d. 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/US3DF2526954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127d95c82b1ed46c23489123187ad00cd86861e26626ae609cd72a412c834c9c. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/US3DF2548669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c4019596216ce7ae1b04d96af3eda548e9f365a6a6dbb1604aba4c69340911. 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/USANG2524105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85caca299c58fe791d80ca52a70738521467d3e1ac801aead149b4a01cfcab1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USANG2524106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d9553b12060cd82abfa821a774aa7c3a995399b8a0a3a0e2163b01caaa3fa1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USANG2524124.