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 0x86ee6998cfefe5159844e895886c2701af982c5a4ac863c63ac2da0fcd91992a. 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/d62c31d4-e854-44d6-87ca-f3399025d6ce.json and https://artists.proofprofile.net/proofs/artist/d62c31d4-e854-44d6-87ca-f3399025d6ce.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 0x0674c2da5d9108472f67cf71945c390434740661768a08463abafa1287b1f570. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:21:21Z), 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/QMEU31408388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2664f6fe04a0203bd83bbeab1a0b154fd4e3c96e2f9755b2a92200ef676e30. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:18:43Z), 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/PEBQ91780458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71a376c43879d9b012622159f9f7bd6b6b2b6edd1fbc3ad35a84737b340362b. 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/QZGLS1918301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d1b67568ccc0c7d1d3d2fb63d838b75a2af2372211d5817840e1313153aa24. 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/QZHZ32067088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef1f5a8846a7c161b33ee41393548fa1869ac76a3b85c083b99f125813d38f7. 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/QZHZ62033033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e35ab8fc43cf9ff9f25dcb857a8e5b5bee3ed70a1c86efc9b2c2a1ec22a336. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZNJV2207662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a37684ffa69edeb7228d45ce19792658288008f15c95d5f571d517d374ea8d. 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/QZHZ62288153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391608d19f3d671044ec149c493b7db72b5b4576ab53a756da46b3b8aa3227b7. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZHZ62212954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b95da9209e0cb6429ba5aa6c966bdc876e0bcf4a2566204079e7fa96ed24fe5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNJV2207667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45daf1b63eabce3b1e0dcc46434345ab9845ae3d9a2bc1e25ae7d5e452119d00. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:35:16Z), 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/QZTPX2356168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29450cb43eb5646c4de7f800788556cfc27f463b7fd7ade67ccadde55e12595. 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/QZW9L2306164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103894cc852e384ae335576f8b45b03daac6e06f9035eff82c3f14c46bbdeb16. 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/QZNJW2498062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2269f545cee6c68a58535c43ed2163433acb995b5b15b026ed61b843db30f1d3. 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/QZNJY2419233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020db62c90643665c9036ea84ff8093e37c60eadf11f7766af636e75798140da. 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/QZGLM2452896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa856f20e646d53179ba506ad7dd87363767a4d86bcd5a3459f6caf15726fcde9. 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/QZNJY2343325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1762a0645157b82e267f65b50f5e673683d008f0b7d3c813a14b73e82029df7. 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/QZNJY2432091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf640222b0dd1aaabec314fb88f0f01c4cdb71577eef12c15203db1192ef54a51. 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/QZNJY2432095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2269f545cee6c68a58535c43ed2163433acb995b5b15b026ed61b843db30f1d3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNJY2419233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea516e2fc0e98650c1a8c43b86b06a4190909f7777fc8d48b7261b1fc34b41c. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/US7VG2583494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364e456899895ba682621f0fd2bb7898406a53e7c5301f9868ca8f4d5bf46279. 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/QZGLM2572397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4ab96249a295ad1aadef13014f6e0e5cd7f04df8956e1f59580586df37ff8d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:28:27Z), 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/QZGLS2555238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccaf9786ad0a912d9932752300359fcbd53d3bf17ce93f9b4e70f00604f96dc. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZMZ92527959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce46eb4666eaae0a20ba984b30d43e868f7e983054a53da592d852b843d02796. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZNJW2529604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84a87ac3f2b331d46108663eab2bbbf1b5c103be05a2c1b18f238590e44a9ac. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZNJW2529607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd37177db269e665db14253c5bdbb8b53861ad884b5b71776287902f8372615. 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/QZW9L2301396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66e66c54b8d19851234457b41dd0b9b453c993fa151ce2db3e3d631e2bc92ee. 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/QZHZ31930013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10099437d65ba5392b8b45bcf420e61f5d93aacaa4d6fac0d205da5f900d1a62. 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/TCAIA2445935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c27fce880e8a8872c79491049e9513ebac75c6ac0ccb996da4e6ea7a3e8622. 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/QZNJX2177787.