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 0x8cc6d911f5613265d6a4ce5be2c353b2a37a40b8b4c4541c79c7f17c2ef87f25. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de416cbb-f7c9-4511-84e5-3d07c119b9ac.json and https://artists.proofprofile.net/proofs/artist/de416cbb-f7c9-4511-84e5-3d07c119b9ac.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 0xdfc2ee286fa56b7ea4aeee175eb38d9c3512eed338b8096b728e9ea2bec370d2. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USHM22324385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbec26cbf90ed56339aacade3ae6a9bc485fc727a77f37dc312309318771cd8b. 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/USHM22417802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73aa969324f22dbd24ec0cc9c7c772ac4538063c2e42883794d5479471e2c290. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:34:23Z), 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/USHM22417804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0c32cf7d78bb0fd5ef0a2039657a7220ae18caae57c56670bd439c6d02b519. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:44:48Z), 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/USHM22417805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c12128a1b9ed5041eb300142e2936a8795c9591cd2ef7a7d50f7bee8dcda37. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:53:42Z), 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/USHM22417810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6b66aed5d9182cbfca6009d22849f309d2d5f10c7634399397200db168148c. 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/USHM22417812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74a94742e4e3af2b72b66bc4df8bc38c2c9cec2c0b422f5d4f3f7acc6a15e8e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USHM22571321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a81d626f1d9d4da54fcfd3c810e7bd142a3f64bf00abc19ca748855164e723e. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USHM22571322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592940bfb76e0d530a3d91d0fa249e0591ad1092059539f31b7b94dbe3d08cdf. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USHM22571323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ae353deb3035460f89e3693f210728c7832634eb4a30aec40723fd6fdb7abf. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/USHM22571324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc430ec7cf4339f18ab653f7c5290a5aa35e89cfe744fff83038415889f7f93fb. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/USHM22571325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94908391031d22dccc37b42b1bb2d5628cbbca30a6737b040ff812f38cf5479b. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USHM22571326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d12d3e7eff7b8619c53f9676695f412e7608e0f6187007a0a899515a1dd8be8. 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/USHM22571327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cf89afa1c410270d3e3d6dee841d6d03e660d0afac71ecddd3323e80f1e65f. 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/USHM22571328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c9247f6f2d7cc081b3743123f74437a0feadcd13cb5b956164830c2413e5b0. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/USHM22571329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce564852233c6da5a3d17bc4d1e9e12f7caf50fe602c2a8d2f9c80c5af851580. 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/USHM22571330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427eb36c06ef6a9318854ee5d8cfa5065e4664982238557598ef5c10131ee04b. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:18:54Z), 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/USHM22571331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b78b7e51b618965b7ea7688c59f6e6c87b90156586c3d220ccd5e22b6ff48f0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USHM22571332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92472a64e1474b2de6bb357a8f895e5c4c301c78725ec1d63f3142260c825fa3. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:36:14Z), 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/USHM22571333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69dae3acc69b8c96b800ef7774e4ea480d125b3265335b889c68d0f45dd586f6. 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/USHM22571334.