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 0x29f2379cc5e92a7c21ee6b8876e55e2e33de741a696c23a7a147bac0c19a6be3. 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/ae635b53-0f05-428a-a6f1-72985606e7e3.json and https://artists.proofprofile.net/proofs/artist/ae635b53-0f05-428a-a6f1-72985606e7e3.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 0x26435941591e269eb9cf2fbceb458cbf0dc706534aebd4ae2bef44c76a9f7e50. 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/US23A1536287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4e4b586b2b6a9ea1c1f13cad73861da52f8b9432282fa49f0b30b5a61495bd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US23A1536276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da2483d9ce602bb7bc5cd7dc1700d1c77275288ffa9334f8f7c82e9a48c29b9. 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/US23A1536295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a32c6bd1846defd743311c8212bcda1917e32f2c834be435d98ede345e892e. 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/US23A1536437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2f103028e33f70207ba8e941f2eb9a175d80b0cf66656394b78d7ac1c788b0. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/US23A1536930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c5dd9972603e52da0245ffd59a47f9bb763c5e7f79bd697167c3aad3b6bf01. 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/US23A1536933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d156be72f27a6a1b9deac84caaac44c7140a390ea53e5fa403ffb95239dff5. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:07:10Z), 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/US23A1539147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e0153b998752fe2f5c0842dca22ac2fb1fc2870e4a50e0475e59364dbd8b7f. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/US23A1539348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbace6a48ac6da6eb59a1b57941d0cf0bbcde89a9f0c76713c9e93f6834ef597. 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/US23A1539944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1314944e39dd3bed233c534544a9a9954d4d8ae138188aff07bc78ca86f30846. 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/US23A1540641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4f675d87fcf3a9cb71710664dddc6460456ab24832c1c3d2fd9842b7ff4c09. 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/US23A1546916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d807c54e5585c233814ef4c360bfc220874960b28ee992a8f7c4aadd6ed9bf. 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/US23A1556670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4a91adb0b2014fc10206412957b6193e9c552d04ecf33baeb6960da9f0c7b7. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/US23A1557194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa337b345430ad03f9de112dcf23570ccf3d2d270787ff4d8539f7afedd45c01. 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/US23A1557742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f5ac01e09960458356f0e2630b20ae26d7f4b9c6e88cf99d10bff5d9bd63a0. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:49:29Z), 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/US23A1562950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498a1bef3619f650c1f178421eed5a9174b849aca65e7f82e989a8813f1a3937. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/US23A1565604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a22775426268ac729b371c7f7791049b30ca63f9b8a91c62559b820f6ae8ee. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:58:33Z), 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/US23A1588417.