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 0x11f756fa606093b89faa5b863ca50669ef6e5a74c67b409f4b22f874076d4f5d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c055ab5d-6dcf-4962-9bf7-d55021a3350e.json and https://artists.proofprofile.net/proofs/artist/c055ab5d-6dcf-4962-9bf7-d55021a3350e.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 0x8d020daedef79bceda230c9409e95a8b04370090edb37f2050ece57394eb7a48. 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/QZK6L2141529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992297a912613f45e97cdd587509a8a8fd658cad65fcfb87dbf0a21450e4c884. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZK6H2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e392a44ef0ffd87a956b82dbec20dd4b4a6a31d0cb37860edc4f22699e6928b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZK6F2198820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad222a7b1e3c4956002d81e6ae53f0846aec03dfc6b5fa170859af439c2fa2a4. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZK6L2170031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adb913a7e1532f419eae8977cdd3e0f5c7829631da8f997d981c17c936b3ed7. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZK6F2149988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23433fef6cc3c6e0451035ebd3ddc8a2748ec7d72f34d9cf38b4fd326db69816. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZMEP2116960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196bb480a05ea8ae117925b26c6cab551e1b7c4a87b6bca897b7031db1c35281. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:07:04Z), 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/QZMEP2182545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f3517327fd1764f77e38142956edcbb476a1c8f785ec15c1b1f7d7d20cb0dc. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWS2194239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7db88eff8a5a3497a8ddf6039225de99399affbdc8c80d5f1c2f6e1a3f33ee. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZNWX2121292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16d60e89cf45d843f485984ed3902e9efaf144e200c7d819600690f41068785. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZFYX2292806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56705847693781fd7f6c1f6c2ce6aff7ae0da7fc9cd1590b309b9c10da840a42. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZMEN2270593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b90487d93dc8cca0b9999d4eb239f9958a0c417f5bb686ed520f2f66743505b. 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/QZTB92237873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63794470418489d606c79b28e9eee3b6bfb5236f881224d37d33bec2d320a637. 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/QZDA82356149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59a30912deff3a02392c57d189680f2175416efd6f8f5f0c55b1a914ca79645. 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/QZTB62399671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037a73fbe8cf88ec5998600427b64c83dee40777788dc4e34469759500fc3c03. 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/QZHNC2476157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb3d7b9d1a226dd3159c32a25e6d52d7049d1fd587b064dbbaea89fbc96b5a2. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:56:14Z), 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/QZNWS2494382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30886cf855f0287d39d63914451efcfc8d1d5b3a95a0a215b005df6a68c79220. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZZ7T2494423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46863b514ec00805cb6e42769ca8935b2265e98887d32982738820f84db30c2. 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/QZFYX2552789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67392ebfff412194a094817d593aabee7586a1a3c6ae267b20a3f3376f8c477. 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/QZES72592122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53b9df307bd4081ce4bc8f2430ad726cd3cdee49282b55975bead3dd6cc0d1e. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZHN52551345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd647ea4859c30fd8dc47c88c2e513f16a17d5dfabb4a66399cbb72ab4ec8e651. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZZ782537542.