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 0x06ddc771e3898befa87d4abba63bdca5da05b0f9cf0f3e7e6786c6a532567fbe. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/83484abd-8447-4038-9d0d-01c62b6a8296.json and https://artists.proofprofile.net/proofs/artist/83484abd-8447-4038-9d0d-01c62b6a8296.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 0xd9e05346c526d2a1c354c09036521bd34bd811ea0ee346b3d72869936fc0c2f8. 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/FRX852100400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253f482c4e7acc1088430053b79d9865f2753ce86ae38ddda8263c9cea7ce9f0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BEKV42100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e289d8619628fb13bf2b2dae5238d546c9a900187b2e7481301fcc432598ae9. 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/BEKV42100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e05346c526d2a1c354c09036521bd34bd811ea0ee346b3d72869936fc0c2f8. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FRX852100400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c45878d0ad9567410dafaeb95adb8a931440da82847ec6b04fc61dc445889ef. 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/FRDFA2100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f735de6716bf4f522d9de19b64c0a47ee9a501e83ea0fab728396f3a190835. 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/FRDFA2000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6574dcf40e0309bdb3e18ba5db947886ce1528cd8247d93d8bfbfcab7705c4e. 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/FRDFA2100160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd171647da92e6dee4bb20ad2ed452ca680d9d66e1a605c761d5446f6c0f00c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRDFA2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bad02b701812856ea4b319caea682ed6a846b9a4267c6956d0e5058a4bf0630. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRDFA2100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b4fcf982e50778c1a42a94c8d3feb1de59957e587b9a409980e3e23043dce7. 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/FRDFA2000170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d61bb40a7c75e729c8e590640b92c0d84bfe7c4a2148ce27c5a437109b6ce84. 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/FRDFA2100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa05511da23bc12d39792dd21f484aebb857e49bd22e3c705ddffbae9ed9621. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRDFA2100120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2796accf43cecfdf936d81797beeb09aea3985efaf3e69789e29e750f59a57. 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/FRDFA2000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c752c51f929e514e664edb9fb95755f190502d16a43358e03573ae419f1de0. 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/FRDFA2000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a241f4ed0a1624097f9c72a11cd9ab1a66029bf243bfebaa922ea50e87d8c0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRDFA2000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba345f5ad535ee5ca3690e1e60e05e94293a963da48b37c6aa59d3f74e7a1e1a. 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/FRDFA2100140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5486e99fd44573a9683811ef81c6944fe0838136658c20b3841cbff100c8e401. 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/FRDFA2000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1d9c138241489717c02b43d66f9fce56e3fb8b7996aeb048db93e4a3c1d48f. 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/FRDFA2100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba345f5ad535ee5ca3690e1e60e05e94293a963da48b37c6aa59d3f74e7a1e1a. 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/FRDFA2100140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846a925505c91ab08efb211c96ee9e0fbee425fccd7557f874afe9e953f22406. 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/QZNWV2023959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dadf9dfc70c08c8c2d44efa956d59fba5ea6a23209eed25f8588e914a243cba. 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/FR10S2235367.