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 0x583f55621fd12a35d52add052451babce4fd5a3c10c4f8ab22084630279349cb. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4cc6628b-5bcd-4254-bb6c-9c67ba1a7e40.json and https://artists.proofprofile.net/proofs/artist/4cc6628b-5bcd-4254-bb6c-9c67ba1a7e40.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 0x1ccba001d83283e5da069469003b5b2f2d8ae4e1c0aba2b75c8b04ab38d32120. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZNJV2085980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdc35921d286f32b0e031b15bfca207d916dfbb2ac346ce28ff88250852ae0c. 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/QZ5AB2190717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5ad955eea6757eaa17cff439be5ce8f876dcc3340edf9f0f10bcf338c18da0. 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/QZHZ32105699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21b46bd2001ff69e04187fb755204fbfbc1f0963cd08901396d2ee813190511. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZGLS2102143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b49e465f8b3cd7bc7cebb5a9f1eecff15b1548f16c3745a8fbf82a6fca381b. 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/QZHZ32133252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4144796b842b8ffbd8f36eb253e8d2ccccf626dfc74aa47ef6ab07d286567ee8. 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/QZNJV2115997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3e8c21423f55cd9a94e2a9bd27cd5e5ab15e75b4d97f6ab580b271b1ef6004. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJW2165647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d7ae10ec3dd4ab186bca82f61a0e606417bc8f23b78b9d5197b0c0dd619ecb. 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/QZNJX2183492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4144796b842b8ffbd8f36eb253e8d2ccccf626dfc74aa47ef6ab07d286567ee8. 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/QZNJV2115997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1cbcef058a350e76f8ee5be9953d22182c3f60ee0aef5238667dbcc2f97f6b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJX2183493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3e8c21423f55cd9a94e2a9bd27cd5e5ab15e75b4d97f6ab580b271b1ef6004. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZNJW2165647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2500ea41068a061991ce518a3c5ef1912aac7cd5a9ebe11c05cf88ce2f8af48. 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/QZNJV2201249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c0408924cd60f52fb60b6955990ce561d44c11533ad4832d4720bdc38ad83a. 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/QZNJY2291546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2500ea41068a061991ce518a3c5ef1912aac7cd5a9ebe11c05cf88ce2f8af48. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/QZNJV2201249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702c0d6013491ba6b0b0b270b5c2bfb115775f6589ee830d76b23b1d9e433d75. 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/US7VG2330101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c0408924cd60f52fb60b6955990ce561d44c11533ad4832d4720bdc38ad83a. 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/QZNJY2291546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e5f7b03d734de2a1f0f628c3ad0c19f500334b3c2bc2e8112735c5feb483db. 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/US7VG2330102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42298187323ecc29337f6d7a000687ff140fed8d619359b874a4fc1c14d2847c. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:01:55Z), 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/QZZ662325338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cc8161153361a2e4109722247463074ec57a0ac3d542cd74455f8c06da10f4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZZ662421207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e0cedff51595120f3a7963b74333cb9c95528cdf374d346929dd017f28ec40. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZZ662463162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750d6e9a23ea558b0fa63ecfe8a64fe7aad2a16d31e862b8f00fd0afa0cce047. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZWV32456469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750d6e9a23ea558b0fa63ecfe8a64fe7aad2a16d31e862b8f00fd0afa0cce047. 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/QZWV32456469.