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 0x83f118c40ed1da6f333db14285a602a3369cfd4a8fe59439ff5069c6ef13d94f. 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/cfde5ed6-0cc9-4a4b-8774-d5d2e9e4894e.json and https://artists.proofprofile.net/proofs/artist/cfde5ed6-0cc9-4a4b-8774-d5d2e9e4894e.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 0xfd8e1f24cd011b2abb1bba50022addd0eb16e561c710f499ab62f91295e2ca77. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GXD7G2548272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce15550b1550279c3c97d96ab9730f7356aa435292ea7d3071c8ab9d5cce487. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GXD7G2528634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8e3bcfd47168d3142229a0223684052a604500180084969e0d0704318b556d. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GXD7G2502581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38542c1d744f36167d4aea69d5cdcd790427711140ce7c8aa28e36bf00cc4f32. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GXD7G2502997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e44db53d6f579ba1b669f96175902554f5fd847f0a66ba05a53a1a154ed9c3a. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GXD7G2592419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913a7b4fb16b3bc30b886ada29e1522e8601594804fcaf8fc57277060adf8512. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/GXD7G2561952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c6574e705604acba926dc80938aa22e70450ce9aba34096a05cfeed6563cf1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GXD7G2514822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf9e329dc82a9a00f7e2538ea3e678c0a4ba92ee305e76772fb495d319c020d. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GXD7G2540152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b970536118ed413db2e75b2e3fd3645416ab5e14ded15e61c3f427be5ec305. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GXD7G2577079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862a14f3dbf29f37a665548317f3c3520aad06c7235637923548f3e86f470a5f. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GXD7G2581612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20278c54ccdeebeda70968400380144773eec0c9565e0f49d2fabe1aad83ccfc. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/GXD7G2547955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412b25cbfebfde4f66721f5db7f467f7186563bc336e9d3d72aaa4c15a116c6b. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/GXD7G2567667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2066ec011d8556535de84a21e3dcc4a0c9ce91fed45e9994d00cd976c7416eb1. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/GXD7G2586690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de3c6f289bc20fb4e5a358b3db66af28ff0ac3d6af602d1f1df9e434e32f4fb. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/GXD7G2541921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ba9129b89cc812eabce03996b7a7ab24032a4aebd025f8bafcba1765886c70. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/GXD7G2581733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c0051c1438a99aae8ce855c65030b0d7e801bc1d712d7cd4c13fddbcde5085. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GXD7G2552212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd64e32f27706589229ee9d6cec8cf325eb0c4a7371682dcd389ba1edf4d2816. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QT5M42544026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49ac1dc0b9e1b7dda2de00136c0bca164239968068ac27a9389da8ca4a65862. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QT5M42518160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fe7773f8309f27513174aff5d01d6e82412d46d45c86f01ea33415b6b52a85. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT5M42553235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bf6a55a24ec3b2b22e295db17c2abd62864c8c0e665b4b8f51802eb1f81895. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QT5M42533406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe633a4d4020b897f24f950f30839882133f30ccc752df1abc604db3793175430. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT5M42597564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39ba60b6fde0fd5897738a4d33b432e0f9296d4220bf6fe74152e02bb368407. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QT5M42506429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5570a087ace5e8b0cdaf196453bdfa03e9e8ba8731c3cd9a7214356dd3091324. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QT5M42566645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6462aa3a7c935d1c9d6082fdfd24ab8878fa3d05e133636feb9edb448e412f2b. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT5M42550080.