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 0x9915d6e242ff4375c5ef0e1a78223b2da5d46b4ed22ed843f6d6b1182687dd92. 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/3cda034d-91a1-4e64-9912-4d759fac5ddf.json and https://artists.proofprofile.net/proofs/artist/3cda034d-91a1-4e64-9912-4d759fac5ddf.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 0x6e7d3ef612c11f4bf16b621355557cbced02be436e9fa9379cc33b28aa500d21. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:23:29Z), 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/FRDLG2100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18693603958bca0a5693a6289781f4171b2bcd934ddaf1c16e889c62d8ac307e. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:21:26Z), 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/FRDLG2100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772553dc6d7c1e808727b39385da7c5d22e6f9577e9c323d2a3825476d503185. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRDLG2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261421843a361dbbaf3294dd73a08df5c3b7a2dc297e12ae8c51043fe4b2fc5d. 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/FRDLG2200170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d77315858789c656479a173f6e29acf2b21936549047ec49a26edb0be0c72f7. 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/FR9W12319709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cc9375b31fea0ca73ad9cc4b2660766dd419db57d612141d8f7f1c087f13a3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T04:58:41Z), 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/FR6P12301300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51d64d285ddc8b5150499b47c1e46a821e10ef75214347de6a206094ca2cb0a. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/FR6P12301480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cc9375b31fea0ca73ad9cc4b2660766dd419db57d612141d8f7f1c087f13a3. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FR6P12301300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a297292bc6d34a51a11d19555d4b20ed289403eb345d74c22dccf43289f4fc. 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/FR6P12301970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf314a33eaad265861281ed5abed10a1f06a4666d3f28e97a15a1addb34f24bc4. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/FR6P12301940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74ffaab6062d4bb7538ab5b52bc6a176585d9acecc21b64b88e4470371f8fc1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR6P12301980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168f86e0ed32537696d87f5a814a0dfdd1ca5ffe297bf95868afe5c868129521. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:02:18Z), 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/FR6P12302000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2696abc03c947292d79b49d99d88dcab6e71657e412feb5fe6361d75afe5b7. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FR6P12302020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838f68f912c7f4b64ad6dff77b2e937cf284e697b5e8d9602119d936c77f1988. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR6P12302030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f25c16197bda50ebd4c52b1f03b28f8f7e940559648f49137a8ee935b8c91a. 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/FR6P12302040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e832bb140b3eef2baa35618c6ff8fd2128220915269b56be2505028739e0675. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FR6P12302050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412f86285edcc88f97d914ae7f2aa33371df617339977076bfc2c07f6df1a003. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRDLG2200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc3a774e31f6c982e2ff4930da1977c06ec9d4d11aea7a845922598cf6dd76d. 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/FR8R62100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2379577ff8590ffe78cad28783317873e8ca77f3ac2fbaec488b3cb0131b30. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR8R62100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2379577ff8590ffe78cad28783317873e8ca77f3ac2fbaec488b3cb0131b30. 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/FR8R62100003.