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 0x415dbaf429a8a80badab29442cf5b3f5c2880ee01c87da4804d0dbdd1271ce7f. 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/27cac806-8fdc-4ba2-a1a0-4cca7afc498a.json and https://artists.proofprofile.net/proofs/artist/27cac806-8fdc-4ba2-a1a0-4cca7afc498a.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 0xc241585deaab7494fd870d82df4c7d14cf474ae4d5be15b479529faf1c9838da. 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/CNA791900744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ee8af0c8b1217dd496d40a6f44f3e90f2669e75914eea7b7dd9f0e33e7c989. 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/FRX202131102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac190ed95501db7b8b70e637cec801a27b6f34be3995027877948263f222202. 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/FRX202025814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bf15f5790adf082dbb6c853495c14cf46258ba9ea45e9fa22df56ed64a1a85. 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/FR96X2252632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa7e78d1473fd13205c7b27b28dfd400666730d303f5f214cf4c15b88369dc9. 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/CNM561800104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbed0800e4d29a04b371a3eb5e46788c3e64196df78a1c3ace603bd9a17f1789. 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/CNM561800099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a366687631873be1095b6b324c50ce7dcbd2661a128148ef091a9a98458f97b. 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/CNM561800098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb942d62a3637e5906e3f1b0ca8aa27c0973213e34c22bcb335e1d2fe85a9ce0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CNM561800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e567a5c6f1f81004a94fe953c58ed94223619121e5ede41b8ccb098b95d146. 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/CNM561800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0250c191fb36a8b58cddb42d405a49eb87cd4418e53d142563c318b91a31562. 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/CNM561800106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad81768925638a209890526f04f0840eb5a977e460c1832bfcb2c82ee0983e72. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CNM561800076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7263d908b3b8bc2fb5cdd8dc08d28d449eb66c00c2c47d5e9105285e416ed758. 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/CNA231802010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64c3a6cf6b2ccbbda1a68ebec4acf737eed92f3f33d3ed9ebe312b94984fa01. 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/CNA231802566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582eb9676104818615953a5ca68419e8e5703c1731dbcafd3e8de851ceb39ed8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR59R2120619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda27bd1232dcfd425b790cd405297f7480514ce03551c3e1415659cbe07aa9d2. 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/CNA231803551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117b33bed472545026baf464cf06c971d39ccf11a713ca9f06a9a0b267b1af95. 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/CNA231803548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2aba39d48148f19aac17d87a852601b0348aebc2d89b29e519ee033e652972. 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/CNA231803552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46248d9907024ac1efcdc794e181693f057b1910650dfd803605eb527a7d7a3. 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/CNA231803549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca43ef3453914683002ffa96c174171331333e447fb843e3c35d1a4eda06999. 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/CNA231803608.