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 0xb92fe73239ec7e52dc132f0d0b457c4d86f34be8d574a8a540b068a51bbfe558. 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/344b08ee-0d59-41b5-8e3e-0bab5fd0f9d4.json and https://artists.proofprofile.net/proofs/artist/344b08ee-0d59-41b5-8e3e-0bab5fd0f9d4.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 0xd24403746391575f7a6f34db175e844623becfc57686d01418b0626459c773c2. 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/QM24S1927450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24403746391575f7a6f34db175e844623becfc57686d01418b0626459c773c2. 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/QM24S1927450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccef40212ebcb2d83ce2f883f05ab9492a858f93376036a86c05f9df170db2fb. 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/NL1LE2102015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fac70e94c1118f7e86ff5937dd53f9cdae9fed268e0e1e72bdd6a6f909a6ca. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NL1LE2102012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e94b742ca82ce6e601daf88ee1ab0ef1edb919346dc66271ebb7f285560045. 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/GBKQU2291571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635efec31ded300b9b8e137a4fe8f39eb2efd060f91197d2847ece7c45325eaf. 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/GBKQU2291572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b85acfcc2de77b01ecdbaff0489268b5402969c0ebf7678a51041fbc29f206. 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/GBKQU2291573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6357f6ae5a14048fbf196f9ceeefafdb41d30d76e49861ad0844d5916f10f03. 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/GBKQU2291574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb63df388768f87ccdab0d0a58b60469a085f6994947b56640354bd3d81b2b7. 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/GBKQU2291575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23e251ddfc1c070cd0fc65bc6de666d84b3e3f97319022a6d965c6b19ed373f. 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/SE6I32356734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83903d2a8ebcf6fa5b0c51a4e3db4d42631c41ab6211a17826f16c4c56f56b0. 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/USANG2416835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2629d47a32e4a27c30bd314eaf9cab0d8e7108b89977ee15bab6ef9e285332. 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/USANG2434860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e6fcc5f7c85456d378160cbf19978fee02587e640887297375ae58ca979fb1. 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/NL4YD2200118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263e6399859d3909ac5baa84340578f93ae51ea84845a318a12c55a0d5254c43. 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/GBKQU2182845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4ea74dc10ecdb6244e761291724a4adef6eee90f747930677e6726558accc3. 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/GBKQU2182848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ca571fcc67d2ab57b2472da70d2e19c9af67ad8ba164268c268527fe8e307c. 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/UKZGC2407068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd027c2c2d082b22bc8bb18f5988eebee5ceae99eb850aefc5e1a1174bfe4deea. 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/QM3DF2159435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afc35f277c3a6822af3c540be2d728922479a13abdb89adad772ad5b432e482. 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/UKZGC2309185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d9706fc8db08a38547600195b175500567453b1b323b5238102b891628974c. 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/UKZGC2309186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9760892bec41bf61f58efb333aca8b181dc8833ff7f3207669416ee83df73552. 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/UKZGC2309187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a046bc560012c8623b7bbe6178ccf99d28d925547765c266b94857e643a360. 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/UKZGC2309188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bc8ee56db60d1f4bdc31b4111e5acb143f35c29d8d869e737ccec3bd3e36cc. 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/UKZGC2309189.