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 0x4add32dbe80cdc7abb3a730d3bb3ea4d17fad39e406d8e367ce92cef564fc53e. 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/21510e8f-dc37-43b2-a779-29adf35d1666.json and https://artists.proofprofile.net/proofs/artist/21510e8f-dc37-43b2-a779-29adf35d1666.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 0x86d1a2afd74fac4984fbdf8a1cfa2ae4434cd1e9ebe585bff51e1155b06581cc. 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/GRSTY2201534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d5b9ba96e8ba0495f1fd4e8ff0e61e14df159dcb20113573e0260b9046ab04. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GRSTY2201550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc7ab6d305067f6261ad2b7014f865800e329e6202aadc64efff3d8a4929fd1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GRSTY2201509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13ade742f80309cb99a3e98031ba34d2a01b9d37b95b56a41e2a22dbe83ce02. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GRSTY2201510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1989419a60d0e09c28aa43fc586d2cafa1d33eaa740bc3a83f597a5b7cc4228d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:25:42Z), 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/GRSTY2201512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69db8f138d7d6d377a6f23f9323e6450006d2c50adc1d058a0d761aa7b13a92c. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GRSTY2201513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245af43dba4851bb4c97bb6b5059148a2bbaafaeebd9cfa8f8e11a805d16471b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GRSTY2201459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63455f1407d03c6b3d179fb9dc951739d793bd6fcb1c786b7ae0261d6b9eb80. 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/GRSTY2201460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3a57e540a7dac431709a59d12534e9bbfe44dd1009d4591d631b9b86ba6290. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:51:01Z), 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/GRSTY2201461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479b929da423ac5abe01d152bfa1f281fcf3b1578ce757ea88168b8cf1f31480. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GRSTY2201463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7213aa73b04449ae8fb6495074c4cffd5881e44ae9ef7bd210968a69bb71cab8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GRSTY2201464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43c6f25fb0edf39829e06440a03738a6c403182ff8bee09b7d293ede8211316. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GRSTY2201466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bb3d08696bbbc16c448b4f8346d62842ece99891ca29d0fe6ecb2ef5fff3d7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GRSTY2201501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70fd14ccccca8ea9710f531aede3fa9edbaf34775909a56c89ef2725869fe9a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM7282049789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b35b32137562e91447acf7b8a1b8011a48a8d1a1a68d39bdacfbffe4617271. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:23:55Z), 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/GRSTY2101748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddf026ea2caaa665c323e72fa55237d09d256b34170e9335619d124655495bf. 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/GRSTY2200042.