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 0x0c5c35d72babc5b236f9b1640d9bff20e0b201662215e416b28458e2f8e747d4. 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/b89ba702-ac92-4375-bc56-0f9f4029269d.json and https://artists.proofprofile.net/proofs/artist/b89ba702-ac92-4375-bc56-0f9f4029269d.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 0x4ea0705517eb421cfbe1e0e3af91d05749a8124704d636937e26753d3c85dd17. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/MYEM17500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931fc7ed59d63c4654e43b09ba6f5505ce82b87cbdb43c367241d2d397f4ee0e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:08:48Z), 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/MYUM72100420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c39eccba6a37e81607d08b5fe7f4df9685a18b5362546da8c2887e64cc71a1. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:52:18Z), 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/MYEM17600029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6373b1002e4a3a304ea07fd6ad5c5627b9076dfc70b32a7373a5ab1ca24dce. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/MYEM17600028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03a250ec174091de54a3761ed483ba825d34610358d4c07f5c8f75c304e17dd. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/MYEM17900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9a794f69ffdb4270f8b5abf1fdd542ab0a3789ad90051db09de336853d670b. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/MYEM18100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37666eb9450d9161d7c3c56336a8fe3e5a94b951a5a705b0374e5218801a7ce2. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:57:19Z), 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/MYEM17500003.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc230127e482e08a8ba75574ae309a6b9fe02e2d8ae7a88702465954e1b1dad12. 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/MYEM17700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc230127e482e08a8ba75574ae309a6b9fe02e2d8ae7a88702465954e1b1dad12. 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/MYEM17700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc230127e482e08a8ba75574ae309a6b9fe02e2d8ae7a88702465954e1b1dad12. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MYEM17700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc230127e482e08a8ba75574ae309a6b9fe02e2d8ae7a88702465954e1b1dad12. 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/MYEM17700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc230127e482e08a8ba75574ae309a6b9fe02e2d8ae7a88702465954e1b1dad12. 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/MYEM17700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb4110fe98d5a67eb2402142e6e254d256c3f0bcad0189de99b6909e297c470. 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/MYEM17700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc230127e482e08a8ba75574ae309a6b9fe02e2d8ae7a88702465954e1b1dad12. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/MYEM17700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb070b2bb43fd66639294d42ebde8f23c91d3c4dab4b60b8a9d7fe2d3a1b59537. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/MYUM71700080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb4110fe98d5a67eb2402142e6e254d256c3f0bcad0189de99b6909e297c470. 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/MYEM17700005.