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 0x56ec9aaa41a7727fb9ebd531189db23b2a191abbb1dd26f8673ece6889796bd6. 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/014c40f8-af60-471b-b70e-00304ebb3081.json and https://artists.proofprofile.net/proofs/artist/014c40f8-af60-471b-b70e-00304ebb3081.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 0x8d6939599e7e0e187d5909ceefe7b8506d2f05456ea29016764e075045d6b224. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTB52234864.
Can't Get You Out Of My Head (Hardstyle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cd6e9210da4828331c8e433977d33ad4176d4db3210c2cf98664a88977aec7. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:36:52Z), 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/DEUD42572438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd833658c8db1899df52cd6f331a8e00e766f2b708332a0a08712a28ea4283c. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAGU2396678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92de23ed66352f669f5dcdca38572f5c553106437e4734a7ad2ed3fcf748ee03. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZPEW2404989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4b959a701c27c0addedce235a9996f38c9f8d2e67d269ff33e371aee7e49ba. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAGZ2373971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cfdb76853a85c588f9dc6c1ce71df3fb781daf3db3450aad6d3836fe45b53f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:29:25Z), 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/QZK6H2328295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe765852ad7c6e8ebdb3aea6c6e7f9a921c32104d4ae382d5480c93a4445936fd. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAIE2493250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d401e600ec763b0fd00939a956f72d6e97e840f124ba34f7f6af78791c47d2. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/TCAIG2410657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e35ced059ff011a98997b8838848691b5c01605319a2fb4487432887a6b2df. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZNJV2481859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd936c2189112bf9e4c15263a399a309e63dfe3b607872438d9c85b10ccd14799. 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/QZNJY2407884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87a9eb1ad7db0ff64eda83e97fc3bccd3275f15116af68fc012c72ff7d88ba3. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZNWT2309371.