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 0x7a45da1751d30d746fce0321e4da4a7e1f2c725258b4a82f17eedb41fa4030c3. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c1b1bd62-f4c1-4806-8480-a782ba0421d1.json and https://artists.proofprofile.net/proofs/artist/c1b1bd62-f4c1-4806-8480-a782ba0421d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
고양이를 위한 휴식, 자장가 피아노 음악 (반려동물 테라피, 강아지 숙면, 분리불안 해소, 고양이 숙면, 피아노)
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 0xdf3beef964b3ebe0dca9b81f760457b61916e86c7f7330f66661280e224cc2cf. 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/KRZ291832558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d3bf614069fd24541df79d2b9e7d985e85c37aa6633dac2e53884ff7865f73. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/KRZ291832561.
고양이를 위한 휴식, 자장가 피아노 음악 (반려동물 테라피, 강아지 숙면, 분리불안 해소, 고양이 숙면, 피아노) Vol.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7e1c059a2cd8aa6bc3159265d8ad3115343fdeadbb0a9dca973873f6d5bdae. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/KRZ291913669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ecd152d355c9a0a54357f424197af9439a7c722651accf2c0be759a4a2f842. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/KRZ291913670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9595baddc992cec4703433eca759592253c1411ecc3dc5546842dc663ec2914b. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/KRZ291913671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb75aeefdbfcaebe04f3c1e0b9f9d396514bceb71709867070009533dbb0eb5b. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/KRZ291913672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5145c536fb314e01781217e86e8d344bac5101b007347bcf37f7c11efbbc23da. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/KRZ291913673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbabacecb19a1f9664e6bc9515c8f2dbde28853e573893cbd7cd05e607b2581. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/KRZ291913675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f10eab58a83aba47f8e8b35430e0dd61422adde5880111acb5da13054bdc299. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/KRZ291913676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aec4835026a85b0c9f0b925439f1768e3f0eccf44ee556fd16941b40bd1ace2. 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/KRZ291913677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc94369cced300b7447fb10f4885b577484d2886410a97d132ef4e2611fe3d6. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/KRZ291913678.