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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b8baaf62de2313efc0c4961b8c8bcd22071df8a86a6f060f89c404d54a0877. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f13b4582-88cd-40b2-9840-6c0a9ec86578.json and https://artists.proofprofile.net/proofs/artist/f13b4582-88cd-40b2-9840-6c0a9ec86578.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6fd077c43a1af28908a8d4b31b49bf10f08f8f986112e28608982f43be1cf8. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZEKE1845269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc384154451641c02cda47eb4b59dc56c9b20c92d7e36b991138c64d9ae85c359. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/QZEKE1845270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a0ec7b43a0952a5e56b1385c269b66ae9239bef8557baea0e11e8ed1930c5d. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZEKE1845271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8299b476dd9d0e371e7bf7e1d1ded4b4605e2fb66b701ba06f94dd6509213b3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZEKE1845272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0412011bce13f5f6da399d83e5d048b1f629f18aa9ec044d91b028ba54a20ac3. 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/QZEKE1845273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35865ac6fec25d50e3d033cd98f787166e7f51bd91fa5369dcfdd7c8e829ae5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZEKE1845274.
태교를 위한 심리 안정 음악 레시피 3 - 신생아를 위한 심리 안정 음악
태교를 위한 심리 안정 음악 레시피 4 - 내 아이를 위한 달콤한 자장가
태교를 위한 심리 안정 음악 레시피 5 - 아기의 심리 안정 음악 테라피
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364b7ce6933161e6390fc9cf0ab0377e6785d92f63dfd558bf769f52eb93208a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZEKE1868999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971aef47b2b6205af467d9fb90595d57fbccd2d6a6a9d450d0641d8e353e2961. 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/QZEKE1869000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54edbf3240f2feffb175ec639f672e8e54893563be5f8e363c153c70c056170. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZEKE1869001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a30e3b2354cdff8be31a638d35fd6cbdbc16fa9ba8a5ec58aa937c1975d27e2. 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/QZEKE1869003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbe8e871372e1dad76dd7e39616f885facc7c259d90d048994f4a862454151a. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZEKE1869004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658d4863ada95fbf9d6f08fbf05e79cc9900347d64a0da19a6c39ca9bef4e778. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZEKE1869005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb998e249ad6767a6a5c83a347139355724a32c79396b569001ff6c79563ee062. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZEKE1869006.