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 0xa0787d9cae644f24e8ff8210d7874ea3e95bf58a7b20ce14e126e4f6f10c1830. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ebae3ac7-91be-4745-b8f1-7f8c5dd3c774.json and https://artists.proofprofile.net/proofs/artist/ebae3ac7-91be-4745-b8f1-7f8c5dd3c774.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 0xd5eabfe2b779ff5c3b68c7789f0c9a3886185d4d2bbeacbe69cad1b36151191d. 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/KRB621301116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacc2557a4442d7789ab2c6e8792fd60afdc0858850ef07d08d4d17ecd355c57. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/KRB621301120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b94f26ed3a3fd72f5c2bb83b5385a752b24de31b5fd7ac1581bea5e32e7ce1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/KRE892000003.
[Vol.59] You Hee yul's Sketchbook : 35th Voice 'Sketchbook X Kwon soon kwan'
My Dangerous Wife Pt.5 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0433967df33f3719e90f9f4c3d2255dd130ec4306114c9ba0768f302143b99. 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/KSA002100603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81c71659f26d1ce8f1a7c9f970d19ff3105fe1d84c91d972f638d711065679e. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/KSA002100604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2861dce061bc359f0e31a85df0172ed093208c3a105bbcb13444cd52b72ca3fe. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:52:05Z), 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/KSA002201304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1e766bc8e54218c8bba586b8ef25b06d2dbb3c22e06f98b8ed3cfa59cc5f80. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/KRE892500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7d209e7bb2be3739d2a48e9722a34c15492b9be52929d218a6a3b957e22e64. 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/KRE892500020.