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 0xd10ce4cc9266365994aa4f943b570e6278633a750c92f7f6027c9ba15f81fdee. 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/b12fc005-cc1b-4801-b249-92b04bf866f6.json and https://artists.proofprofile.net/proofs/artist/b12fc005-cc1b-4801-b249-92b04bf866f6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
파닥파닥 (Original Motion Picture Soundtrack)
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 0xd16cddfc967f13de71a822ff03ccbfdec536b345c28e0fd2bc7a6f6ae37c2643. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/KSA012174701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fc39c7385b5001c72236924ebadc42f9a4fb944dbaeb7ec80cc3e6a85a3d06. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/KSA012174704.
파닥파닥(Original Motion Picture Soundtrack)- PADAK WILD
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851777e4e7301f02a2f9205d9f3fa5de4bf823400d0acb2effdd0a7c05ac86a9. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/KSA012241588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c5f2cc8603505bced93b964f2ae24f135f1f12b5330dedb76ec4b8b3f29a58. 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/KSA012241590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbda96961e93cbcabffbab98ca5da627e9d4efb04435a5ab936848db88743d9. 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/KSA012241591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b70f78fd35f1a027a2612deb2dde668cd100678cc0c9e83fe1ebe65231fa66. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/KSA012241592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56d55bb4f8a848db5bb8350e58ac57121377e5ee8a135c7ef2cbc1275f8ff35. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/KSA012241593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531371cc421c7ea6b1e752f3d05500c452050d49018135c4c0e0fa7bb9380d24. 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/KSA012241594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0b3384973a7c61f49e55646c8980d6b2dbbc864a5d55866a7f0b512e0d9cbf. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/KSA012241595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bc011210c5c45c53f018d72c0691a343468481b9e86f7db11be6791d219a88. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/KSA012286927.