Deux means "two" in French, and D'eux means "of them" or "about them" in French. 2, the natural number following 1 and preceding 3 2 (disambiguation) Folie à deux, a rare psychiatric syndrome Ge
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 0xaa9f554f745cbfc34abee364f866e59b8a4589787777c36709db9dd6ae2ccb29. 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/53d5bc53-e994-49da-b0ef-1ad8ecd80c2b.json and https://artists.proofprofile.net/proofs/artist/53d5bc53-e994-49da-b0ef-1ad8ecd80c2b.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 0x8122e31adf44c973ab36b121b9a17c0b33b6c9903c221a311b416f548877fb90. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/KRD451800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fa87acfeb884ea18130b377189ddc0814d35e8ac056abb49cde4a626451655. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:33:40Z), 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/KRD451802440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800ecad497e15c3d33e06b51dc416bafa6530198aeccb450ba35286234583ed0. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:46:58Z), 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/KRA340910614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81eebe625ceddc948d8b015092262388fc00bb769623f85f19cd072133b85d36. 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/KRD451800099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70cb03a10307cad58102c8be407343b466555b0c48eab57191b7bd0e3039722. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/KRD451800100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfa43d80dee98c7551c922660f529cdf79fa781fd1aa2e826c23996234e1e2f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/KRD451800111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c6f6f93c75098b4ad6374af989d1feaa3ac307a02a2dc654dc2e4f4469bd7b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/KRD451800116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6d90abd87bfa3cbfe82f9d3c953a7125f2e32bd58df649a7ed25531e0d83d2. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:19:55Z), 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/KRD451800123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800ecad497e15c3d33e06b51dc416bafa6530198aeccb450ba35286234583ed0. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:22:42Z), 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/KRA340910614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600cccc5748a698d4c493defe0ae66ba0bba1f23aa95593a768c95e7f6f994b0. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/KRA341203590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe615ac7e5d80e63a0f752e6ad705c400789f9f30ccaa9ea00330deb3e8524eb0. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/KRA340910620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd862e35a993f75c1a130a7dd637d3f3d478ee1bae16356d0ebe215bfb6c0c19f. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:39:42Z), 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/KRA341203594.
S.M.K 첫번째 (올여름 가까이 두고 사귀어야할 친구) - 여름 안에서
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39e03dc6903ddd2b1187b64df1da50fbb0507059f8c4ccf1a87a320167cab41. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:35:52Z), 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/ZZA0P2309583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9249bfee8095a0b686a1bbbc2b4b15db0829f684f8e7e81401a16d81ed177247. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZZA0P2309418.