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 0x26df2f18308f14c05a60e8f477dbad4952f73fa5b581997dfc26742d41fbd312. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f404c7e8-149d-4a7f-a967-d2ef3ac723d5.json and https://artists.proofprofile.net/proofs/artist/f404c7e8-149d-4a7f-a967-d2ef3ac723d5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Anymore (Original Soundtrack from the Webtoon Fight For My Way)
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 0xfa52e20e85582dd154109109fd14b80d87af8b555050ec3522040c58851b228a. 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/KRA382204490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a2d813a0764066f501c137e2719dbed7cb953de51c333721e7b4ec1c21f23f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KRA252301511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c770856a08564c076297d44fd9f769daeb9f845832983ccdac988f8974bc04. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/KRA252400728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5133d5f7dabf0e6db4f6423a319a00cf818524e379280891da2da610b0513c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/KRA252200510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea6ab673ab1a43c8b4dc897e4d84c8efa546731de96e891654a1a16512f9d07. 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/KRA252401099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf309ae05802ba62cad8039f058673334fe39cb9f3635a0a1aa92e80c0dbd5f29. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRA252401100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b8a9af72ad5547809e920a386c7d14caf21c20d361f2707e3f7f3ca1d58cbd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/KRA252401101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cff6a669d87d6da58ebc699cf928adc230de92082c279948358b675e85ed88c. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/KRA252401103.
Visty (Feat. Wutan, Hwaji, Deepflow, Don Mills, Rohann, QM, Big One, Nucksal, Odee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398bf854b7d98797ad54e2954b856d7eb2d002d0066f7c58de0a9ced4177804f. 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/KRMIM2444262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29dc0cf02c386ad01a6682a430af7fea6a408bffd2c3520e4a6acc3a7128e9ee. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KRE502000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34216e23be25e92f861e95041b3441767825b3a84cfe1301a7ca40764702f6a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/KRE132000134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371a8e5b1b417994d687dedecc66d1f4d928bdc3aafba161cf59566651adcb52. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KRA252301983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862b92aa625bc6eb72d0350d6019724aded676df38793416b150c8048187de6f. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/KRA252401102.
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 0x1add2b7e3eb8c61ce0526afade8c9ee9743a4c32875f1a88f596f32403d94af2. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QMFME2195410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91555ec5d38609957df75a06304c65b31d630db77cb156d07b0b9e0319d430e1. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/KRMIM2101229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe092a3625054e7a707f06930f7c9f4fca39f199484dec7516c882bc35afdafbb. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/KRMIM2214153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b06ccd668526f6210a2ee551445fac0bb02ac3f71cd33afb473219491d8c4a. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/KRF632407081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec07e7f1663c216f782bd8196f597c232751a7eb4742450829a656333f129311. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/KRA252300019.