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 0x1c7784d3f0870159a7bf4765c5037858bfd2d35c6b5e6e6567d3136491b1f0e9. 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/a573cd52-fac2-429e-b048-6c36595b1373.json and https://artists.proofprofile.net/proofs/artist/a573cd52-fac2-429e-b048-6c36595b1373.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 0xe82d1ac35ee964acb1cec875b9d271424c6212cceddba640da81250ae1e11389. 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/KRD112400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc9db97c8d14bdff5f7a322a333304c688206c194b19f4b386ec973b74c907f. 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/KRD112400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcb04a71e8ba9b4aefdbd7640fe8b1aa350f04002ff8f68c8f6424aaf65796e. 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/KRD112400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269dbe5dcc10035be2272b2d7a9b368b85a4f16b2ae0cd7d627f7dcf66c6aae8. 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/KRD112300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33f9b6fe82437a958746ce7d9215f982e805b01b223cc8e1031ef39eb9ced74. 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/KRD112300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119acfd80396e736e07c01fbc3d345585c891922ad04623fe780ecc0754fdc0e. 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/KRD112300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0182b1c01b6558231ef199053a0054115a01fccbb1b37f1661c5ae19d0d4934d. 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/JPS801962703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2862e9ad3d0cf87ce4f8e3b6589ca69bc2cf1a10907ba4881e1ab2b667a2bfde. 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/KRD112200034.
Stock Struck (Original Television Soundtrack), Pt.3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127f7542d32aa8b01f85ca627829b69af2e2689f30fee10c09c4d5cab489ff4f. 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/KRMIM2256822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eedff3f06e907495b3430ead1cb4a7f0c4115f3f11bbf005b3c9e736c898aad. 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/KRD112200023.
Feel Empty (WEBTOON 'Discovery of Love' X OuiOui)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6696420b833fbce41f87f2b4e723e24b75e07c8a0742dd25fc77691c7bf8161c. 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/KRA382206325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562b728741a2d10eafb11b60d7c19e1b871eaa306426b6bb89e17c6920b48300. 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/KRD112200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608e4f0cd6ecf8597faeaa2b59454bec1141718121dd37f8711060aac2458f2a. 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/KRD112200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87c1e60eaedf813bd0d3a6b171417e5d58e945c69c0a021d9362c23b8b6fbda. 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/KRD112200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb224749fcab0dff4e6d3a8637a20341cf36d34963e90ef1c9b96c4cc7208deca. 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/KRD112100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879b4fcaf9e0ae4aee0b0ee9e34dcd09206ae444c77643ae00c5e3cb66508055. 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/KRD112100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcedae89ad0f0b295c3bf3753dbf8a2ae9db07e4426a5f9fcd9cc34272d9462. 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/KRD112100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f57a770b5dd750d7b1ca41c184ac785a613aa23732efaa5caf4717d0855581. 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/KRD112100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b821e3500123418023e9db5501c727ee187411c455bc8113a63ff9360d58a71. 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/KRD112100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaff36048a7a8b3f26948d242dbfce5368bc7cf4f6b0d49a39dd683b9a7e8a96. 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/KRD112100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80276bac5ee86bdc45b425cf22a6c8e0f5ce32d87b4052ef2b48f8330d1d42c. 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/KRD112000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c80509099781728fdbf96e23948b686cabcf20421564f0ff03dec5cc4d6d4f. 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/KRD112000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61a56f1c7e830bfc1ff2c0cac3a3630a5a2df2fe7b0c8f1f4b74c4c7c01c5b6. 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/KRD112000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18abe60b6d2ab61b02332293af26f35b59b4662f568b0255e87cd1aefa7d8015. 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/KRD111900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3063b2c168ef983bc9f7c58298aa4f86329d10bf56267b63bdc3fd8332c22cd6. 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/KRB471900844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8222eb919b729a8d00275322057fa2683912c140f502496cec5e0554f2e0767c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRB471900465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbe1f554c8a3d91af04b71b36140caac6e7d56951ce1dde2ad7824b9bcc0513. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/KRB471900122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1dc2c81438e6ab6750664513bb8d4af3c92e738d2f3bf57fcff8257144c0e1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRB471801603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b36637085609ff8288df2b8e46daf4d7ace2de34e54953192213b8b20169a03. 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/KRB471801133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ee20e13d8418886599ca4977c0937b51d5cfdec85eb805391ab8c7124df8ae. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRB471800757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9884c14c523225b461417bf6e52e411a4c6608e2dd0ffffdaea9d8fab51347b0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRB471800390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5e05c043c88cb700a6aa7196b65dd1ce571453bf73766f6038f8e849984d78. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/KRB471800391.