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 0xcd2a390969be1421c384e130ab3ebb90d0f565afdd6706eb0770ce6a2d184304. 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/780fa2fc-5c9a-4f8a-886f-46092fb59f48.json and https://artists.proofprofile.net/proofs/artist/780fa2fc-5c9a-4f8a-886f-46092fb59f48.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 0x496da80e0ad213c76962154bfcb4f11361b95765cd25f2a9d68f64371f70ca7d. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/JPX972302000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2f22530e4f7fc08c227eff7fd2805df780b266ffa0445260311e14cf04fe87. 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/JPX972302023.
D.LEAGUE 23 -24 SEASON - TEAM SELECTION (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d3e21c00eb66112719302d76515d675600ad49d5f54166ce27663a2cbb98bb. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/TCJPQ2290393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6784b0f288bcf5ad62b0969c6a219939f1f9b2cf67fb2c79c6656645eef8fd92. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/TCJPW2332213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fefd18749aaf423793c80349d17267b2a00c1fc0ab81c1546bd76c2717fd3f4. 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/QZTBA2337714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996b5b43df0810ab1a910d5033b5bd394ed3ad7e5d17d2def8a01e7f0ea660ed. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/QZTBA2337715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6593e904f34e59438582937fd9125e175926c7559c7f45085dd59a1b628450a3. 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/QZTBA2337716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a05c82a6ea02abbd99f0bec0be4b6c910f55e941f7eb77643f065a81845793. 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/QZTBA2337717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd7139a6de54b05378966ae041e63f86887197e82d7af039ea4c70920e5f0e9. 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/QZTBA2337718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39aa62f7473db5b68aa47e75cf7a0eb08683ef6087efc1ec0ea2ee94f55ecdb6. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZTBA2337719.
FREE MY BROTHER (feat. Akira Jun, Vega KfK, Miyabi, Yatt & JETG) [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317bf66d4cfe325f6fb9c524252e3a27629acc7b95d19d0aaabe7a4d84dc4306. 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/TCJPU2392061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5238490a1c6565c9ec1e78f0450ad40202f8e78a3ac24cb91ded8e8b63722843. 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/QZTAU2285038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ca31a9fe2008fa18106d8fd23812fb96dcd11bb26988ca3f42cf4018b6f7d7. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/TCJPA2489769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe185b4e5f52ae20babc07d5a87081e1d3175447994b3725d4bf5d7a54f2476f3. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/TCJPA2452551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2745a741db90d0f3ceefb79b38d3e1bc492508d00dd915468f16651de52af25d. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/TCJPA2453145.
D.LEAGUE 23 -24 SEASON - ROUND SELECTION - ROUND.14