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 0xc1255ed31bdc8168a1e1b3a1ebc9fd26a6c635753a96f3eaa103b59ccfdb8a8e. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d897f30e-9a14-4c09-95a9-c22a2a6cb3a9.json and https://artists.proofprofile.net/proofs/artist/d897f30e-9a14-4c09-95a9-c22a2a6cb3a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Martin Guerre (Original London Cast Recording)
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 0xb534af15676cdbef49dda559e5210b6f9988723e8256177aa3baea0e05c23591. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBBKB9525903.
Jesus Christ Superstar (2000 New Cast Soundtrack Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e370285727e96d941a0b24fa593755f1a619984f5b17cd8b51e0aa88896bcaa. 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/USLIC0700278.
What's The Buzz? / Strange Thing, Mystifying
New Cast of Jesus Christ Superstar (2000)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f3579cf44d519a190ccaacc41bafc0a03c822d284bca8c1d1255871e123918. 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/USILC0700279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6184e4e506f85c4c881a0f8eb1d732dfe438055a56c78a4cf805d65f4549fd. 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/USLIC0700286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0be1a7d91f4e4c4bfe53e4c751fe0e9e56dc7e6ae3f7cf6cf8647032b28383f. 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/USLIC0700290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e6d932397ea77b3508b50f5d0277bdd4a3352e31e3aa66cadc16c4d3b78ed7. 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/USLIC0700292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b14080145b182e35d9ba7f7a113e1c7d52e8cb2126200fa0553e8a0a286ae8d. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/GBBKB9525902.
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 0x59783c15f9857bb8f3e65597df991a603d421e28155fa05c515e3d743b1dea95. 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/GBBKB9525908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91056b721f603f772c52e71de957a72dcf2b818b4af38857dd8918c9177234e. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBBKB9525913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8933826fc39465b08ee56d25b0971c07a287af80fd7db4fbb18fdcf5c3f9c6. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/GBBKB9525917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fb2e1caded80998c18a03634970c9917da0a3deb02aa55e1eb31ff5428075b. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GBBKB9525918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f2398e775b6296d17962bd2a74966325c273131802c6fe7d5c953d3ef42867. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/GBBKB9525919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14fdd040a3b4c5bbb3feb0ab357f21ba5eaa409be1b3f3cb3c9cedf147b0a2a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBBKB9525921.
Pirates: Le destin d'Evan Kingsley (Bande originale du spectacle des frerès Safa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fa7e307a1b729fe178b26d475b7d0cc6d93d25045394d85677049c053a9f32. 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/FR9W12028282.