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 0x7104fdf0b81065fe93d2dfb1a29a8426afa812e6ce202ab1ce5ca62698634a32. 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/a03f31e0-ef50-4ed0-ba0f-4c4c5483300c.json and https://artists.proofprofile.net/proofs/artist/a03f31e0-ef50-4ed0-ba0f-4c4c5483300c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Emilia Pérez (Original Motion Picture Soundtrack)
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 0x5c93157d28d60c0874a7db8746fbc4a85d42969dd7fcf98119d348ad444c5ebe. 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/FR9U72400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb129e7508f38171692da271f6791655e13c504551cd2ea0c6024acd8bc1a2f9c. 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/FR9U72400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fe983ecdd8809d390da21d00eb865540a89c6f0ea631e191c954f872048b3d. 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/FR9U72400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe9a4fa8f7182954f7b9a264f753913f0cb2d5d7eccdb8576863aac0429b881. 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/FR9U72400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c822775aa7e8336434bf69db8d68ccf5d987569a18c40aa76e1d0a1272d3139. 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/FR9U72400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92fbc363256a6b61a55aedc29c68278b3159388789891204da60d0245a2a1b0. 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/FR9U72400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9835b8a570c63c9acc328ba0a99c3b3a5fd66027056e2c828f5bea6fc5bc4cc. 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/FR9U72400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347f7f193e77b0453c117c34e26fe6050d85c8abe3c24b2de6b1a442223f2bc0. 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/FR9U72400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb4cd662947ed9f2c1620fc0d3e140305413f93b36e1815bdde162a42fa5b81. 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/FR9U72400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4bd88deb5d785b29064c3161c672b99dbfcc8b662146b156a9f79048e70bce. 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/FR9U72400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b834ced271beb281560628dc6fded7d30a8ad61644e25cd6a79b7729d1f959. 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/FR9U72400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df4906df701630610571e884936ffcab860b74453ee323eabeb3c3760871388. 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/FR9U72400041.
Emilia Pérez (Selections from the Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c822775aa7e8336434bf69db8d68ccf5d987569a18c40aa76e1d0a1272d3139. 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/FR9U72400002.