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 0x1ac0612a530b72ac5a2c26f22a53f21d3fa783878a6a8033b261535ef154b503. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/36fc9e76-a1de-485f-a56f-8be7bf3e6318.json and https://artists.proofprofile.net/proofs/artist/36fc9e76-a1de-485f-a56f-8be7bf3e6318.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 0x192074841514640a68f15acaa6c23766eb13726df4ba90bb55bf289e9ad9f214. 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/HUMAG1700232.
Zene nélkül mit érek én? - Pappa Pia Filmzene
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c12c3ef05bfa84a78dfca75e948194931bff6fe8d4fb6d2f2b629d2c58500a2. 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/HUMAG1700233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0800960abed59df6063148e6fd4a14f877db1fd2a6b1abf2894d6d4e4091430. 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/HUMAG1700234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c824df40d896cb224d7e35e1f84c1c7b84385fb3b212493d14baa27e66f1e8. 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/HUMAG1700235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc235895894079a22c928f96f13711369ad2c5a32b1ab4b1612444da4832f4af5. 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/HUMAG1700236.
Nem leszek a játékszered - Pappa Pia Filmzene
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c071e2bf46da0fe8bb7e7132189a0f267fa3279dd70964157bd3ed0e8ca81d8. 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/HUMAG1700238.
Darabokra törted a szívem - Pappa Pia Filmzene
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070a69ef7b8969cf5eaf6f3f163c0b5aa2cd73a38c531bc51051b73ad37c1ebe. 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/HUMAG1700239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edbf8b58562edbc50bfd440e9ef6981ac3982e9d6488544cb79f38257ac2e16. 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/HUMAG1700240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f23f194c22fc48945c06bd5b3a18100cbe44c6da5ffdd4806f03869c816276e. 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/HUMAG1700241.
Hadd főzzek ma magamnak - Pappa Pia Filmzene
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb316b80d77ed503bdb1e88555c74fa8fcbb74dca6f1ac75d509ab025e1352172. 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/HUMAG1700242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd937adc55098ad0af50ebc0074f9709e56ff8cdfb7f92c62509f1977ca0b8fda. 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/HUMAG1700244.
Most kéne abbahagyni - Pappa Pia Filmzene
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc081efaee2fa423a940c4f7365e8e0c463f0b2ff22934cff3adcb82f9e6fefe. 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/HUMAG1700245.
Dunaparti csónakház - Pappa Pia Filmzene
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6a670f125b58009f8ce13d7daa6c80764ee1e47c7e8d093c25c6d686c98b4a. 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/HUMAG1700246.