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 0x231195c0bc229bdb3abea3e4a663bbf433ddca9ff015d38db76ab0869e27078a. 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/0850add2-d2c5-4c8d-92bc-e8f540b5f6de.json and https://artists.proofprofile.net/proofs/artist/0850add2-d2c5-4c8d-92bc-e8f540b5f6de.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 0x00199499e9426b06a72da9cc9322488fc6313aab41a15250d4274fc639bd1ba2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GRS010400405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d5205a30aceb0703844861d2973d417456da1441c24b3face6bdcae133dc7d. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/GRS010400410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665eec63ef0ae8b8ff8f8850e116476396da3e4f165cae1e150c8b5037b8e8d8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GRS010400412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe330a803a31fc20353d131c8a7f116b436f310fdf323d17f6e0316e73dd82cc5. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GRE010600764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1329ca8d49e9c9013c699cd4ed88b759f769fee244b36108632fafea28e92738. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/GRE010600767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a0dcf3e3a871e7f455425c86d3a7d0af3dad021a4c5360a4899ac889610efc. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GRE010700468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574c95f1f60b1909ad9c8ba874b51839c9cab6cad6f9e93b40c44e0753a64780. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GRE010800317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eed09782557afc297923939366df7216843a98ba099760d379a48886ce55f3b. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GRPH11200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd881b70ff93928ed068d112268eb26f9cb66225a3e956c5fd5de1baa7f64efcb. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/GRPH11300310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9ff7181f0995958d0ed7f680c9807313b15403a0c991eaa36bffeb28fdf9b0. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/GRPH11400373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c72ca1d1ede0f9a5c1ff160c696004ef19661ef333202fb3a4378df88937e6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GRPH11500381.
Pote Voudas Pote Koudas (Valentino 2K17 Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3caf9887cfcd8dd96114209ccc29a601f978a27635ef25191fbb0e967208c981. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GRHV12200416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3138705eac9850613074b68d2ca04ab1e73c306126aa6d1175f7b81dac77f376. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GRHV12400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb80c68e1d07199e0775a1300a366565e78ad872bc490b92124bd2ca8d4e42a. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/GRHV12400500.
Tha Meinei Mistiko (Andreas Asimakopoulos Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c3f35dcac7b32c31830a4265724c79e6371e7149db464cc61801d69ac2642e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/AUXL32300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c32e59377f568864fe781364720156cbe8647c510db930e125fbe6dfacec9d2. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/AUXL32100314.