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 0x8ca47bb31a02cf773619cded1057dfb7035eae01203cfe9d24fec7d55316a647. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df6b70c5-35e5-4ef2-82f2-58809adee976.json and https://artists.proofprofile.net/proofs/artist/df6b70c5-35e5-4ef2-82f2-58809adee976.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1c65688d598e8d008a1522745b57d68ead1ade687ddf28ed8d00c6fd6f47f8. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/DEA622000091.
Broken Pieces (feat. Niqo Nuevo & Rola) [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee99de537e29b5cea40a92b9842b1d279a8713cd4a45759b2b0d463c7bbec64. 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/DEZW82200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe489af6a244e75484743cd057fa8a9993ba95cc99610a2c06d45d80b6c635b1b. 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/DEZW82200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03649ba0123dc9300ebef113528a73bbbea81e96ee63a184e7baa5a09277c5c4. 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/DEZW82200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367175dd1235b2e2735fdbc61d5e7a5b833831d9fea10ddfe278373a7339bbeb. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-21T17:33:39Z), 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/DEZW82200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9b5f0d01f9973c27e65bf56683fd5c534b09fa857577b3408e86e40aa3e2b5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEZW82200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b921252fe9f131e6fa06cdadff47f2e6be9e1a52dca7221e238a94c62a495dc. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DEZW82200015.
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 0x00f72e00111de3bff4e3187c5addfc95ef29731a354b763fe013cf6472e0ec5d. 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/DEZW82100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8c118d11e6174dc619f0f3fad9c719191f672223730252e1c54425bc663cfc. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEZW82100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf749e246f741157571cca67d87a8c5760d37f02888a2c61341a6310f855586. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEZW82100005.
N.G.F.D (Nicht gut für dich) [2024 Remaster]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ffba3bcee7460fbe0479a201a64921fc647043b629981a73be48a3bd423d79. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:52:46Z), 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/DEZC62437429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0f26a5ed4e11f930da760d2f25a17dfd3f3105e94b8c5410aaff60aa19373e. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DEZC62454433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949ca77f689181c0aee939865d684a95f356d0d691a4b505f3b269bfc5990d21. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/DEZC62573702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb2ce2fd6ddb4b8b3af0386b847dcffd1200a5d635e8666137f95ebb9cac901. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:10:46Z), 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/DEZC62505624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60f2ef3cd094f5ed1928c520296158cd3041c0f727404425ecdd53a965b9484. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEQL42300001.