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 0x196b79b22fb31f16ed92432ef52af5b25095033b71bd22db62fad660a3b66a90. 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/454a31c7-995d-4d7a-86ee-4b133b1d778b.json and https://artists.proofprofile.net/proofs/artist/454a31c7-995d-4d7a-86ee-4b133b1d778b.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 0xa0809914d2c21dee08d9bee651db858ea2de17acf322dd7e1fc6622bc8be6d6c. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLF711901492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6536c35c2b726c484805713a40ad5391701543a5b25f5193ccd3b8f304ee27c4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLF711901491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08e8265d11558be5db651dcd25ff32cc2675454ba396283646abe8971754995. 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/NLD682400983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dba2fac1343e8eb4280b035f2a377363c25ede105eb9108afd199015d89900. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLD682400982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5596c8d30dd53d30868af65ee13b206e2dc74014925b9a8515680587c7ef9a. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/NLD682104621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b69c02044cb1105a5d5595fc9fcaf7605611a137894002895f5688400e62e6e. 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/NLF712009370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b5bd0c16d2c32965fbf6c570905414a98896a1e820af9124ecb53ad81d6b7c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NLF712009371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4cb0827da2689f94ad5ef2d0e5156434b1404fe3dea8e687c4192856a16af5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLF711808726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d73926b4724356243ce7b2ca307b120c9eaf4dc0933fc799da7d54410177fc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLF711900356.
Run To You - Giuseppe Ottaviani Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753eb5588c6ba808c85783f012bc02201a9d7dad9aefa83f110628871263d740. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLF711900357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4ec7c5fc8581d89d7280f4c2ca3a4f5b5a175d8ad6b256534830a717a7c9f8. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLF711808699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb875cede202088b44bc58fcac3264928403cc831ddafe35b7b0e8ad776bd1724. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLF711803397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce1dd41fc53fe6c558134107ed4078d6912ab1fd00d6aad41974255ef8e96a9. 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/NLF711803398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd340c2baca4e7509cc91ce9edbb8fcd4ab308e8dddc96027f02db98186d58f32. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/UKHYL1700047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc536bdd21cd822e749a678135eb772b7fd54e20455db8df5c83fccb93d54abe0. 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/NLF711702150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b780e12e747f318cb84d6df69c86a81c83d252f812934d213f862bd035f8bd4. 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/NLF711700106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886228157d8cc0887fc46e29bd060e3aa83bff0e2882e2761bd744b1ed85aa90. 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/GBKQU1156245.