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 0x3267cd2de281596368df30bac352be945a812307e175c3ca58fdc5f7aa957ea3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0970b36-de85-4401-9a60-fd95dd209e0d.json and https://artists.proofprofile.net/proofs/artist/b0970b36-de85-4401-9a60-fd95dd209e0d.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 0x560bc7968198e074a199b08b667f4c77898c4c37d48b69e1694c773760c35e2e. 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/ITUM72200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6571837bf1c0534be3fd169c7e1aba48120d553706cf048ee21a091193843e97. 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/ITM382400074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289069cb2cec3b29e876ff32e39643abb7a18e8c9ac8b55594eade25b8ad2a55. 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/ITM382400075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc32279e96dc6c9a40c3e27d3bc5dd0db7c5c4c9aa7c35ea1f8b032dcab3250. 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/ITM382400027.
Mattone (feat. Kuremino, Nerissima Serpe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3477db4e78deb9cf83665587dc2f6363e4348b5f57bd72234ea5feaa910aa7. 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/ITM382400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54cb43527f98bad91307c79fcd1167a549eef989e4e3a90f63c52d7070944cd. 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/ITM382400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda23242d5b939a73416ea6902c0bcdf830ae258dd30edd04b8d0be893a7c7053. 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/ITM382400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc090b39983d24df2398bb518ffc2cb0879af1b9fb2507ce6046417f2520710f5. 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/ITM382400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126011bd53d09de8227b17596c0542e652ecc093a5f96c932895a75cd8d5200b. 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/ITM382400078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20fced05c53baecae3afe68f72b0f976634b8c375a0719e796bea18c152f9ab. 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/ITM382400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236df7981b66056d65caa1ee78747319dfbe63a7b94d300a3657df98e5ba774e. 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/ITM382400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213e251d17af63e5e05114da3a6c40ec79dae2e7c0b4661918def827cb5d24d2. 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/ITM382300254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ed31279dd4038a60398918ed13719efc4fac03015100a1c21ad608a5e8b957. 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/ITM382400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2912efec32e4b0e50db7414891a47f27e2bb17fa60ab1c75f4f09c94ce268232. 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/ITY8R2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f089eda82720d163beac46356fe5026f4d7ab7c8004376d61c7c9c3f7dc0bc. 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/ITY8R2300028.
Mare d'Inverno (feat. ARIETE & VillaBanks)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ced7332b986e7af6252567568d0fb0a7897a40464f44df78f86a17f832dc76e. 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/ITY8R2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8931e1dc28fe567ca68b16b168b7263bd855aed5d7d55fa77021a03c55cc2cf8. 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/ITY8R2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a037ca01d7de55c35275cebe431ea71e9f2712a9c54d6e159c2b70da6a9c7b. 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/ITY8R2300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16af132e549d5a51c7b597634d99386e490f77a57cac44f1ec651373d485cbe. 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/ITY8R2300032.