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 0xea170244946595d9f3289338ec902498725d9cc05e9f4e22e66f6da6c23b036b. 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/d1307196-8043-4d38-ab74-cbb4c78d888e.json and https://artists.proofprofile.net/proofs/artist/d1307196-8043-4d38-ab74-cbb4c78d888e.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 0x228980e12710a667f19339694660de28e1443cdcf8f160c980ee6684a24a1804. 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/ITM161001719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ea15786cc0bd494437e2e2868954b290543e7d9c1d7033db202c25550b28ce. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:27:50Z), 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/ITM161001720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f024358d2198ee7f5a32c11c91ee7c38ee83e054ebd6111b4d2e93a34202945. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ITM161001721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f482241954b2b01a9e8d0855788dc21599500528791ac3b4c164fbfb1ea431. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/ITM161001727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fad1effb2b1974f5dd0a6d0b376cc1fbf450bd5144917d1265ea18dcb847f8c. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:07:18Z), 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/ITM161001722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1477c2900da7a47a2f3de2ff8f60935a50e4dd8bfb60a04df0a0cd876b69eaa. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/ITM161001726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a961d1ec88f1c449b5db99401b914c3329dc223c1793e970075dafb09963a05. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/ITM161001728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34198f446e109c6965fdf2b814b38cbc2ab45a5278d98b82d11084f9f8420a94. 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/ITM161001730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990629c8c249548e539b6abaf046ceb6b3d08d88177fbb162b9e674ff2097469. 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/ITM161001731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac933f29d40cb13e590d4ef6c7f1f76a9caff095286d1bc98164e3b8df1af4d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:07:34Z), 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/ITM161001733.
N'oublie pas (feat. Livia Collins, Giovanna Famulari & Ruggero Brunetti)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1975bb3d3dc24c4a785a704985e0f29003e90b149208c84055ebc2f2176ef6. 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/USCGJ1513915.