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 0x0331318c05095e97e2ad7d5fef78ee8934a8b000d588713a015450b540eff2a2. 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/725baf09-1508-4141-b4fb-2a2719d4eb7e.json and https://artists.proofprofile.net/proofs/artist/725baf09-1508-4141-b4fb-2a2719d4eb7e.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 0x103c7cc93f9bca98ad60254aa4ba4a19d996d3059c1da4fbc9bbd133244b62e5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ITM030400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438e4f17cd5423e98ec2309118547075c455002294a8a49b8567c23499a9d69a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITM030400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba16f51dd3dc987600e4c2fc693873fd258a03edb3bb23404a3b8b64bf971be. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/ITM030400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d2db00a9a1103ffdeb136dd209dbb95d5e76a8a8d9689d458b989cf7a452cf. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/ITM030400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf988a85073b14efce02b94de527606109baf0fb8e33183f761f78502080405a. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/ITM030400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd1db1dc2523d4c217793004e5abec80f681be4cc7dfd8726d17c0c80c0372d. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/ITM030400112.
Cristallo Resort & Spa - 120 Years of Music
Cristallo Resort & Spa (120 Years of Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654c703cb7dc178525acb0a9f73959f5011d9ac54e541ae95f11bdbb9b1ad4eb. 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/ITJ872100642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0359888fc704cd6559a3343d1c21ef25ee4b6816ffb93e8efcdd8d1df9fd360f. 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/ITJ872100646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322853c20a1dc22a13a7621c1c13daa007c31a6ec5743a3393484a4fbb0fd434. 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/ITJ872100647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d440bbfb2b2eed9da00734e3e1ad23136fd6d376c1b1337a5ef84ed1207bc6d. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/ITJ872100649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd764881240970d6085a4c34c5926c5a1c4a4798840e16e42926dd8836033b522. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ITJ872100650.
A Little Party Never Killed Nobody (Anni 2010)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec4eff58931409c92d608fede8fb56a08c48a97e69ad39c3db801c43bfb17c6. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/ITJ872100651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed8aec18ccd7ab3b3cc1dd8efa16a7918388049b0a64f8549c3988544c681f3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ITJ872100652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041e32aecfbe5f64b9160248cd5601e00222b871f516226602b11bb43d5a5e59. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/ITJ872100661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d9b57bed20e768312d52bb13b60489ca08176e3a3a63984cd2ef6d475aec20. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/ITJ872100663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51ab5aaf0d3e08aae31df84570a8995dd74e383a462f5f97b3db928c680bd76. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/ITJ872100664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf597568c9b4ee4df915217cc06bd96e72ba1ff865e9e5097e8ba054e76088f98. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/ITJ872100666.
50 Lounge Bar Grooves, Vol. 2 (The Best International Chillout for Your Relaxing Cafè)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1620fee2afb2c8abd1f629eb833b51845e20c8fb103ed824aa8a692f49202b09. 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/FR6V80493133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cd4d490a971a5d1529f79f8b0a164d39c8111b418dd532d1b56ddec7bd92ef. 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/FR6V80493147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063192a590d9e2c26f86a2c57f147a1627b4534738167d03a109502a197d2213. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR6V80493145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35df3e7c52483f5b45e8bddd04ae205323bf107c6afc445cf6e72d4b1b43167. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITSW41700001.
W I Tormentoni (50 Top Summer Hits Party)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9702b471b31c8678bad19320f6ccbe012c65b1b31534c2df8b1b998b106ffce. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/FR6V80126909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1578db327a9ccf09b1b86ed46c854aa71b011ebba2fc430f02d9213851e1e323. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITD540800759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d0efcf9cfe2da266c215ac756a99a7f96323d1d088087494acb4f446302bc4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITJ871900319.