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 0xb881f316890060b5df3a927c43ba4102dfdc44c767a9c2bf1365964ffadaf5bb. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41864618-bec7-4721-a5af-1ee956e5de45.json and https://artists.proofprofile.net/proofs/artist/41864618-bec7-4721-a5af-1ee956e5de45.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 0xd714e3c0690dea6d20079396b26baba0f9b6ffe1e62491b5fde490df1e44c5b3. 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/DEHY11200688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2692d5ef6d5f08e1918a507f6be5e6bbf63b84b915f1b4877f8c9bde5d0ff2. 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/DEHY11200702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f57c63d1cf610ab746bc1618a41c747b7a85baf3adf7dfaad6403123e44cb5c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEHY11200712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307be87982b1551072f5798362ec7df94dd729ba5f5caa6632a99ca1421c0046. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/DEHY11200711.
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 0x09e7ae483c6a4369c25ce6df4b8d6c6ced8c38e848fd3e507ed61e6141a60db5. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEHY11200689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee054994799c8c084b9d6057d3dd9eb9d005ca5684dba5aa6fabd5b300a56e33. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/DEHY11200713.
Trompete & Orgel (Festlich - Besinnlich)
Suite in D Major: Prelude - 'duke of Gloster's March'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1913ba097e515a08d8a646313390c0c305b46c25bd24f2c3ee5b0404b95dec4. 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/DEHY11200652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e35f92b2637d2653bbc7f3b1e426c6416e8e5c4adcdd47fe4b0ebff2164f13d. 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/DEHY11200653.
Suite in D Major: Rondeau - 'prince of Denmark's March'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dfbb48936689f18c496c3f54abc8ef1c6eaae73fb80dcfc51c6122d23df21b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEHY11200655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1000a01363a6ff78d0037a915b6de96491d033360c3b41f4efe4cd1a6ba36cc7. 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/DEHY11200656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7d3250c7568da15a1f35fe51c40b138e76d01cc7840d6decb132ba14ee5763. 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/DEHY11200661.
Musique héroique ou XII marches: I. La Majesté
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadbfeacfa95cecebc67e5485264f7dea19883eda594caf8fd97c6fae10efaa9. 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/DEHY11200675.
Musique héroique ou XII marches: II. La Grâce
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ed8486b0819a1287932bedf7c37dd0055a79d6b9e1cb0ffcb38f463b592c17. 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/DEHY11200676.
Musique héroique ou XII marches: XII. La Réjouissance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272b582264be841c1399076b8e1800b206b695bede06235379434c307340a3fe. 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/DEHY11200686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73efe860fc6c98d614f32ba445467bb81e432ca9d793b8ec41b88fe721d0b7c2. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/DEHY11200648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd43e0734d4b12b7bd6aa88058ba7ac55820b5301edb0b196c30fa19e5dbf83. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEHY11200649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8814fdc9215531e4ae93b71919309d95cd047fa0516c728687e628a86362ca11. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DEHY11200650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8426f6aafa9ba3938a745b986163b8104ba1bdfb6ed0c93ba0d1b2f8414ef0. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/DEHY11200651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b9a6f9ab5d693f19e7c1299a872329fe43e2c9bf2f783f828ed376b256cc84. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/DEHY11200654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5afcecc4f222c83811a848599fe4b4d8ba21f5237e6dbad6afd09d16706d19. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/DEHY11200659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d58ee4025514f5d98b2269b0bd1a03439253727ff0eba954e70bf52fe7d1571. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEHY11200660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2321850a9bbab4042a638c2b8e66cddc32bed35742bc0871be6a20414068f38. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEHY11200662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8fc1bdc29c0d9f5562d4ab18581cba14870592f3accb7498eddc64a18ff2ab. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEHY11200663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4362ff1df183d25655721eb2198eee667520483de807bbf2ca0c059c9c00ee. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEHY11200666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac583f149a433102c9d76665e81c2eb703648b7548c56d0e9b05e6556b8f216. 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/DEHY11200668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d08a79202970d698bc2e116453978b32d5d683cd7622964f4408e1fac9e66dd. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/DEHY11200670.