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 0x53f2c67e578fce94ed1968d2d86e3935339b45de85e84082277d81cbb5404b16. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b21b9f23-a67a-44c5-8c10-80693e90a3f5.json and https://artists.proofprofile.net/proofs/artist/b21b9f23-a67a-44c5-8c10-80693e90a3f5.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 0x918855bf1d050570577e96768ba2410ffdfeb7acb11f3950e616accaa76c6005. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZ5FN2204730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7d0e7709af5b73672c7ed14aa1b5a20615c43861d896482b105440b26973cf. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/QZ5FN2204732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8eda39928954a8f99f56129ba95b7eb6561815a5589cfb2f203690cf9ec0e96. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZ5FN2204733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc06f8926c4b80c09943896e21ffb131d69a9612b171bcaa9374ccc4302afa5. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZ5FN2204734.
The Song From Moulin Rouge (Where Is Your Heart)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b6077cb607a02dcfa5da55fef54a10a6a0814e2fd875c61d0b722263690b72. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZ5FN2204735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07148a1428b6d8cbb4e40b0c66681330ae739b00e474941f908d14f3081ccd8c. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZ5FN2204740.
Stranger On The Shore (Instrumental Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a31e45e35a973994c03858471c07eb62d4634261e4080582d3b3ce9bb63dd10. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZ5FN2204744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3037c06c3bbfb5cff4ff4b1d441d82321924591ff313f336566b36e5215a51a8. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZ5FN2204747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93bdc0dc97494b8c1c6bd11cae34721ae08832a0439c54485c32c7038950d83. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZ5FN2204749.
Sweedish Rhapsody (Midsummer Vigil, No. 1, Op. 19)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761bfc4afcde77f87b087c3cc4510fcc219cafccff5fa4a16e8fdb8c9238bc64. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:51:16Z), 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/QZ5FN2204753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ac8b252e0ca97cbaa155e8d28cb8bfec46f0303c6347a59da0d3dab659d489. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZ5FN2204782.
Speak Softly Love (Love Theme From The Godfather)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd58ad745cb83353070357ffa21941c197d8a373c1e0a4d8a215f60f8ed32977. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:55:20Z), 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/QZ5FN2238781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf698c523c6bcfac74c13b5c45ad30cb30af7cab14d390d1bd8cf9cd8e5a2e8b. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZ5FN2238691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1488e0ae70cb735ac5fd1c6460848cc31a060d223bb48738336e8399d3f4a7d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZ5FN2238709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ef3e1248bd1b7f41524361ec4d5748a16f38b0b97c316b748f1aa772f6592d. 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/QZ5FN2212672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82352e7a97a8bca947621a83cad5c4e3b95cc25ca0ed99853dad31604119c06c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZ5FN2212674.
Great American Composers George Gershwin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ddaca7d7d06a36dce05368dbb0e5470c83ec64a82e0ca821f3734ea5c80a05. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZWDD2383920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a9c927533b311bccca6d9afeccbb1adb3b52ca636f753f1e50e36071ee66a0. 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/QZWDE2320089.