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 0xbb5e6e7af0429d1c888efdb7fa3ab838b35d753a7f5525118602317ec05b0bbc. 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/a374467f-025f-48eb-885f-0dae1f7ee77d.json and https://artists.proofprofile.net/proofs/artist/a374467f-025f-48eb-885f-0dae1f7ee77d.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 0x65d656897b9452379fa8df7302536b009c46951f9dccba2a9fc13812ca5c17ba. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCADY1863726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9bec9fb6dd31d8cdc51d6021e789c0a9dae932784607eae76311bac95109f8. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:59:43Z), 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/USCGJ2007660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509650adfe0b2270e7cdf3bc8415aee5806fcb18645c750f7ee7973f374b0d6a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USCGJ2007663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9e27ebcb7ae34ea6dcfec006d16e3cbf48264d2ea0dd2d159368946ce226ca. 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/QZHN32034711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7adc48b737f9980e47c0fe80612f32d5b6538994089e0b02e21a891b14629b. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:04:30Z), 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/QZHN32034713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac070d70c9267fc102a564ce16afe68cb72fc554cdce747942a853294054c9b. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:15:40Z), 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/QZK6F2174400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619f6250d635675a78d5ad6806568435c69fa59dbf8d227531400bca54f1eccd. 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/QZK6F2174407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f89cb855a50758c3488faff8c83e039c8d3e15aacc0ff7eba0b3bef1ef6d8a7. 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/TCAFM2133143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d74f19fa0e9785c300f712c367cbad69700b2b52453c0cb29eafc2f37c63e2. 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/QZES52092692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b899e4f8d4d654d0f8dd8de15c2a52e14107a4a2235cdeea937dacc983e312. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:47:21Z), 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/QZMEN2088912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8907003458078d8f38ed1706f2f528e82854fecf79404aea97241c5ba93e06ff. 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/TCAFM2133337.
Navidad de Gala (concierto en vivo) [En vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b8f855fd7fc0088ab381ab0a2ff7503cd20da4e174932b0821fc4ca48d117d. 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/QZNWW2109711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7652b6cf28a0daf7ca15f2e7d6f25e73c3bf312320e48de592e5d20509d66038. 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/QZHN72559471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140f63f460eda8cde2d260945821ac211cc0c7b8333981856731d5953f110e62. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZK6M2503482.
El Sueño Imposible (The Impossible Dream)