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 0xb9c2432bb011ee1ac81e45cc23e3a6fab9e6f6ac86f41f644543745a1d915a80. 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/d9e37ec4-22ae-46f5-919d-be15ba6c0597.json and https://artists.proofprofile.net/proofs/artist/d9e37ec4-22ae-46f5-919d-be15ba6c0597.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 0x2c71144e6643a2c591ae4a2789323d2f1a74cefcaf7560461e9fff83c3a138a5. 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/QZMZ92175709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb650a84398efba777b15dc8f54f0575419cc69aa520ea2c27fdf37c6cdf83eae. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX991502436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98656154f408acf8679b619ff4c22e07035cd9f293ff1d895412ac447d3dcbf2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHZ31974900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6204df006a73d88cf3af3eea9d46d4d322cc124caaf103e4ddb2453bae8279b3. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZHZ31974906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf42de6c5cf1bcd8d83f846441c87a5ad239f0a171c7d45b9d474ebf3eff230. 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/QZHZ31974908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb3c25849014f3c5c1969ceb34f97d515669fd078452d687a48680416f8afb8. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:54:18Z), 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/QZHZ31974914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9af431f3a4322b0d1fb8836486d09488981c4b0b538d00661649e9cb81bd24. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZHZ31974915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef38ddec85e808c02557ba7bc708277038ddbad7896f75439a3e943e9a297765. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZHZ31974918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241aca34bdf740960d9574ce4792825eb4909b6519189a32ecc84c2b99753c63. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHZ31974923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6523e5bed08ac5ef6123af3f3357ba7288d3e58446cb840ff54db603e84915e0. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZHZ31974924.
Concierto Criollo Sinfónico (25 Aniversario )