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 0x378cd8da617fa8fa5a166e7ed4792610ecd52409e70876bca198a0144a41eb9d. 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/162455f1-2aa0-4cec-941a-832d4a8db837.json and https://artists.proofprofile.net/proofs/artist/162455f1-2aa0-4cec-941a-832d4a8db837.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jan Metternich instrumentals (Instrumental)
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 0xb1177884c66bdf86599476ee0b46bb4c1a74b5c2749595741ac710c4885b9d7d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:35:37Z), 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/QZHN42492442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f51c6ce14569c95fce8a9fa66aad979fca0096fbe4e4b55004119fc1ec98764. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZHN42492443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fcd81415e2d67b8e30dd39998e4906ca864989bf7088f0209ee84456f3cbf7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHN42492444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bec80c5b93628e96d1f0207ff57841bc3009f94c8f648ab6929d33c9ae9b2eb. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZHN42492446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e53cdb226051148789542d378315de5aca5a9b1373005d6c42cbfd0d194a63. 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/TCAIZ2412629.
Sonata No. 1 in F-Sharp Major, Op. 1 "Energia Eterna"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61af70c04fb01bdc4e6caddc3ed508d973829d341c4d208641d7dba33b08ac5e. 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/TCAJC2448404.
Bagatelle No. 1 in E Major, Op. 2 "Hedi"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c6417828263dddd263a2c5ee3572d9728603adeb616f8716642e03f6db4aaa. 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/TCAJC2448408.
Rondo No. 2 in C Major, Op. 8 "Echohall"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afc08b92e3f37eed75b82425d6575075ebd99384e1fa95fe3761c9c6598e805. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAJC2448433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa50e068c45896b1d1068836e03804216b7847577496b220346dbfff3d998e8. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QT6622533044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8757091317b08979f621139db26637e230e1d61dca63dc595949c0e619c55058. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT6622533046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b90b22cc910182c1ddfaa0623e21e5938a5b9dba0d4b6ac769e881cbd1d4cdb. 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/QT6622533049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618d21070143db56f5e67ab8d641ae07b57af8734d7347ef0f55d00c45f21486. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT6622533051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e95100ec2aab10ec78796dab7ab9b3ca69ef338bc91934154db20121ce079c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QT6622533052.