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 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 0xaa1cdf992a3509af6c0fd0e94b843e02d1642142e08c0dec4a28f6e59e7d54b3. 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/e89dd836-07cc-4f9f-92fb-f67eb3c02065.json and https://artists.proofprofile.net/proofs/artist/e89dd836-07cc-4f9f-92fb-f67eb3c02065.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Ultimate Collection: Musicals, Vol. 3
The Ultimate Collection: Musicals, Vol. 4
The Ultimate Collection: Musicals, Vol. 2
The Ultimate Collection: Musicals, Vol. 1
Joseph and the Amazing Technicolour Dreamcoat
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 0x75f186ae1fd03a9a1226042e7a57a548b77bf989fc7c2f6ca63f6d8f2f5dc033. 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/GBQRF0815170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b3995e2202c4ccd88ebf91d3aaf6f63d6e46b77fd482fb8d5b9fc2bc9391bf. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/GBQRF1101678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea38752f8f4185efbc778d6928fa2a09e0ab5850e54ec4fd1a773cfe0c289b61. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/GBQRF1101639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b1f91e9666165d8bd3174fbcde111981994622d99ad21d8060e55061be6a60. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/GBQRF1101638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8952e270c26d2e152cad5948630fe8454e7de99c20172f7360de538883033781. 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/GBQRF1205539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c0077b33879d5eab15e88fbebba9c9738b00b236201ba8c1b10be05783748f. 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/GBQRF1232575.
Music from The Alan Peters Orchestra and Cast, Vol. 2
The Definitive Musicals Collection, Vol. 2
Music from The Alan Peters Orchestra and Chorus, Vol. 1
The Definitive Musicals Collection, Vol. 3
The Definitive Musicals Collection, Vol. 1
Musicals: Greatest Hits Collection, Vol. 1
Musicals: Greatest Hits Collection, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a6509d81f09069aaf65747c6b9d1f27cf91fb81d929632f4cf06bc4decd9f0. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/GBQRF1208619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c80dc268377399ffeaec8710f27e356670b400219c17069aba362dc95683e8. 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/GBQRF1239753.
Music from 1789: Les Amants de la Bastille
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cecdb1225ceb52e37ca69de4bd6af183cf9aef673143ab4c2575f4309b01c18. 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/GBQRF1205575.