Jason Howland is a musical theatre composer, playwright, conductor, music director, and producer. In 2015, he won the Grammy Award for Best Musical Theater Album for his work producing the cast record
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 0x4e93c9f3385676528a79ca46979b57a574cc06314b4e0fe426c4c85d129f9341. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9b76eb0-5be5-4e32-9402-0208feec7894.json and https://artists.proofprofile.net/proofs/artist/c9b76eb0-5be5-4e32-9402-0208feec7894.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Killer Party: A New Musical (Original Cast Recording)
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 0x47f043bb6fc90dacf9afd1c694316713ddecd20e8467271ea4a9ae705204a761. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMQYB2018601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff3d7710e812f6072006a0a930cca8440637b1b3e6b2ddaef7f183ffd7d0876. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMQYB2018603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e913a0bb677e3a39f3cdca7b6f201f4fb9bdab95badcd4d22366f9e7f5cef75. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMQYB2018604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9dd58c15c25f856b0d1a81c3430a8f41463bbac5dc1a084eb629b6ce6d25d7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMQYB2018605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7132ff32b132ace5f250a7b5db9655d00eddb00497e8679bbdce16de77db984. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QMQYB2018607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5570b025130b0107d689cbfdeaccdb7d9c013ee931142894ea27a3afb1ab8b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMQYB2018609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c60f2231b4de7f95a35f71b216286e55ebad8ba74a99e7e7568288bfb3ef13e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMQYB2018610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2480f4ac00942df3cd3d0fe4343e799ad8bd33c56c75dcb5b6fd8ce5cb58e93. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:02:55Z), 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/QMQYB2018612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a52dd85d70d172cde2006058b863aebd04230dddbf964223a4ac8dab4b7d27. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMQYB2018614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f8d1c6778bf2a63177970d5d13ccc49eba02a6af9657e60f7b5e3094bc2af6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMQYB2018615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1e5324a2ba683c7e5b6e509a5f80e9ae2f3a4835692d69b6ea8f18b0693317. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T16:29:15Z), 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/QMQYB2018616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2894da83dec5f579f337250211772a5054d0fdcef9ac31a2d29f587e7cfeb8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMQYB2018617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4481ff963029b5a81b288205a165539784cefdf76dd8142eb3cf614ea5c5b3c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMQYB2018618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ef82686b3db486ea52cb2f555f1c0d28dd2a8320bd8c9dcc5e44a53ff8e2e0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMQYB2018619.
Jekyll & Hyde: The Gothic Musical Thriller
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6deba8bb573ebafd6c3f3bc0323b8d2a968bdfeb8c50a209b840a28bb17610. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USAT20403082.