Nathan Tysen (born January 15, 1977) is a Grammy-nominated American songwriter whose musicals have appeared on Broadway and the West End. Musicals with composer Chris Miller include Tuck Everlasting,
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 0x0a8c474dfed0f161ffb8aa6f10e414838cb63d25529f94ede5b98e4645435ef6. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32cd62fe-107c-46d3-bec9-233bbfd326e7.json and https://artists.proofprofile.net/proofs/artist/32cd62fe-107c-46d3-bec9-233bbfd326e7.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 (2026-07-13T07:53:33Z), 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/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 (2026-07-07T12:58:18Z), 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/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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e8c8b3f2be4cda14d834cb7f2cf4ebe64c86b34bb5acf80393e44454acfad7. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/QMQYB2018602.
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 0x7108f7aa5bb45d7425b6f1ce44877f43b3faa712298c1f373e653e7b69823718. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QMQYB2018606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2026320168a78b5d17be3c47b5e3d25bcb97ff2c336b275e55cb890b32ba5fb9. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QMQYB2018608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75df84f1def81fa2e25ff67400044da8f9985136cfa7d5f529a50ebe821e42c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QMQYB2018611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70801e7d5ca51b38ab657c446868ef30a30d087b44de37d164e9561327e7b1a0. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/QMQYB2018613.