1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf4d2ca63c09c1f1c9fe4e6494f6c451aee1121264dda94b2d17a73e6a2ef80b6. 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/f6c55dac-9e0b-47f9-981d-bf78d0c6d4ac.json and https://artists.proofprofile.net/proofs/artist/f6c55dac-9e0b-47f9-981d-bf78d0c6d4ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
"My Favorite Sheldon Harnick Show..." (Live)
The Ballad of the Shape of Things (Live)
"Jerry Bock and I Wrote a Song..." (Live)
"Cy Coleman and I Had a Meeting..." (Live)
"He Drew from Very Personal Images..." (Live)
I Couldn't Be with Anyone but You (Live)
"It's Time to Start Saying Goodnight..." (Live)
John & Jen (2015 Off-Broadway Cast Recording)
Big Fish (Original Broadway Cast Recording)
{"copyright_id":"0x49f576309b799232e0ea6495ec37faf7fddfa907a5d3415ed0a714c5cbec6f86","isrc":"QMQYB1402505","name":"Two Men in My Life","registered_at":"2026-06-07T22:31:23Z","spotify_id":"4biFVEfZXKU8uaNX8tRElx","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f576309b799232e0ea6495ec37faf7fddfa907a5d3415ed0a714c5cbec6f86. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4biFVEfZXKU8uaNX8tRElx.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4biFVEfZXKU8uaNX8tRElx.
{"copyright_id":"0x194311e643c6378eeef8123f01af59a5268bda7d4d3d43da9d41d0b251e6f3a0","isrc":"QMQYB1402507","name":"Little Lamb from Alabama","registered_at":"2026-06-08T06:15:31Z","spotify_id":"0CmAOZCPrgA7MgIjSZIVBd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194311e643c6378eeef8123f01af59a5268bda7d4d3d43da9d41d0b251e6f3a0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0CmAOZCPrgA7MgIjSZIVBd.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0CmAOZCPrgA7MgIjSZIVBd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfe1664929e7b9c539941a9509d43015634a20bfd64794ee45672fe64966cee. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/25VF8dygxSlpGS0yPfj8pO.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/25VF8dygxSlpGS0yPfj8pO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b9403a467e6483795938ad00cab9f9cd86c5dd1f5e58abbed0aa4289a9cc94. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/575iCJ8dSMEhO9XZIxT9wk.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/575iCJ8dSMEhO9XZIxT9wk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3759c05fb056725ec99bc606f09cb8b21f9e396394bde9d6ee958e369829062. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6hNqH5N1Wq788xvJ19xDhg.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6hNqH5N1Wq788xvJ19xDhg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a9a95e83f24bf9a410625a1b74a4613ed481b4a96b7f76e945da70615ce811. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5zi2edGYLcRoN8ZKFQBlWH.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5zi2edGYLcRoN8ZKFQBlWH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc07a35b0f36f6d2a6241a4e7a40c61b658d0090d295822d6830ef94aaf0496. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2nr8YAVJs3xazZ4Wj8epgl.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2nr8YAVJs3xazZ4Wj8epgl.
(Sorta) Love Songs: The Songs Of Scott Burkell And Paul Loesel
Kitty's Kisses (World Premiere Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47349a33ae038e1c5b189ac67c1fd76f979417a77e4b16655993086d1e152a3b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2Lnd5DGUqkUoJE95ukHKd9.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2Lnd5DGUqkUoJE95ukHKd9.
{"copyright_id":"0x767d568de364b2f26e66d280e01a9eac8869be62ffa224252b973cf16f0db2f0","isrc":"GBRKQ2409543","name":"The Impossible Dream","registered_at":"2026-06-09T06:33:27Z","spotify_id":"7uYFgDfs7o1eLhRroKCxVf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767d568de364b2f26e66d280e01a9eac8869be62ffa224252b973cf16f0db2f0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7uYFgDfs7o1eLhRroKCxVf.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7uYFgDfs7o1eLhRroKCxVf.
Thirteen Stories Down: The Songs Of Jonathan Reid Gealt
All the Possibilities: Broadway Sings Wartofsky