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 0x76f2d6d4966e6c0edd6087ccc870df4b4b6c79fe9ac02cc1eb216be089caa87c. 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/71c33929-6410-4a76-835a-4da4bcf633ac.json and https://artists.proofprofile.net/proofs/artist/71c33929-6410-4a76-835a-4da4bcf633ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
It's the Most Wonderful Time of the Year
{"copyright_id":"0xc4bee121bc7b321073f01879f8954c26c004c454d19c9254608cfa94b48ef299","isrc":"USSM11905873","name":"It's the Most Wonderful Time of the Year","registered_at":"2026-06-28T23:06:22Z","spotify_id":"01rUoU3i3prpoPEWg9H2pS","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 0xc4bee121bc7b321073f01879f8954c26c004c454d19c9254608cfa94b48ef299. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/01rUoU3i3prpoPEWg9H2pS.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/01rUoU3i3prpoPEWg9H2pS.
{"copyright_id":"0xc4bee121bc7b321073f01879f8954c26c004c454d19c9254608cfa94b48ef299","isrc":"USSM11905873","name":"It's the Most Wonderful Time of the Year","registered_at":"2026-06-28T23:06:22Z","spotify_id":"6Dd8MDKnjFFAN5hgipzVEc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bee121bc7b321073f01879f8954c26c004c454d19c9254608cfa94b48ef299. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6Dd8MDKnjFFAN5hgipzVEc.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/6Dd8MDKnjFFAN5hgipzVEc.
I'll Be Home for Christmas (feat. Jonathan Groff)
Angels We Have Heard on High (feat. Cynthia Erivo)
{"copyright_id":"0x0acd968e4f116987ce088a845cd72a9bc20f1441ff1a5bd26812c2c28e1fc580","isrc":"QM24S2106595","name":"Here Comes The Sun","registered_at":"2026-06-28T23:14:28Z","spotify_id":"4nXup2GErkMBBqNf3qnT7Z","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acd968e4f116987ce088a845cd72a9bc20f1441ff1a5bd26812c2c28e1fc580. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4nXup2GErkMBBqNf3qnT7Z.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/4nXup2GErkMBBqNf3qnT7Z.
Funny Girl (New Broadway Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d85a6e30f36d11702de4c965cfdd0cd4f0377fb819d9f98731943b0da491c1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3yT711CNJnCgWxSI8qWXz0.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/3yT711CNJnCgWxSI8qWXz0.
{"copyright_id":"0x9a1ac2cdbba9a59dd1ed9564fd48733fb4a97dce74b1bb74a8166e3bcc5da119","isrc":"USQX92205760","name":"His Love Makes Me Beautiful","registered_at":"2026-06-28T18:22:47Z","spotify_id":"1V9cUK4paWRO3M84RFuDFf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1ac2cdbba9a59dd1ed9564fd48733fb4a97dce74b1bb74a8166e3bcc5da119. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1V9cUK4paWRO3M84RFuDFf.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/1V9cUK4paWRO3M84RFuDFf.
Burt Bacharach and Steven Sater's Some Lovers (World Premiere Recording)
The Song Of Purple Summer - Original Broadway Cast Recording/2006
Michelle Obama All-Star Girl Power Anthem - This Is for My Girls - Offer Nissim Remix
{"copyright_id":"0x0bb7ec9732ca69fcfc5e0d8d9d83a988ba7e9cb325e21d7922abc7b507212e53","isrc":"USA2P1701115","name":"Michelle Obama All-Star Girl Power Anthem - This Is for My Girls - Offer Nissim Remix","registered_at":"2026-06-08T10:49:24Z","spotify_id":"3CLN2xU2xE1Ggh9Jvp8Dss","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb7ec9732ca69fcfc5e0d8d9d83a988ba7e9cb325e21d7922abc7b507212e53. 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/3CLN2xU2xE1Ggh9Jvp8Dss.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/3CLN2xU2xE1Ggh9Jvp8Dss.
What Child Is This? (feat. Jennifer Damiano, Lea Michele, John Gallagher Jr.,, Jesse Swenson & Remy Zaken)
Broadway's Greatest Gifts: Carols for a Cure, Vol. 9, 2007
Touch Me - Original Broadway Cast Recording/2006
{"copyright_id":"0x55c3cd63edd5e605997baa513cd423360d5aff8b23f90ab33b8aefbcc0c898ee","isrc":"USUM70619106","name":"Touch Me - Original Broadway Cast Recording/2006","registered_at":"2026-06-04T16:34:49Z","spotify_id":"11YRYax7RFkgfmTHeNXW6X","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c3cd63edd5e605997baa513cd423360d5aff8b23f90ab33b8aefbcc0c898ee. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/11YRYax7RFkgfmTHeNXW6X.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/11YRYax7RFkgfmTHeNXW6X.
Original Broadway Cast of Ragtime: The Musical
Ragtime: The Musical (Original Broadway Cast Recording)
{"copyright_id":"0xe65830649b3a8c85919ed81123842cfb40f8cb81bafaf6962693e6caa9a4459c","isrc":"USBC19800934","name":"A Shtetl Iz Amereke","registered_at":"2026-06-10T15:52:06Z","spotify_id":"6wTuDZdcOnlxW8g9ZwDEvX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65830649b3a8c85919ed81123842cfb40f8cb81bafaf6962693e6caa9a4459c. 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/6wTuDZdcOnlxW8g9ZwDEvX.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/6wTuDZdcOnlxW8g9ZwDEvX.
{"copyright_id":"0x8673561fc96db62762169c4a81ebe661ee0580dc8c6cec83aeef13caf2dcbb17","isrc":"USBC19800939","name":"Nothing Like the City","registered_at":"2026-06-10T15:48:52Z","spotify_id":"5uRTOcnMiyhqZtUJvlvDmr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8673561fc96db62762169c4a81ebe661ee0580dc8c6cec83aeef13caf2dcbb17. 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/5uRTOcnMiyhqZtUJvlvDmr.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/5uRTOcnMiyhqZtUJvlvDmr.
The Night that Goldman Spoke at Union Square
{"copyright_id":"0x9061b80917e14cd9a0b9d67823dc4d4456682bccfa0a03f57c4aebd6a640db1c","isrc":"USBC19800944","name":"The Night that Goldman Spoke at Union Square","registered_at":"2026-06-09T15:57:50Z","spotify_id":"5mLaPO0Dr2Xr59TURQRyCH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9061b80917e14cd9a0b9d67823dc4d4456682bccfa0a03f57c4aebd6a640db1c. 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/5mLaPO0Dr2Xr59TURQRyCH.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/5mLaPO0Dr2Xr59TURQRyCH.
Mama Who Bore Me - Original Broadway Cast Recording/2006
Spring Awakening (Original Broadway Cast Recording)
{"copyright_id":"0x2d81675bc384bc37c5b4e8088a339fe473ca173a9d1affb37aec1422737171a4","isrc":"USUM70619077","name":"Mama Who Bore Me - Original Broadway Cast Recording/2006","registered_at":"2026-06-04T10:34:30Z","spotify_id":"4e51xdDLaQW08LHNhdkwl9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d81675bc384bc37c5b4e8088a339fe473ca173a9d1affb37aec1422737171a4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4e51xdDLaQW08LHNhdkwl9.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/4e51xdDLaQW08LHNhdkwl9.
Mama Who Bore Me (Reprise) - Original Broadway Cast Recording/2006
{"copyright_id":"0x22e477445d53c330ed7f9962343672bec8c8c3709b9c1c34eb57103c01712886","isrc":"USUM70619096","name":"Mama Who Bore Me (Reprise) - Original Broadway Cast Recording/2006","registered_at":"2026-06-04T15:36:54Z","spotify_id":"7MRPgpkbsKA1FQsLPUeosU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e477445d53c330ed7f9962343672bec8c8c3709b9c1c34eb57103c01712886. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7MRPgpkbsKA1FQsLPUeosU.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/7MRPgpkbsKA1FQsLPUeosU.
My Junk - Original Broadway Cast Recording/2006
{"copyright_id":"0xca69a6cfb7ae7aa2f55b59325a6d679129e14fc732f55dd3b66a22bd8ac0aa88","isrc":"USUM70619097","name":"My Junk - Original Broadway Cast Recording/2006","registered_at":"2026-06-05T04:59:34Z","spotify_id":"1ObqIFmNsmION2gjrvYycO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca69a6cfb7ae7aa2f55b59325a6d679129e14fc732f55dd3b66a22bd8ac0aa88. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1ObqIFmNsmION2gjrvYycO.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/1ObqIFmNsmION2gjrvYycO.
{"copyright_id":"0x55c3cd63edd5e605997baa513cd423360d5aff8b23f90ab33b8aefbcc0c898ee","isrc":"USUM70619106","name":"Touch Me - Original Broadway Cast Recording/2006","registered_at":"2026-06-04T16:34:49Z","spotify_id":"5QithZNnOkwRsvoD5vWQmh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c3cd63edd5e605997baa513cd423360d5aff8b23f90ab33b8aefbcc0c898ee. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5QithZNnOkwRsvoD5vWQmh.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/5QithZNnOkwRsvoD5vWQmh.
The Word Of Your Body - Original Broadway Cast Recording/2006
{"copyright_id":"0x205905eed75ec6f80e0368bddbdb9e1a175262f3fe335db3f5fc3a9ec3b53d95","isrc":"USUM70619103","name":"The Word Of Your Body - Original Broadway Cast Recording/2006","registered_at":"2026-06-05T15:23:52Z","spotify_id":"5ObOgpopH8RvthFXZP3YMd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205905eed75ec6f80e0368bddbdb9e1a175262f3fe335db3f5fc3a9ec3b53d95. 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/5ObOgpopH8RvthFXZP3YMd.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/5ObOgpopH8RvthFXZP3YMd.
I Believe - Original Broadway Cast Recording/2006
{"copyright_id":"0xf657bacdad5b14d6168a94ee29e96f78424e322143d876abbce3f8ebe7dd8af9","isrc":"USUM70619075","name":"I Believe - Original Broadway Cast Recording/2006","registered_at":"2026-06-06T02:36:44Z","spotify_id":"5yT793oYqv5gU3NmrK9VwB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf657bacdad5b14d6168a94ee29e96f78424e322143d876abbce3f8ebe7dd8af9. 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/5yT793oYqv5gU3NmrK9VwB.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/5yT793oYqv5gU3NmrK9VwB.
The Guilty Ones - Original Broadway Cast Recording/2006
{"copyright_id":"0x6569faef70d5c939db3af067932cefeb2e3642fa2ec29bdce395ad24f335daa6","isrc":"USUM70619100","name":"The Guilty Ones - Original Broadway Cast Recording/2006","registered_at":"2026-06-06T02:37:58Z","spotify_id":"7rPHccalyoMbesQaF4qbmj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6569faef70d5c939db3af067932cefeb2e3642fa2ec29bdce395ad24f335daa6. 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/7rPHccalyoMbesQaF4qbmj.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/7rPHccalyoMbesQaF4qbmj.
Left Behind - Original Broadway Cast Recording/2006
{"copyright_id":"0xbe1a31a86e83b8f2c3ec521b0febd312c0972dbdb11721ca5d219a094a7df499","isrc":"USUM70619076","name":"Left Behind - Original Broadway Cast Recording/2006","registered_at":"2026-06-05T16:08:14Z","spotify_id":"3nLH8otsE0Prl1FNK65G3H","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1a31a86e83b8f2c3ec521b0febd312c0972dbdb11721ca5d219a094a7df499. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3nLH8otsE0Prl1FNK65G3H.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/3nLH8otsE0Prl1FNK65G3H.
Totally Fucked - Original Broadway Cast Recording/2006
{"copyright_id":"0x34b41a90861624913f71f0c690c172f2e7403176f9f7d1a4b1d10cd109f21cdf","isrc":"USUM70619105","name":"Totally Fucked - Original Broadway Cast Recording/2006","registered_at":"2026-06-04T12:53:08Z","spotify_id":"2s1LwWGa7WYHT2y1I0BVnh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b41a90861624913f71f0c690c172f2e7403176f9f7d1a4b1d10cd109f21cdf. 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/2s1LwWGa7WYHT2y1I0BVnh.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/2s1LwWGa7WYHT2y1I0BVnh.
The Word Of Your Body (Reprise) - Original Broadway Cast Recording/2006
{"copyright_id":"0xd259b6ef2d141ecf45e0f14e68f4d2877ec069a927e4ab9e51d4b40761478e93","isrc":"USUM70619104","name":"The Word Of Your Body (Reprise) - Original Broadway Cast Recording/2006","registered_at":"2026-06-06T16:28:06Z","spotify_id":"4gpqhqFWeDJmNfvEdIw9bg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd259b6ef2d141ecf45e0f14e68f4d2877ec069a927e4ab9e51d4b40761478e93. 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/4gpqhqFWeDJmNfvEdIw9bg.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/4gpqhqFWeDJmNfvEdIw9bg.