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 0xadf09687bc72dfaba997ea3b3ec93e75fc55d8db418e91328d0e1a04728f52da. 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/a5ad463c-2243-42aa-be6b-5b4c61b64c09.json and https://artists.proofprofile.net/proofs/artist/a5ad463c-2243-42aa-be6b-5b4c61b64c09.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x8b6dbbae57bcb98e92d5da02d696a753e43f38374b838089185a4a0cf65b2fc8. 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/4AjfmF1r14mLhY16BKG8uK.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/4AjfmF1r14mLhY16BKG8uK.
Minnie's Favorites (Songs from "Mickey Mouse Clubhouse")
{"copyright_id":"0x5842f0f6df587375abd94a612c8dfff8df0a829498f714053ee80b82f7dc5b2d","isrc":"USWD11365044","name":"Glow Bow","registered_at":"2026-06-05T07:14:10Z","spotify_id":"7fqoHkeiWrUJdisCafl7Sw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5842f0f6df587375abd94a612c8dfff8df0a829498f714053ee80b82f7dc5b2d. 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/7fqoHkeiWrUJdisCafl7Sw.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/7fqoHkeiWrUJdisCafl7Sw.
{"copyright_id":"0x02ff42a29e36972f4710fa0fcf6a7dce66a7d84d92a132baf6e63b04fa6da8c5","isrc":"USWD11365045","name":"Minnie's Minuet","registered_at":"2026-06-05T12:55:30Z","spotify_id":"3pBJXH5YArCWbRgJkAgBQW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ff42a29e36972f4710fa0fcf6a7dce66a7d84d92a132baf6e63b04fa6da8c5. 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/3pBJXH5YArCWbRgJkAgBQW.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/3pBJXH5YArCWbRgJkAgBQW.
Mickey and Friends Trick or Treats - Cast
Mickey and Friends Trick or Treats (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc9347130860e1f8b78b33920fb4ffb6ae6091d56ab19aa82b2019c979a7e91. 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/6TEVxvhwqwKd2L901uUUQk.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/6TEVxvhwqwKd2L901uUUQk.
Twinkle, Twinkle Little Star, Baa Baa Black Sheep, ABCs
{"copyright_id":"0xc2b813e30f5cfbdff7a3bcb2e624faae8d5eb2e7af51d2dc3932b52ad8f7d7c7","isrc":"USWD10220132","name":"Twinkle, Twinkle Little Star, Baa Baa Black Sheep, ABCs","registered_at":"2026-06-05T05:55:57Z","spotify_id":"4cBY3lOH8IjZSyLux1UPly","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b813e30f5cfbdff7a3bcb2e624faae8d5eb2e7af51d2dc3932b52ad8f7d7c7. 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/4cBY3lOH8IjZSyLux1UPly.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/4cBY3lOH8IjZSyLux1UPly.
{"copyright_id":"0xef2c71315333ba19312b1ca3a4c5ff037218e0921d26b303f42a6b26fbcb9003","isrc":"USWD10210230","name":"You're a Grand Old Flag","registered_at":"2026-06-07T16:29:27Z","spotify_id":"62iACiHS8llJsddf8LFZQA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2c71315333ba19312b1ca3a4c5ff037218e0921d26b303f42a6b26fbcb9003. 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/62iACiHS8llJsddf8LFZQA.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/62iACiHS8llJsddf8LFZQA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2499792763e86c9029199b33deeb4365e421c064d701c622e0ff66084e9848. 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/3Whgddy2PpOiS4Mp5kU66Z.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/3Whgddy2PpOiS4Mp5kU66Z.
{"copyright_id":"0xe9ae8c4bf2b24b1f1e65c2fa2934f248dbf8acc852387e2cc6154e30ea37dee6","isrc":"USWD10936961","name":"Wiggle Wiggle Wiggle","registered_at":"2026-06-04T08:56:19Z","spotify_id":"0wYpXvs9zwggrpHrt9QztO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ae8c4bf2b24b1f1e65c2fa2934f248dbf8acc852387e2cc6154e30ea37dee6. 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/0wYpXvs9zwggrpHrt9QztO.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/0wYpXvs9zwggrpHrt9QztO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82efecfb878c2917448c5ef38997da1e5463438377876bea8cf56b301198f8ca. 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/5el4SScvx2Jvet3y2ARTjz.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/5el4SScvx2Jvet3y2ARTjz.
{"copyright_id":"0xc742a7b1c0fa9a8f2db466870f3b10492145c2a448232becccddc590b9461ed6","isrc":"USWD10936964","name":"Rainbow Colors","registered_at":"2026-06-05T05:43:22Z","spotify_id":"5sSHX20qKfhAUEfPx87PLd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc742a7b1c0fa9a8f2db466870f3b10492145c2a448232becccddc590b9461ed6. 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/5sSHX20qKfhAUEfPx87PLd.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/5sSHX20qKfhAUEfPx87PLd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4f0ef705a5f943295c8ee423461c3320408e20ed8110762fd5aa54d4cd5b98. 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/1N03LSnQ3ExNt5o2nydnWo.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/1N03LSnQ3ExNt5o2nydnWo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d56170818eee1aebb11d7308e0c599c0004dfe2032a6a87675ef936882dd041. 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/1YHlSbJVBGoPt8MbK3NuQx.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/1YHlSbJVBGoPt8MbK3NuQx.
{"copyright_id":"0xb2ee5c554dffde656f5d59b8eb292a751b2bda1dc6c734f74551d10e0650cdcf","isrc":"USWD10936954","name":"Floatin' Bubble Song","registered_at":"2026-06-04T15:21:09Z","spotify_id":"3RTdUBWfwH987NNujRCQYl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ee5c554dffde656f5d59b8eb292a751b2bda1dc6c734f74551d10e0650cdcf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3RTdUBWfwH987NNujRCQYl.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/3RTdUBWfwH987NNujRCQYl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b1d3ba0f8e9ba95bbb50cc680a5c90e5e1f83e79212fc788c8079f03affddd. 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/0c0bOcq1evGAlS2b8FsDaH.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/0c0bOcq1evGAlS2b8FsDaH.
{"copyright_id":"0x896ffdab0fca5d3b5b09159ad3181dc868dbd3afe58dc89045d3dd25bc415480","isrc":"USWD10322443","name":"A Shaggy Dog Story","registered_at":"2026-06-07T03:48:20Z","spotify_id":"5r4U4YE3XXZf963w7OdKFw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896ffdab0fca5d3b5b09159ad3181dc868dbd3afe58dc89045d3dd25bc415480. 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/5r4U4YE3XXZf963w7OdKFw.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/5r4U4YE3XXZf963w7OdKFw.
{"copyright_id":"0xe1ad8a266f70ae7001a04bea85174eb2fa710ec7eca04f0ae11632a227022efd","isrc":"USWD10322435","name":"Tickle Your Funny Bone","registered_at":"2026-06-08T06:09:47Z","spotify_id":"5EO64rhEY5ojlZIlKRkqbM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ad8a266f70ae7001a04bea85174eb2fa710ec7eca04f0ae11632a227022efd. 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/5EO64rhEY5ojlZIlKRkqbM.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/5EO64rhEY5ojlZIlKRkqbM.
{"copyright_id":"0xeb81acb7a50b62f9bc8fb757ce2f6e436ebffdc30db09209e6c853ac57ffc537","isrc":"USWD10321457","name":"Rudolph the Red-Nosed Reindeer","registered_at":"2026-06-06T11:10:38Z","spotify_id":"6nCeEcPeoMRKnivjCw1Tc9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb81acb7a50b62f9bc8fb757ce2f6e436ebffdc30db09209e6c853ac57ffc537. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6nCeEcPeoMRKnivjCw1Tc9.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/6nCeEcPeoMRKnivjCw1Tc9.
Turkey In The Straw (from "Steamboat Willie")
A Musical Tour: Treasures of the Walt Disney Archives at The Reagan Library
{"copyright_id":"0xfdb283344fd107d65ee5b32451b9e5f15b5316c1a6ef216f09743c2f79785577","isrc":"USWD10321100","name":"Turkey In The Straw (from \"Steamboat Willie\")","registered_at":"2026-06-17T22:00:30Z","spotify_id":"4JKKEHCA8jt5SMwhxOCScO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb283344fd107d65ee5b32451b9e5f15b5316c1a6ef216f09743c2f79785577. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4JKKEHCA8jt5SMwhxOCScO.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/4JKKEHCA8jt5SMwhxOCScO.
{"copyright_id":"0xeb81acb7a50b62f9bc8fb757ce2f6e436ebffdc30db09209e6c853ac57ffc537","isrc":"USWD10321457","name":"Rudolph the Red-Nosed Reindeer","registered_at":"2026-06-06T11:10:38Z","spotify_id":"4UUhE9j5sG3E5rxPK79e73","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb81acb7a50b62f9bc8fb757ce2f6e436ebffdc30db09209e6c853ac57ffc537. 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/4UUhE9j5sG3E5rxPK79e73.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/4UUhE9j5sG3E5rxPK79e73.
{"copyright_id":"0x7e09c2967689a3b4df8c38af1fdb4d901dec7bc74934e8bd8eb028dc453b385a","isrc":"USWD10321581","name":"Turkey In The Straw","registered_at":"2026-06-07T15:48:39Z","spotify_id":"2hzJsrY5ebbUEwgIdiVWAZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e09c2967689a3b4df8c38af1fdb4d901dec7bc74934e8bd8eb028dc453b385a. 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/2hzJsrY5ebbUEwgIdiVWAZ.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/2hzJsrY5ebbUEwgIdiVWAZ.