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 0x657523d7e90476f10e7a4ff1a41b3a244e0528fdc642ebcfe334878438afd00e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ac075d9-1f64-46c6-b56a-b01cb87de31e.json and https://artists.proofprofile.net/proofs/artist/8ac075d9-1f64-46c6-b56a-b01cb87de31e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cockeyed Optimist : The Songs of Rodgers and Hammerstein
It's a Grand Night For Singing (From "State Fair")
The Sound of Music (From "The Sound of Music")
Some Enchanted Evening (From "South Pacific")
Everybody's Got a Home But Me (From "Pipe Dream")
Hello Young Lovers (From "The King and I")
A Cockeyed Optimist (From "South Pacific")
Love Look Away (From "Flower Drum Song")
It Might As Well Be Spring (From "State Fair")
My Favorite Things (From "The Sound of Music")
Something Wonderful (From "The King and I")
Something Good (From "The Sound of Music")
You'll Never Walk Alone (From "Carousel")
{"copyright_id":"0xc10e30be8859dc519fdb7c99bf789c18fa943022a44b69f4f2f6b97bb78f1c76","isrc":"USA820500066","name":"A Little Less Conversation","registered_at":"2026-06-08T23:02:37Z","spotify_id":"0sJhNtnbHV2UuG0BIm05yx","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 0xc10e30be8859dc519fdb7c99bf789c18fa943022a44b69f4f2f6b97bb78f1c76. 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/0sJhNtnbHV2UuG0BIm05yx.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/0sJhNtnbHV2UuG0BIm05yx.
Mrs. Doubtfire Original Broadway Ensemble
Mrs. Doubtfire (Original Broadway Cast Recording)
{"copyright_id":"0x4f06102be97cef973ad31a5599b34c10a96b0288028c9442cccd1a3d0e0a33bb","isrc":"USSK32243017","name":"What's Wrong With This Picture","registered_at":"2026-06-08T13:21:16Z","spotify_id":"3HlgY1kT6VTPa8ivm2uhdC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f06102be97cef973ad31a5599b34c10a96b0288028c9442cccd1a3d0e0a33bb. 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/3HlgY1kT6VTPa8ivm2uhdC.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/3HlgY1kT6VTPa8ivm2uhdC.
{"copyright_id":"0x4024a18685aa1f9ed6a092f4754e192fec4c2e83b1811f516df2fe0f0bd7410e","isrc":"USSK32243024","name":"The Shape Of Things To Come","registered_at":"2026-06-10T19:28:08Z","spotify_id":"4fyxvwpSQakNxcMHh84Qqg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4024a18685aa1f9ed6a092f4754e192fec4c2e83b1811f516df2fe0f0bd7410e. 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/4fyxvwpSQakNxcMHh84Qqg.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/4fyxvwpSQakNxcMHh84Qqg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde89fe42a788ff625996bee66bafcaa91a06fc16e3e80381671d826e5e4b97e. 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/0GsOgEWapi2AIs9giIlrP6.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/0GsOgEWapi2AIs9giIlrP6.
{"copyright_id":"0x99811897816584876f0e520dd1efcebadc53f9667181af921f0fdd119c769123","isrc":"USSK32243033","name":"As Long As There Is Love, Pt. 1","registered_at":"2026-06-18T18:31:22Z","spotify_id":"3XUdgwywZIqz6sJQZZhjBH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99811897816584876f0e520dd1efcebadc53f9667181af921f0fdd119c769123. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3XUdgwywZIqz6sJQZZhjBH.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/3XUdgwywZIqz6sJQZZhjBH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61507ba7a4091d0cbdc08aa67633e977b7ea52957274df5653d6de769212364. 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/44f0izaEgnddX0jIRIBmfQ.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/44f0izaEgnddX0jIRIBmfQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0e20e469faa8fe4495819e3860fbe7bfabd83211b20055b7c1fa940faf5fa0. 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/40J4zm9S1Qn7QrubcHOn9a.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/40J4zm9S1Qn7QrubcHOn9a.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a993046e16afa7584f47263519270d31b971d8cf49027be5999ea00244bc2c8. 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/6iYrrUURbWWLYBdamuggeK.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/6iYrrUURbWWLYBdamuggeK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d64d00a5879e849163327966599c59ba0dacd266cc695b57625f315609b7eb. 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/1yJkzSKUpfwhrPXuAwVR1X.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/1yJkzSKUpfwhrPXuAwVR1X.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2f7ca5ed6afc878698ebe29641350cfe19f2585f7edb52dc2953c8428484f8. 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/7Cfru4vm9xtj8LgCIdt9gF.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/7Cfru4vm9xtj8LgCIdt9gF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa9cec95082d77437c680cd07599d1f040107ee096cca6199d07dd9429127c0. 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/6aOvaNVoKJ2Txqn8ilRWyo.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/6aOvaNVoKJ2Txqn8ilRWyo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0deefd686fc771864d91663b8c19bbb86071b4735d55647f42431104426fd5c7. 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/2D3p3xyWYwmxbtVtcuykqI.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/2D3p3xyWYwmxbtVtcuykqI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53668e6e1a0aab2250718788b83ec6cd119fdf6b4069ec3c5452788e653c966c. 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/3y7SCMC7nOBqQfQc107dEE.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/3y7SCMC7nOBqQfQc107dEE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed50626ae04df93968175c9f61d476648de79fe6b83d7201d251e4b4a00b8c4. 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/2n8h2iu1FgFiCsP0NijN9L.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/2n8h2iu1FgFiCsP0NijN9L.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2463a852b474729fd8bed1e1d9cc9195c1c716149b6bc99e3f837560aa0db0. 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/1LLUdZGmefJWjXm3kt2qKU.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/1LLUdZGmefJWjXm3kt2qKU.