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 0x54719330be01572e3697d831ff12b2c97103a5cb6ecf262b151174ba4673b096. 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/1944b5fe-0f3e-4399-8ca8-9cdc59112778.json and https://artists.proofprofile.net/proofs/artist/1944b5fe-0f3e-4399-8ca8-9cdc59112778.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x3fe03c81a47ebe31ee65b5c460b972a7fecaf809c4903f494e0bbd9e429cca3d","isrc":"SE22T1400218","name":"Du gamla, du fria","registered_at":"2026-01-28T18:02:57Z","spotify_id":"3s9Me1iQpUA5moKarzE8rY","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 0x3fe03c81a47ebe31ee65b5c460b972a7fecaf809c4903f494e0bbd9e429cca3d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3s9Me1iQpUA5moKarzE8rY.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/3s9Me1iQpUA5moKarzE8rY.
Hymn - Secretary General Kofi Annan's Prayer for Peace
{"copyright_id":"0x24433ca046714c0c5e71eae011362ad337ea429698eb0ab2748ee874bc5f8549","isrc":"GBUM70708259","name":"Kamen: Requiem for a Soldier","registered_at":"2026-06-28T05:36:28Z","spotify_id":"6dm0KOcMoR6jzKR2Wtb5Pj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24433ca046714c0c5e71eae011362ad337ea429698eb0ab2748ee874bc5f8549. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6dm0KOcMoR6jzKR2Wtb5Pj.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/6dm0KOcMoR6jzKR2Wtb5Pj.
Orchestra del Teatro Comunale di Bologna
The City of Prague Philharmonic Orchestra
Bravest of the Brave - En hyldest til vore soldater
Guitar Concerto for Electric guitar, Rock Band and Orchestra - Commissioned by Eric Clapton: 1st Movement
Guitar Concerto for Electric guitar, Rock Band and Orchestra - Commissioned by Eric Clapton: 2nd Movement
Guitar Concerto for Electric guitar, Rock Band and Orchestra - Commissioned by Eric Clapton: 3rd Movement
Guitar Concerto for Electric guitar, Rock Band and Orchestra - Without guitar: 3rd Movement
{"copyright_id":"0x5cd47662e85463ddf5ce1e50051ddd2d6b3dff02949a0252defca599716755d0","isrc":"USSM19602685","name":"Everything I Do (From \"Robin Hood\")","registered_at":"2026-06-18T14:04:29Z","spotify_id":"4JNSaJUeQMgCuaCfgwn7lB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd47662e85463ddf5ce1e50051ddd2d6b3dff02949a0252defca599716755d0. 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/4JNSaJUeQMgCuaCfgwn7lB.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/4JNSaJUeQMgCuaCfgwn7lB.
Main Titles (From the HBO Miniseries "Band of Brothers" Soundtrack)
Band of Brothers - Original Motion Picture Soundtrack
{"copyright_id":"0x512341ab998ac9756befa6052a3a368f8f1937ab9ba2b68189f526070a86780b","isrc":"USSM10108389","name":"Main Titles (From the HBO Miniseries \"Band of Brothers\" Soundtrack)","registered_at":"2026-06-04T09:38:46Z","spotify_id":"1LcNtS9B22LgIHxd9gTGcV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512341ab998ac9756befa6052a3a368f8f1937ab9ba2b68189f526070a86780b. 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/1LcNtS9B22LgIHxd9gTGcV.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/1LcNtS9B22LgIHxd9gTGcV.
Band of Brothers - Suite One (From the HBO Miniseries "Band of Brothers" Soundtrack)
{"copyright_id":"0x211fe3a3bc4d8690849def7a01232f8593abb26ad4053e6ef03fe7696b10560c","isrc":"USSM10108390","name":"Band of Brothers - Suite One (From the HBO Miniseries \"Band of Brothers\" Soundtrack)","registered_at":"2026-06-05T21:28:51Z","spotify_id":"7EhtFc6RCy6LdrlKfuAB0Z","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211fe3a3bc4d8690849def7a01232f8593abb26ad4053e6ef03fe7696b10560c. 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/7EhtFc6RCy6LdrlKfuAB0Z.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/7EhtFc6RCy6LdrlKfuAB0Z.
Band of Brothers - Suite Two (From the HBO Miniseries "Band of Brothers" Soundtrack)
{"copyright_id":"0x7bc1c15132bc279407bd065b7f046c78425f5e5cd88b9807e7f80227acc741e5","isrc":"USSM10108391","name":"Band of Brothers - Suite Two (From the HBO Miniseries \"Band of Brothers\" Soundtrack)","registered_at":"2026-06-06T10:40:30Z","spotify_id":"0afZX50fvjXE0WKFahBLJK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc1c15132bc279407bd065b7f046c78425f5e5cd88b9807e7f80227acc741e5. 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/0afZX50fvjXE0WKFahBLJK.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/0afZX50fvjXE0WKFahBLJK.
The Mission Begins (From the HBO Miniseries "Band of Brothers" Soundtrack)
{"copyright_id":"0x0026099f98f7c172c5598428e2125485620b2047231adf81cc0fb1472e3e6261","isrc":"USSM10108392","name":"The Mission Begins (From the HBO Miniseries \"Band of Brothers\" Soundtrack)","registered_at":"2026-06-06T10:38:26Z","spotify_id":"4IoqDx6XDIYql4ZMYD4JtI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0026099f98f7c172c5598428e2125485620b2047231adf81cc0fb1472e3e6261. 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/4IoqDx6XDIYql4ZMYD4JtI.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/4IoqDx6XDIYql4ZMYD4JtI.
Swamp (From the HBO Miniseries "Band of Brothers" Soundtrack)
{"copyright_id":"0xfba51349dd0730ea89465b12bb52c79bfb662efadda8f2d5b74b2f2bb81ae988","isrc":"USSM10108393","name":"Swamp (From the HBO Miniseries \"Band of Brothers\" Soundtrack)","registered_at":"2026-06-07T14:28:17Z","spotify_id":"7u30oqoX8TX6J9A4US7fKP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba51349dd0730ea89465b12bb52c79bfb662efadda8f2d5b74b2f2bb81ae988. 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/7u30oqoX8TX6J9A4US7fKP.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/7u30oqoX8TX6J9A4US7fKP.