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 0x10d6f348dc4d43f4bc6bcb623647f7afc66620242546a6501e99bda64c8c5c10. 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/cb4003b5-70a6-41ae-b168-c12a5e306993.json and https://artists.proofprofile.net/proofs/artist/cb4003b5-70a6-41ae-b168-c12a5e306993.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 0xf5c42f203707c6cb42725b05066cffbb39c8000f3344bff12452ef588a16e7b5. 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/15FV5VxR9hmIEnOc2SqcKW.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/15FV5VxR9hmIEnOc2SqcKW.
Acoustic Guitar Channel Compilation, Vol..2 (Solo, Duo, Trio & Ensemble)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf26e01b42fa0cd0f2959140c2d2d154a82326d114050784d61bb28e90c7ef66. 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/0JEgkJILHnz4VantY5ILVh.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/0JEgkJILHnz4VantY5ILVh.
Wings (Birdy) - Acoustic Instrumental Version
{"copyright_id":"0xe6c6120739727a019d041a1fbfb5b6efee7d6a80450e261c1a446ccb2a2bef83","isrc":"ITDF61714047","name":"Wings (Birdy) - Acoustic Instrumental Version","registered_at":"2026-06-20T12:17:37Z","spotify_id":"2cNDWSAGvNNiEh51IyeOKs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c6120739727a019d041a1fbfb5b6efee7d6a80450e261c1a446ccb2a2bef83. 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/2cNDWSAGvNNiEh51IyeOKs.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/2cNDWSAGvNNiEh51IyeOKs.
Bella's Lullaby (From "Twilight") - Two Guitars
{"copyright_id":"0x46df21c9641627624df0199676dae40ddb94ff9fbaf4c111c03058cf8476703d","isrc":"ITDF61714037","name":"Bella's Lullaby (From \"Twilight\") - Two Guitars","registered_at":"2026-06-04T09:44:30Z","spotify_id":"2sZ9QjBCivOCUg1eUcpd7j","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46df21c9641627624df0199676dae40ddb94ff9fbaf4c111c03058cf8476703d. 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/2sZ9QjBCivOCUg1eUcpd7j.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/2sZ9QjBCivOCUg1eUcpd7j.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f03a7513f3525d2b54088a131af4faad7044812ec7e51943b84c811f11a457. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5DWlPtv1NV6e6aS5KkxTIT.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/5DWlPtv1NV6e6aS5KkxTIT.
Chillo è nu buono guaglione - Guitar trio
{"copyright_id":"0x57b10ae41dedd2ab523a1c5206ab4c76fa68e236a960255b3e2d365d0e1dd1cc","isrc":"ITDF61714101","name":"Be the One - Guitar Version","registered_at":"2026-06-25T13:39:27Z","spotify_id":"4mCm330sEh6zaD1yZIVeTl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b10ae41dedd2ab523a1c5206ab4c76fa68e236a960255b3e2d365d0e1dd1cc. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4mCm330sEh6zaD1yZIVeTl.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/4mCm330sEh6zaD1yZIVeTl.
{"copyright_id":"0xd40c030ef6b60034f91b23c17fc39db67920faf81aa4f38b0339a0a89e1f9f94","isrc":"ITDF61601001","name":"My Dear Grandpa - Guitar Solo","registered_at":"2026-06-21T03:44:48Z","spotify_id":"7N2aG4Mqo46h0xQI7CBdXi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40c030ef6b60034f91b23c17fc39db67920faf81aa4f38b0339a0a89e1f9f94. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7N2aG4Mqo46h0xQI7CBdXi.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/7N2aG4Mqo46h0xQI7CBdXi.
My Life Is Going On - Acoustic Backing Track
Something Just Like This - Acoustic Backing Track
Vois sur ton chemin - Acoustic backing track
City of Stars (From "La La Land") - Guitar Base
{"copyright_id":"0xbc4796a0061329370c1205dbce1323238cfec5c8fc5ac9724e0e14bc637fc901","isrc":"ITDF61606034","name":"Vivir Mi Vida - Guitar Base","registered_at":"2026-06-20T12:14:03Z","spotify_id":"2JobeB5qFXTpxJZc8BfwJW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4796a0061329370c1205dbce1323238cfec5c8fc5ac9724e0e14bc637fc901. 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/2JobeB5qFXTpxJZc8BfwJW.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/2JobeB5qFXTpxJZc8BfwJW.
Acoustic Guitar Channel Compilation, Vol. 1 [Acoustic Guitar Cover (Duo, Trio, Quartet, Ensemble)]
City of Stars (From "La La Land") - Guitar Duet
Natanael Cano: Bzrp Music Sessions, Vol. 59
Natanael Cano: Bzrp Music Sessions, Vol. 59 - Guitar Version
Natanael Cano: Bzrp Music Sessions, Vol. 59 - Acoustic Version
Gismonti: Agua e Vinho (Arr. for Guitar)
{"copyright_id":"0xa1a95dce5a2558245be3f0551dca10ee914a0fbe50766066556fd6e38550012b","isrc":"ITDF61609115","name":"Agua e Vinho - Arr. for Guitar","registered_at":"2026-06-09T09:36:18Z","spotify_id":"5Xi4AtLpMbBksCkLnvvS3W","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a95dce5a2558245be3f0551dca10ee914a0fbe50766066556fd6e38550012b. 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/5Xi4AtLpMbBksCkLnvvS3W.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/5Xi4AtLpMbBksCkLnvvS3W.