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 0x4a29e2be6ba6bab646c936e400c438beb0685bae91cafa1f7470e3f67d883e23. 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/6c036c05-8b43-4d90-a7f1-a6d738311591.json and https://artists.proofprofile.net/proofs/artist/6c036c05-8b43-4d90-a7f1-a6d738311591.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bellas Finals: Price Tag/Don’t You (Forget About Me)/Give Me Everything/Just The Way You Are/Party In The U.S.A./Turn The Beat Around
{"copyright_id":"0x833822a09878e30e5c9131abaaa9abbb3896d06554561614790d67a840dae0f0","isrc":"USUM71209197","name":"Bellas Finals: Price Tag/Don’t You (Forget About Me)/Give Me Everything/Just The Way You Are/Party In The U.S.A./Turn The Beat Around","registered_at":"2026-06-01T22:40:45Z","spotify_id":"5DnDWdt25emVC9CLUi3Iku","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 0x833822a09878e30e5c9131abaaa9abbb3896d06554561614790d67a840dae0f0. 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/5DnDWdt25emVC9CLUi3Iku.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/5DnDWdt25emVC9CLUi3Iku.
Riff Off: Mickey/Like A Virgin/Hit Me With Your Best Shot/S&M/Let’s Talk About Sex/I’ll Make Love To You/Feels Like The First Time/No Diggity
{"copyright_id":"0xc696e2fe7624dffd204acfcf676b2ecae17ef718d08fae4f367cd9482c5e4c53","isrc":"USUM71209199","name":"Riff Off: Mickey/Like A Virgin/Hit Me With Your Best Shot/S&M/Let’s Talk About Sex/I’ll Make Love To You/Feels Like The First Time/No Diggity","registered_at":"2026-06-02T01:14:12Z","spotify_id":"6Gds0xbRf66IPJ3Qo0pmPL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc696e2fe7624dffd204acfcf676b2ecae17ef718d08fae4f367cd9482c5e4c53. 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/6Gds0xbRf66IPJ3Qo0pmPL.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/6Gds0xbRf66IPJ3Qo0pmPL.
Riff Off - From "Pitch Perfect 2" Soundtrack
Pitch Perfect 2 (Original Motion Picture Soundtrack)
{"copyright_id":"0x5a8f166c5cd1b8913157cedd05b212cce119bd7bdaaba1f1e63cd1bd72c84d56","isrc":"USUM71504642","name":"Riff Off - From \"Pitch Perfect 2\" Soundtrack","registered_at":"2026-06-04T07:40:21Z","spotify_id":"5dhsuaGYQpEhXsOQsbLL7s","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8f166c5cd1b8913157cedd05b212cce119bd7bdaaba1f1e63cd1bd72c84d56. 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/5dhsuaGYQpEhXsOQsbLL7s.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/5dhsuaGYQpEhXsOQsbLL7s.
Pool Mashup: Just The Way You Are/Just A Dream
{"copyright_id":"0x5401b724adbc86a4da28fae26b1258f499d20b2d9bc9b68ea9af3d3e7a9b2cd3","isrc":"USUM71209200","name":"Pool Mashup: Just The Way You Are/Just A Dream","registered_at":"2026-06-04T06:42:05Z","spotify_id":"3KTqBGgBfT7zzHSSj0gvP5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5401b724adbc86a4da28fae26b1258f499d20b2d9bc9b68ea9af3d3e7a9b2cd3. 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/3KTqBGgBfT7zzHSSj0gvP5.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/3KTqBGgBfT7zzHSSj0gvP5.
World Championship Finale 2 - From "Pitch Perfect 2" Soundtrack
{"copyright_id":"0x9453cebf7dea02bb804d974cf2c05ed376d51f0b78930e410ea29f3466be112c","isrc":"USUM71504650","name":"World Championship Finale 2 - From \"Pitch Perfect 2\" Soundtrack","registered_at":"2026-06-04T08:36:01Z","spotify_id":"3Ls7kkmVLU6MEqpB7lB3KS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9453cebf7dea02bb804d974cf2c05ed376d51f0b78930e410ea29f3466be112c. 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/3Ls7kkmVLU6MEqpB7lB3KS.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/3Ls7kkmVLU6MEqpB7lB3KS.
Kennedy Center Performance - From "Pitch Perfect 2" Soundtrack
{"copyright_id":"0xdac01a23bc5cd8d5566f3984402de794fb0273592484f71441d59d5a6636b032","isrc":"USUM71504638","name":"Kennedy Center Performance - From \"Pitch Perfect 2\" Soundtrack","registered_at":"2026-06-04T10:53:52Z","spotify_id":"7Gzo2I7jLQyvhGTZrkFAhM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac01a23bc5cd8d5566f3984402de794fb0273592484f71441d59d5a6636b032. 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/7Gzo2I7jLQyvhGTZrkFAhM.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/7Gzo2I7jLQyvhGTZrkFAhM.
Back To Basics - From "Pitch Perfect 2" Soundtrack
{"copyright_id":"0x0c329668cef30b97f2547784dfb038029a55ee495ea30ee2cbd6106c3722db71","isrc":"USUM71504645","name":"Back To Basics - From \"Pitch Perfect 2\" Soundtrack","registered_at":"2026-06-04T13:02:32Z","spotify_id":"7dKwAcCco3sF1l6T4oIufU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c329668cef30b97f2547784dfb038029a55ee495ea30ee2cbd6106c3722db71. 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/7dKwAcCco3sF1l6T4oIufU.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/7dKwAcCco3sF1l6T4oIufU.
Cups (“When I’m Gone”) - Campfire Version
{"copyright_id":"0xb77607798c4b3b0cb19ca0c0e1e3324dcd248bbbea8c60e1cdcb2533800803a6","isrc":"USUM71504646","name":"Cups (“When I’m Gone”) - Campfire Version","registered_at":"2026-06-04T15:05:07Z","spotify_id":"6EZCcPc37ZmWuFJBE2Y0wc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77607798c4b3b0cb19ca0c0e1e3324dcd248bbbea8c60e1cdcb2533800803a6. 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/6EZCcPc37ZmWuFJBE2Y0wc.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/6EZCcPc37ZmWuFJBE2Y0wc.
Convention Performance - From "Pitch Perfect 2" Soundtrack
{"copyright_id":"0xae76da35582ff8884ff5f64414af8d02634093f41e1904226c4afc7d0fe689d5","isrc":"USUM71504644","name":"Convention Performance - From \"Pitch Perfect 2\" Soundtrack","registered_at":"2026-06-04T15:06:11Z","spotify_id":"55x3cXbcUyKx7svfUJwhaJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae76da35582ff8884ff5f64414af8d02634093f41e1904226c4afc7d0fe689d5. 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/55x3cXbcUyKx7svfUJwhaJ.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/55x3cXbcUyKx7svfUJwhaJ.
Pitch Perfect 2 - Special Edition (Original Motion Picture Soundtrack)
{"copyright_id":"0xdac01a23bc5cd8d5566f3984402de794fb0273592484f71441d59d5a6636b032","isrc":"USUM71504638","name":"Kennedy Center Performance - From \"Pitch Perfect 2\" Soundtrack","registered_at":"2026-06-04T10:53:52Z","spotify_id":"379pQhTWVBdSEe8cfUmlHy","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac01a23bc5cd8d5566f3984402de794fb0273592484f71441d59d5a6636b032. 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/379pQhTWVBdSEe8cfUmlHy.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/379pQhTWVBdSEe8cfUmlHy.
{"copyright_id":"0x5a8f166c5cd1b8913157cedd05b212cce119bd7bdaaba1f1e63cd1bd72c84d56","isrc":"USUM71504642","name":"Riff Off - From \"Pitch Perfect 2\" Soundtrack","registered_at":"2026-06-04T07:40:21Z","spotify_id":"5RGFGWglZ2zRDWXOK7HyNq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8f166c5cd1b8913157cedd05b212cce119bd7bdaaba1f1e63cd1bd72c84d56. 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/5RGFGWglZ2zRDWXOK7HyNq.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/5RGFGWglZ2zRDWXOK7HyNq.
{"copyright_id":"0xae76da35582ff8884ff5f64414af8d02634093f41e1904226c4afc7d0fe689d5","isrc":"USUM71504644","name":"Convention Performance - From \"Pitch Perfect 2\" Soundtrack","registered_at":"2026-06-04T15:06:11Z","spotify_id":"43iACrqE8E571ZUpb6QD7V","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae76da35582ff8884ff5f64414af8d02634093f41e1904226c4afc7d0fe689d5. 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/43iACrqE8E571ZUpb6QD7V.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/43iACrqE8E571ZUpb6QD7V.
{"copyright_id":"0x0c329668cef30b97f2547784dfb038029a55ee495ea30ee2cbd6106c3722db71","isrc":"USUM71504645","name":"Back To Basics - From \"Pitch Perfect 2\" Soundtrack","registered_at":"2026-06-04T13:02:32Z","spotify_id":"44xQqtGgjixgB0gnomttKX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c329668cef30b97f2547784dfb038029a55ee495ea30ee2cbd6106c3722db71. 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/44xQqtGgjixgB0gnomttKX.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/44xQqtGgjixgB0gnomttKX.
{"copyright_id":"0xb77607798c4b3b0cb19ca0c0e1e3324dcd248bbbea8c60e1cdcb2533800803a6","isrc":"USUM71504646","name":"Cups (“When I’m Gone”) - Campfire Version","registered_at":"2026-06-04T15:05:07Z","spotify_id":"40Et6sz0kPepkCcas9YxR8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77607798c4b3b0cb19ca0c0e1e3324dcd248bbbea8c60e1cdcb2533800803a6. 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/40Et6sz0kPepkCcas9YxR8.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/40Et6sz0kPepkCcas9YxR8.
{"copyright_id":"0x9453cebf7dea02bb804d974cf2c05ed376d51f0b78930e410ea29f3466be112c","isrc":"USUM71504650","name":"World Championship Finale 2 - From \"Pitch Perfect 2\" Soundtrack","registered_at":"2026-06-04T08:36:01Z","spotify_id":"1FsQOGxV10cMHiwmgdLg6x","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9453cebf7dea02bb804d974cf2c05ed376d51f0b78930e410ea29f3466be112c. 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/1FsQOGxV10cMHiwmgdLg6x.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/1FsQOGxV10cMHiwmgdLg6x.
Jungle - From "Pitch Perfect 2" Soundtrack
{"copyright_id":"0x958b7bfda151b9af9e7f771d6bd68b05bac90ad3be49b838a858c27424d21555","isrc":"USUM71510826","name":"Jungle - From \"Pitch Perfect 2\" Soundtrack","registered_at":"2026-06-06T09:26:34Z","spotify_id":"6XBJS8uKboEGRgPwVGzjFk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958b7bfda151b9af9e7f771d6bd68b05bac90ad3be49b838a858c27424d21555. 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/6XBJS8uKboEGRgPwVGzjFk.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/6XBJS8uKboEGRgPwVGzjFk.