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 0xc0b224932ffde30a0ed155d7bef4b7abadc0137b703df60164dca5d84a79dd37. 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/fc090a52-a5e1-4098-b8f9-f34f9950498c.json and https://artists.proofprofile.net/proofs/artist/fc090a52-a5e1-4098-b8f9-f34f9950498c.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 0x908b4f242112389aa6700fa851c771d3c259e9640ce9c213dc6b22a8223d6ca7. 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/2bU3gg0M8GGBs7ItBKsJX9.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/2bU3gg0M8GGBs7ItBKsJX9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d93c9d543688bc0a0dbf5a68dddf0138dd67c5d9d0edcb3538984c08dd1f0a. 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/3pMUTmKGA5hWOWpzf82xn0.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/3pMUTmKGA5hWOWpzf82xn0.
{"copyright_id":"0xd728074032beac9e4729f93022da099600b05abf7d7547d05f89a39ff67db7af","isrc":"USSM11408355","name":"Emmylou - Spotify Sessions","registered_at":"2026-06-04T14:29:00Z","spotify_id":"7exdcu9SmgcrZ7hW9ZdcYo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd728074032beac9e4729f93022da099600b05abf7d7547d05f89a39ff67db7af. 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/7exdcu9SmgcrZ7hW9ZdcYo.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/7exdcu9SmgcrZ7hW9ZdcYo.
Palomino Deluxe (Child of Summer Edition)
{"copyright_id":"0x5365cb216441b34964df87d5a3cc025c93ec55aa1d1c3d01f169682e08352d08","isrc":"USSM12304683","name":"Angel - Acoustic String Version","registered_at":"2026-06-08T17:02:38Z","spotify_id":"2qtyj7TOmcHQ5liWb8vOaV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5365cb216441b34964df87d5a3cc025c93ec55aa1d1c3d01f169682e08352d08. 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/2qtyj7TOmcHQ5liWb8vOaV.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/2qtyj7TOmcHQ5liWb8vOaV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8969132302b6432d18ae68c89e9633496eef390a270666c464cf261db1e5e5. 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/3fKg9Up2k4rMBbGgJQnd85.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/3fKg9Up2k4rMBbGgJQnd85.
{"copyright_id":"0x3c930cb72e2cb32db7246566930a8d73a69e4788efc2d556e4126d1fcdd2adb6","isrc":"SEWEE2218701","name":"Come Give Me Love - Live at Benjamin's","registered_at":"2026-06-04T14:49:31Z","spotify_id":"280EWBUjFVjZ0tLHoTZ7DB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c930cb72e2cb32db7246566930a8d73a69e4788efc2d556e4126d1fcdd2adb6. 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/280EWBUjFVjZ0tLHoTZ7DB.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/280EWBUjFVjZ0tLHoTZ7DB.
{"copyright_id":"0xe34ef3726e9564719a2a62d332527c5e065dcd938953ace7cd10e4a0fbcb9bbd","isrc":"USRC12204196","name":"Kids in Love","registered_at":"2026-06-04T06:35:57Z","spotify_id":"5O8DzZiICD3UMKNR6EgXeM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34ef3726e9564719a2a62d332527c5e065dcd938953ace7cd10e4a0fbcb9bbd. 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/5O8DzZiICD3UMKNR6EgXeM.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/5O8DzZiICD3UMKNR6EgXeM.
I Need Love (feat. First Aid Kit) - Live Version
{"copyright_id":"0x0e9cf056a858ba55a4cb6772e69436677e1829a5f33712d71cd9b16cbd821bee","isrc":"USSM12102886","name":"I Need Love (feat. First Aid Kit) - Live Version","registered_at":"2026-06-20T16:05:35Z","spotify_id":"69khRvQgywgLfdnhhObdPD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9cf056a858ba55a4cb6772e69436677e1829a5f33712d71cd9b16cbd821bee. 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/69khRvQgywgLfdnhhObdPD.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/69khRvQgywgLfdnhhObdPD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8969132302b6432d18ae68c89e9633496eef390a270666c464cf261db1e5e5. 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/0dWvZTSPKJgN4VSmTSYt4g.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/0dWvZTSPKJgN4VSmTSYt4g.
{"copyright_id":"0xe34ef3726e9564719a2a62d332527c5e065dcd938953ace7cd10e4a0fbcb9bbd","isrc":"USRC12204196","name":"Kids in Love","registered_at":"2026-06-04T06:35:57Z","spotify_id":"1gpYR1FzbIS0IRbpF3BBmu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34ef3726e9564719a2a62d332527c5e065dcd938953ace7cd10e4a0fbcb9bbd. 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/1gpYR1FzbIS0IRbpF3BBmu.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/1gpYR1FzbIS0IRbpF3BBmu.
{"copyright_id":"0x8f9ed3676b6d660620c2db5aefa93a93a7c50bd84948d7910bcc26448d3aa769","isrc":"QMUY42200073","name":"Cute & Cruel (feat. First Aid Kit)","registered_at":"2026-06-05T11:16:09Z","spotify_id":"48vz1Gd8ayFisvgx5e79yo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9ed3676b6d660620c2db5aefa93a93a7c50bd84948d7910bcc26448d3aa769. 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/48vz1Gd8ayFisvgx5e79yo.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/48vz1Gd8ayFisvgx5e79yo.
{"copyright_id":"0x8f9ed3676b6d660620c2db5aefa93a93a7c50bd84948d7910bcc26448d3aa769","isrc":"QMUY42200073","name":"Cute & Cruel (feat. First Aid Kit)","registered_at":"2026-06-05T11:16:09Z","spotify_id":"4NIEcO0s7YyAN0oeIHQaGY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9ed3676b6d660620c2db5aefa93a93a7c50bd84948d7910bcc26448d3aa769. 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/4NIEcO0s7YyAN0oeIHQaGY.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/4NIEcO0s7YyAN0oeIHQaGY.
{"copyright_id":"0x519e4e49740653540d24cecd97e048afc62cbdb4938523c52a0ee7d1b98aa592","isrc":"GBARL1701377","name":"Saviour (feat. First Aid Kit)","registered_at":"2026-06-04T09:37:30Z","spotify_id":"1bYW7P6Uk83IJU61eozUfE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519e4e49740653540d24cecd97e048afc62cbdb4938523c52a0ee7d1b98aa592. 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/1bYW7P6Uk83IJU61eozUfE.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/1bYW7P6Uk83IJU61eozUfE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e085147aeffce55c84f46de2d6cb04161b33cfa3387040db762a21ed9b4490. 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/1XgEbAIvaaGl9vOufrH6tX.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/1XgEbAIvaaGl9vOufrH6tX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908b4f242112389aa6700fa851c771d3c259e9640ce9c213dc6b22a8223d6ca7. 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/7v4szcxTUgiElOKv0FID07.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/7v4szcxTUgiElOKv0FID07.