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 0xd060bbdd3f4d875d477768b0eb6a289e5db86554db427ec67583a79c3e4b1bc4. 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/04ac1644-d10b-4503-a891-8dfdfbaf0b70.json and https://artists.proofprofile.net/proofs/artist/04ac1644-d10b-4503-a891-8dfdfbaf0b70.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 0x85039a76f8181a092d00b73e9e77854e7c340c8a225f55f99ed1d08750eb42d8. 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/5kqIPrATaCc2LqxVWzQGbk.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/5kqIPrATaCc2LqxVWzQGbk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4823788fc75a60892c21979509d27afe9c475794a00648635e864fe40663be. 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/3Vq1gRj4U2HQ4uLBbT9y9U.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/3Vq1gRj4U2HQ4uLBbT9y9U.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7693b9b10b8730964eb4b6065003267dba5e364f131563a32299abd15ae030. 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/3xi7d2yGx09UKMAAr7A3az.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/3xi7d2yGx09UKMAAr7A3az.
{"copyright_id":"0x7c3bb81ba8c34e67a31de762ff4b06b6dd1d9d2c7b33b5eb0fc44512ebe2155c","isrc":"USWB11801972","name":"Not A Damn Thing Changed","registered_at":"2026-06-04T16:37:11Z","spotify_id":"5vph4KmP15IRBLRPPsLnRo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3bb81ba8c34e67a31de762ff4b06b6dd1d9d2c7b33b5eb0fc44512ebe2155c. 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/5vph4KmP15IRBLRPPsLnRo.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/5vph4KmP15IRBLRPPsLnRo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd836e478604c7e8e6236d8cb01eb758970367492c0b48c42e2d835ba838d5b. 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/0zBceU1TdEwc7tiPHamPv7.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/0zBceU1TdEwc7tiPHamPv7.
You’re Not The Only One (Redemption Song)
{"copyright_id":"0x294f023db9ec7dcab4c2ca18eac1d30a045bc025e244bb922183e4f83da9f1f7","isrc":"USWB11801974","name":"You’re Not The Only One (Redemption Song)","registered_at":"2026-06-06T02:03:30Z","spotify_id":"6ZZcEpdRmcgYX1rgBW7m7z","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294f023db9ec7dcab4c2ca18eac1d30a045bc025e244bb922183e4f83da9f1f7. 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/6ZZcEpdRmcgYX1rgBW7m7z.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/6ZZcEpdRmcgYX1rgBW7m7z.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94efe94b1307c39ec994fb90f38634bf040a4ab883cbd1d4b987ad03702d184. 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/0OCRwXbQRdOZ1OtB4Imsp1.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/0OCRwXbQRdOZ1OtB4Imsp1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a0d77884b296a2c698f3d57c3628dcdcfc1653f2fd4377bbb6abcef6866242. 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/2MXUGxXmbI7z13MCPm2fN1.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/2MXUGxXmbI7z13MCPm2fN1.
{"copyright_id":"0xfda173f88604edc5e4202f73a901bdf61a098da05fdef86fb1f46dc700f9f282","isrc":"USWB11801976","name":"Stick Around","registered_at":"2026-06-05T20:41:56Z","spotify_id":"2FjrL6kcEegGAh8GKzmapi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda173f88604edc5e4202f73a901bdf61a098da05fdef86fb1f46dc700f9f282. 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/2FjrL6kcEegGAh8GKzmapi.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/2FjrL6kcEegGAh8GKzmapi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f22eab9049c316eb3ca3fe4494aa7f827e225e468f9e9a31a11f3c8cdd83d0b. 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/33v8x9hrccmn9y8vcvZEtr.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/33v8x9hrccmn9y8vcvZEtr.
{"copyright_id":"0xadb77f36ed40b389942bb69376cecd31c3428a6dda5ed733d49bad24772a2da3","isrc":"USWB11801978","name":"Everything That Isn't Me","registered_at":"2026-06-06T08:42:50Z","spotify_id":"6xSSvbqFj0NuuFcpmhrb8o","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb77f36ed40b389942bb69376cecd31c3428a6dda5ed733d49bad24772a2da3. 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/6xSSvbqFj0NuuFcpmhrb8o.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/6xSSvbqFj0NuuFcpmhrb8o.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf075c86d3383bca6e0ade6f06a2d59150d0c204947efc8eb57e22813ed170dc9. 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/6EAvFWBoSgq5f9tUZnLO8i.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/6EAvFWBoSgq5f9tUZnLO8i.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7af83405d87c0a4914568f8c7041c3280def56cb12d3524948271e8a1000b08. 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/36R0Fe5FNyzzSrEY6T1BPV.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/36R0Fe5FNyzzSrEY6T1BPV.
{"copyright_id":"0xf0cbd2867ae9a3af6728cfc4a11b1a5ccbf95c90d380ac37f869a45e57f19b32","isrc":"USRC12203707","name":"Fever (feat. Lukas Graham)","registered_at":"2026-06-04T12:20:25Z","spotify_id":"1pMyakalAHUncowgjx99ke","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cbd2867ae9a3af6728cfc4a11b1a5ccbf95c90d380ac37f869a45e57f19b32. 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/1pMyakalAHUncowgjx99ke.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/1pMyakalAHUncowgjx99ke.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94efe94b1307c39ec994fb90f38634bf040a4ab883cbd1d4b987ad03702d184. 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/3id2EVGKc3eFAMn9nFnB0r.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/3id2EVGKc3eFAMn9nFnB0r.
{"copyright_id":"0xf0cbd2867ae9a3af6728cfc4a11b1a5ccbf95c90d380ac37f869a45e57f19b32","isrc":"USRC12203707","name":"Fever (feat. Lukas Graham)","registered_at":"2026-06-04T12:20:25Z","spotify_id":"5tXDj9RcCvE0G7sWLlLZDB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cbd2867ae9a3af6728cfc4a11b1a5ccbf95c90d380ac37f869a45e57f19b32. 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/5tXDj9RcCvE0G7sWLlLZDB.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/5tXDj9RcCvE0G7sWLlLZDB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ee9daeb86021cc5d6cd834d8974f7d41df05cc655b4adfe8af023331e36f4e. 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/2pSFzEqskHjtDVcu2ZpN6E.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/2pSFzEqskHjtDVcu2ZpN6E.
{"copyright_id":"0x7a5b59f12f0bdda5e7d827a02531b3acf8d13074f4fff946c821a44e3cd0df45","isrc":"USWB11600675","name":"7 Years - Night Moves Remix","registered_at":"2026-06-06T09:11:38Z","spotify_id":"4XMrjp9Q3mdjlOyHZWHVPf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5b59f12f0bdda5e7d827a02531b3acf8d13074f4fff946c821a44e3cd0df45. 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/4XMrjp9Q3mdjlOyHZWHVPf.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/4XMrjp9Q3mdjlOyHZWHVPf.
My Little Pony: The Movie (Original Motion Picture Soundtrack)
{"copyright_id":"0xbd7c336a74ee50a5c5e3fd2879532d73d7cb3759ed38eaffa3e793907bffca77","isrc":"USWB11701563","name":"Off to See the World","registered_at":"2026-06-07T06:37:48Z","spotify_id":"3P11IVTBHzMIMOHQe0dvaP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7c336a74ee50a5c5e3fd2879532d73d7cb3759ed38eaffa3e793907bffca77. 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/3P11IVTBHzMIMOHQe0dvaP.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/3P11IVTBHzMIMOHQe0dvaP.
{"copyright_id":"0x215247ffa738e27ecbeba9987d2599eb5b5e7101425a1eff2918f3aeb91d6a17","isrc":"DKUM71400182","name":"Happy Home - Broiler Remix","registered_at":"2026-06-07T11:24:28Z","spotify_id":"0fWanbwwc3rPswxcZgxA1Y","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215247ffa738e27ecbeba9987d2599eb5b5e7101425a1eff2918f3aeb91d6a17. 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/0fWanbwwc3rPswxcZgxA1Y.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/0fWanbwwc3rPswxcZgxA1Y.