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 0x7256e9028afff29c39432796282a007b80e692d03f6a6dee143ce730ac007fe1. 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/b03971b1-d714-4f76-86d6-af18bfcefb42.json and https://artists.proofprofile.net/proofs/artist/b03971b1-d714-4f76-86d6-af18bfcefb42.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x6f32f34b015f68aefaf5a5635741c8b1cf35b4f8f49bd86d1cc3a5f31a94a614","isrc":"USSM10005662","name":"Johnny Too Bad","registered_at":"2026-06-25T03:28:10Z","spotify_id":"2HAyXEic2QJpu0LJBvw2cf","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 0x6f32f34b015f68aefaf5a5635741c8b1cf35b4f8f49bd86d1cc3a5f31a94a614. 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/2HAyXEic2QJpu0LJBvw2cf.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/2HAyXEic2QJpu0LJBvw2cf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f8fa382013c50bf61595d07499cc8051b5b25e114f3b4b1c818a94c1811f98. 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/46aGzrtTRBeSG1maJVmsUK.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/46aGzrtTRBeSG1maJVmsUK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88775b750dfd4ba1c9b0b324b8e1444c2f105654f07f24e506c599d64e444f8f. 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/6A3Cym4th8qHdCn7ZcVY6G.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/6A3Cym4th8qHdCn7ZcVY6G.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314e8169cf1e962ae00a043f3a27cca0093085988a76717c905038b7269c25bc. 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/5iImAkMeQ7RCk3TMYAPJyC.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/5iImAkMeQ7RCk3TMYAPJyC.
{"copyright_id":"0x25dbe04d3c7468ab8cdff46babbe448aeb2e1138f1a8ee7cd4cea911b6316c29","isrc":"USSM10503699","name":"The Celebrated Walkin' Blues","registered_at":"2026-06-18T08:44:21Z","spotify_id":"1R5mc9pkvt3ZZ7r8nnnVVR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25dbe04d3c7468ab8cdff46babbe448aeb2e1138f1a8ee7cd4cea911b6316c29. 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/1R5mc9pkvt3ZZ7r8nnnVVR.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/1R5mc9pkvt3ZZ7r8nnnVVR.
She Caught the Katy and Left Me a Mule to Ride
{"copyright_id":"0xdb7dc2958e519d7cd50677a8f1751083db26a788ac376a709f2587e9beef2a4e","isrc":"USSM10004123","name":"She Caught the Katy and Left Me a Mule to Ride","registered_at":"2026-06-11T22:57:07Z","spotify_id":"0c42JkNYZzZTNVWJvIuaRm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7dc2958e519d7cd50677a8f1751083db26a788ac376a709f2587e9beef2a4e. 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/0c42JkNYZzZTNVWJvIuaRm.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/0c42JkNYZzZTNVWJvIuaRm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42014b7bbecc7b4806d6839119a579884d6b23b6259536c4402e18d19b2f16eb. 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/5aBpIqXfktr9SSwyAi8Hlj.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/5aBpIqXfktr9SSwyAi8Hlj.
Going up to the Country, Paint My Mailbox Blue
{"copyright_id":"0xd7aafdcc617d9e8bed027a266ddd962d4f9a49138c8975a21b26bd327fa99ad5","isrc":"USSM10004121","name":"Going up to the Country, Paint My Mailbox Blue","registered_at":"2026-06-27T03:15:42Z","spotify_id":"5802AWZG6iAvFMawiGcoeU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7aafdcc617d9e8bed027a266ddd962d4f9a49138c8975a21b26bd327fa99ad5. 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/5802AWZG6iAvFMawiGcoeU.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/5802AWZG6iAvFMawiGcoeU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9430291a68773be45950bb841e3617889ae44e77edb13b02d57039aae5a64954. 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/6qgnRnNHyGKdX1ncdZ18RO.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/6qgnRnNHyGKdX1ncdZ18RO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630bb4dbdf27018036888f75d4bfc9128a588d8321e09dc3c723d0f6b108a6f2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/29fflNwELe8dHQ2zN4IAGw.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/29fflNwELe8dHQ2zN4IAGw.
{"copyright_id":"0x6d3a85e4af5efd8daab12d02bcd86e7fb66888fffa5b887082e733e5fbb356f2","isrc":"USSM10503712","name":"Fishin' Blues","registered_at":"2026-06-11T23:00:23Z","spotify_id":"4pyzOFTBdYiI2sxsfuohta","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3a85e4af5efd8daab12d02bcd86e7fb66888fffa5b887082e733e5fbb356f2. 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/4pyzOFTBdYiI2sxsfuohta.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/4pyzOFTBdYiI2sxsfuohta.
Ain't Gwine Whistle Dixie (Anymo') - Live
{"copyright_id":"0x565c3867939d61aabd5a418584596d07d45a8ad3578e0fa69a3cad6d161e57ca","isrc":"USSM10503718","name":"Ain't Gwine Whistle Dixie (Anymo') - Live","registered_at":"2026-06-11T23:00:29Z","spotify_id":"0dbb2f7WmurM3jMgioZFFt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565c3867939d61aabd5a418584596d07d45a8ad3578e0fa69a3cad6d161e57ca. 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/0dbb2f7WmurM3jMgioZFFt.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/0dbb2f7WmurM3jMgioZFFt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a106a5ed38f65028215cfce4497901d19b5abfe22ed2c71c0de977e5f44e60. 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/4ZkU8OWDa1LTCsg5ncI6JQ.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/4ZkU8OWDa1LTCsg5ncI6JQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d72d63f22b4a40069d422f523eed6159d98a5b096042fb027e8c4accf9d17c. 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/5M6N3fA7XmseXiPJvIkp7J.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/5M6N3fA7XmseXiPJvIkp7J.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567ac1cb7de43c2f24b3a47c451ff3dac83857935672cb6dc0122ad74f93433b. 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/29yCqXXDp6PE6nq59Ke0I8.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/29yCqXXDp6PE6nq59Ke0I8.
{"copyright_id":"0x477545ab8aa27d4fb271b468ea9ba0a93f6fb3e26c2c12c371a102cf5605fc4b","isrc":"USSM17200368","name":"Cakewalk Into Town","registered_at":"2026-06-21T14:46:50Z","spotify_id":"57V3qFWPxsUB3PTFQbWyDk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477545ab8aa27d4fb271b468ea9ba0a93f6fb3e26c2c12c371a102cf5605fc4b. 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/57V3qFWPxsUB3PTFQbWyDk.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/57V3qFWPxsUB3PTFQbWyDk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50acf41b1564e70964fd65a18f3df7031ad15d56333b4f95a9e45b467ff63494. 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/3E0VKSvZp76kvBU2WwwBul.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/3E0VKSvZp76kvBU2WwwBul.
Mavis Staples I'll Take You There: An All-Star Concert Celebration (Deluxe / Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ba325ebff7b00355129261a9bdaf5b6452ef2697ef655cd636933617832dfd. 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/03qSYwxRCavJccioep27Sx.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/03qSYwxRCavJccioep27Sx.