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 0x82150adaa73497be10c829cd6f5b1c476482b24d0bc31215e9c9a9f0f6c116e5. 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/bbc127d1-7403-4d50-a5fa-f4e7139a0692.json and https://artists.proofprofile.net/proofs/artist/bbc127d1-7403-4d50-a5fa-f4e7139a0692.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 0x479df7ea75e5e1a0118f4b9e94880238b9e29ec2515a01670c71388909025232. 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/0tsXEOYAl5E1RviMAI4qm3.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/0tsXEOYAl5E1RviMAI4qm3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59231c0f41ff1862fbd5a2bdc681a3e437598fb5715b1e475e7f878659535908. 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/2fgNWPy2VJ3rsIhyEwWO5l.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/2fgNWPy2VJ3rsIhyEwWO5l.
{"copyright_id":"0x1b4c1eb6d7c5b761aca3d2a4d7e9b40643517c5ad11b47c9a90faf93147910f0","isrc":"UKKBA2400001","name":"For The Moment","registered_at":"2026-06-07T19:28:08Z","spotify_id":"7wNH4shysRETKMvamekJGo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4c1eb6d7c5b761aca3d2a4d7e9b40643517c5ad11b47c9a90faf93147910f0. 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/7wNH4shysRETKMvamekJGo.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/7wNH4shysRETKMvamekJGo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19e94b9b79b74a378924198e8848c35eefdd3c3540d481d08e264dd7c7eedbf. 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/2YasD6q9r9r6aSY3aFipnk.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/2YasD6q9r9r6aSY3aFipnk.
{"copyright_id":"0x42ce30ef2b5ed499178321e02a7e91a52262b5cad6b3f52e589a4d67ae40a9ca","isrc":"NL4WT2400093","name":"The Crosses We Bear","registered_at":"2026-06-20T04:34:07Z","spotify_id":"3v1kFGlUk7JbYTw0y3bBrf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ce30ef2b5ed499178321e02a7e91a52262b5cad6b3f52e589a4d67ae40a9ca. 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/3v1kFGlUk7JbYTw0y3bBrf.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/3v1kFGlUk7JbYTw0y3bBrf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081ae847c6e76c8ff81580366448e3dd5a415a2a269b9767d116e2e8b1ca9e72. 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/5lZ4G4UK7SdixIkLztvcao.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/5lZ4G4UK7SdixIkLztvcao.
{"copyright_id":"0x465cefb14ebb81d72d290d704c0726acee66d646ea830f2b37b6ae75aa18e788","isrc":"QMBZ92317966","name":"Words Unspoken","registered_at":"2026-06-05T20:38:22Z","spotify_id":"6p0chl2cQdzexr6HKHhbta","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465cefb14ebb81d72d290d704c0726acee66d646ea830f2b37b6ae75aa18e788. 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/6p0chl2cQdzexr6HKHhbta.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/6p0chl2cQdzexr6HKHhbta.
{"copyright_id":"0xe7809a9f35a14d701d6a14b68da9251c566e0596a09b825eba1833109dc00bbd","isrc":"QMBZ92317967","name":"A Fleeting Memory","registered_at":"2026-06-08T17:40:27Z","spotify_id":"2nPksrpUsuazEkI1Ntpawz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7809a9f35a14d701d6a14b68da9251c566e0596a09b825eba1833109dc00bbd. 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/2nPksrpUsuazEkI1Ntpawz.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/2nPksrpUsuazEkI1Ntpawz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cef101c09e3a6491dfe3deb2056497f9595a56066c00359cb48a4e54054403. 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/078JEeMJUKUZxjLzLju13O.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/078JEeMJUKUZxjLzLju13O.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14454be91d79385fd05d5538edcc866fd1a630049ee2b53318aa93608df13022. 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/0kijSPgMw8MJ6DTUAg7cTp.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/0kijSPgMw8MJ6DTUAg7cTp.
{"copyright_id":"0x19ecb021c505e7d49cefc123ca61a9824869b579e82a07fcfc5d6f824a390a3d","isrc":"NL4WT2400366","name":"What Child Is This","registered_at":"2026-06-24T10:06:12Z","spotify_id":"6GCGiXSAB2qHkvyQmsEU8h","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ecb021c505e7d49cefc123ca61a9824869b579e82a07fcfc5d6f824a390a3d. 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/6GCGiXSAB2qHkvyQmsEU8h.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/6GCGiXSAB2qHkvyQmsEU8h.