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 0xe90f0f8cacc7a64147cfce08ac816f8cb9814da33ebd205ae48f15d518e564bd. 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/e55e24c2-7e8e-4c82-bda8-48922339e55e.json and https://artists.proofprofile.net/proofs/artist/e55e24c2-7e8e-4c82-bda8-48922339e55e.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 0x67469ee96e375b5fd4efb09fe5c2f4c39522677f5fdb13587f78b048178b7630. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/13R1o5dBRjxooddKlm4P2J.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/13R1o5dBRjxooddKlm4P2J.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d34bb0dceb76daf022cb9df8bc769ae0a4dc483341f3a883b13bbe9d378d5d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4MCSmhpsuhFaNrgPnPGQV7.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/4MCSmhpsuhFaNrgPnPGQV7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a65f73972bc24d395e517d411250b4813e6d177dc3a579a2ceba1b7ccd232fa. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0hUSUvfSACTDcmlRlysqla.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/0hUSUvfSACTDcmlRlysqla.
Gosto Mais Do Que Lasanha - Reggae Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684e1e1b133cdd0749c7776b677675b80704a8011da575246486b19ee0a05f9a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2iZQ439ALA5OakkV57utWz.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/2iZQ439ALA5OakkV57utWz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7ceb197d6cce65e385f0c72c4588d254b117a9f6325eca43164152291d6cd4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/17wkXkuwRqjXftCpCJ1b81.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/17wkXkuwRqjXftCpCJ1b81.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d7aae06b0ca7a9b08cf99a011cac93c8179c7c59b03177733ac0bf472767d8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3sJomly1SRPxkIYKIfu6On.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/3sJomly1SRPxkIYKIfu6On.
{"copyright_id":"0x9f3d4d276281e20cfbd0d77fad7ae95bfc57782efa26b6c866877b0ef03be3fa","isrc":"BRPK11300006","name":"Quem É","registered_at":"2026-06-18T00:48:28Z","spotify_id":"2O8vlrP2qlxVC1zRXvdLTq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3d4d276281e20cfbd0d77fad7ae95bfc57782efa26b6c866877b0ef03be3fa. 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/2O8vlrP2qlxVC1zRXvdLTq.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/2O8vlrP2qlxVC1zRXvdLTq.
{"copyright_id":"0xf05169ba79f9da5a6ed8db91c5b0aeb3b9afc6210c44c8e1182838fbe8969776","isrc":"BXG6R2400437","name":"Papo De Quebrada","registered_at":"2026-06-08T03:16:50Z","spotify_id":"4kPFPvd5NqQT5QdeJFzXB1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05169ba79f9da5a6ed8db91c5b0aeb3b9afc6210c44c8e1182838fbe8969776. 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/4kPFPvd5NqQT5QdeJFzXB1.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/4kPFPvd5NqQT5QdeJFzXB1.
{"copyright_id":"0xf05169ba79f9da5a6ed8db91c5b0aeb3b9afc6210c44c8e1182838fbe8969776","isrc":"BXG6R2400437","name":"Papo De Quebrada","registered_at":"2026-06-08T03:16:50Z","spotify_id":"6yhcM91GX4DbTKrDARWnB5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05169ba79f9da5a6ed8db91c5b0aeb3b9afc6210c44c8e1182838fbe8969776. 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/6yhcM91GX4DbTKrDARWnB5.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/6yhcM91GX4DbTKrDARWnB5.
{"copyright_id":"0x5a5ea0984e86c119ad7ed38fda9c12cd83c4b1a6d5a467f8d9dbc219b594e4e0","isrc":"GBLFP2504755","name":"Curtindo a Vontade","registered_at":"2026-06-24T05:00:47Z","spotify_id":"0flKH4I0pkDWpZzPOxI1qp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5ea0984e86c119ad7ed38fda9c12cd83c4b1a6d5a467f8d9dbc219b594e4e0. 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/0flKH4I0pkDWpZzPOxI1qp.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/0flKH4I0pkDWpZzPOxI1qp.