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 0x049b39cb1ff9947ad6c974e1e94691783958fbbabf9249d65918925369d95816. 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/b6e4d4ae-3fdc-4b3a-b961-b23e5f2ea7a3.json and https://artists.proofprofile.net/proofs/artist/b6e4d4ae-3fdc-4b3a-b961-b23e5f2ea7a3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x3889e2c0d25f3219416f827b553ae00bab4f58b208f680ee46d7ca8b546897a2","isrc":"BKCMX2400095","name":"Paraiso das Mulheres","registered_at":"2026-06-05T07:13:08Z","spotify_id":"7Ax7nMBofVnxhXpYy09AlA","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 0x3889e2c0d25f3219416f827b553ae00bab4f58b208f680ee46d7ca8b546897a2. 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/7Ax7nMBofVnxhXpYy09AlA.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/7Ax7nMBofVnxhXpYy09AlA.
{"copyright_id":"0x2ee8afdf87964951962eb4b2a8d92f7021b87806e097a86786a73fc94b76fc38","isrc":"QZWDD2423086","name":"No Beco Do Escurinho","registered_at":"2026-06-27T03:15:58Z","spotify_id":"42ircvWCLlNFUSP2KzI8wB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee8afdf87964951962eb4b2a8d92f7021b87806e097a86786a73fc94b76fc38. 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/42ircvWCLlNFUSP2KzI8wB.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/42ircvWCLlNFUSP2KzI8wB.
{"copyright_id":"0x77f427f0cd3e442d65d6d0f12c7b6f7e8c5fa3a290862d9509b6a38800ba62aa","isrc":"BKCMX2400125","name":"Na Falta de Amor e Carinho","registered_at":"2026-06-10T17:40:47Z","spotify_id":"72YGjiRRCV4lZPZdm5HuyI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f427f0cd3e442d65d6d0f12c7b6f7e8c5fa3a290862d9509b6a38800ba62aa. 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/72YGjiRRCV4lZPZdm5HuyI.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/72YGjiRRCV4lZPZdm5HuyI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8998ecc51138c3f000bbcf946ac3850af30cc50311435b8789ae26e7a4a9049b. 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/3gI7sIDlggyvybJsHesmpM.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/3gI7sIDlggyvybJsHesmpM.
{"copyright_id":"0x1c46d3a3c8f62fdbac4273e6e99a9754ca6cd95a2bcdfd9a59be515bcd941bf1","isrc":"BCWK42400010","name":"Oi tchutchuca","registered_at":"2026-06-04T12:07:46Z","spotify_id":"3Vo1bWVoXTaTDDxp5KXP3u","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c46d3a3c8f62fdbac4273e6e99a9754ca6cd95a2bcdfd9a59be515bcd941bf1. 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/3Vo1bWVoXTaTDDxp5KXP3u.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/3Vo1bWVoXTaTDDxp5KXP3u.
{"copyright_id":"0x9eb900bf72dcc821b9361480c5d1fd05364aa5c0846f0141ea6886847e34aaf5","isrc":"BCWK42300021","name":"Amor de madrugada","registered_at":"2026-06-18T16:20:54Z","spotify_id":"6yeDXeihuBbuaeBDpQX9KV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb900bf72dcc821b9361480c5d1fd05364aa5c0846f0141ea6886847e34aaf5. 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/6yeDXeihuBbuaeBDpQX9KV.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/6yeDXeihuBbuaeBDpQX9KV.
{"copyright_id":"0xc1c91c34e318ff2f2ff2cd70ea2bea8b55f7f0c60ae2a962d97bb7aa29b6397f","isrc":"BCWK42300012","name":"Trompete safado","registered_at":"2026-06-22T01:14:45Z","spotify_id":"183otVM6ndbRuNeqyVHpJ7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c91c34e318ff2f2ff2cd70ea2bea8b55f7f0c60ae2a962d97bb7aa29b6397f. 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/183otVM6ndbRuNeqyVHpJ7.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/183otVM6ndbRuNeqyVHpJ7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca28eec77c84ac88d94d234601ece0c70b5462a71c900445810e9f0fc218ba9. 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/4O8Dh0aKJkdEtvopYNo703.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/4O8Dh0aKJkdEtvopYNo703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9f8205982f18dd4e7b4d8b96d9bac884a64100642d430e32cc43e57b1bd819. 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/6yg8MtjISJ7tKbfqnzJleA.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/6yg8MtjISJ7tKbfqnzJleA.
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