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 0x39faa560a02e9a3d38c8d3f26d8949308e62a0e16aae401cf5d42845ab24aad6. 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/b4a3a6ed-4565-426b-bd02-6cd201b6d947.json and https://artists.proofprofile.net/proofs/artist/b4a3a6ed-4565-426b-bd02-6cd201b6d947.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x4d7735d25cbf273cf19444ef9e9ff3df6d1f4607c6f2f5c6389de57f2e130f14","isrc":"BCX5C2300025","name":"DENTRO DA HILUX","registered_at":"2026-06-01T10:54:30Z","spotify_id":"3jTyFoGeD3DTu9cnnctMWN","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 0x4d7735d25cbf273cf19444ef9e9ff3df6d1f4607c6f2f5c6389de57f2e130f14. 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/3jTyFoGeD3DTu9cnnctMWN.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/3jTyFoGeD3DTu9cnnctMWN.
{"copyright_id":"0xc1a221f0cd3df5c7853b51e591abbea9f5dcda61321ad0bf55ffa8bb523fdf15","isrc":"BXKG22200173","name":"Chama do Prazer","registered_at":"2026-06-10T17:32:11Z","spotify_id":"730EvUVCUvg9rMX5hWfmLK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a221f0cd3df5c7853b51e591abbea9f5dcda61321ad0bf55ffa8bb523fdf15. 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/730EvUVCUvg9rMX5hWfmLK.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/730EvUVCUvg9rMX5hWfmLK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88303f74aad86a26dd49319ff93e8dbdcd0bee64aaf90d46f7ed671a7eb961e5. 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/7JR91iVwX4v9WboqzSPaEv.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/7JR91iVwX4v9WboqzSPaEv.
{"copyright_id":"0x7f159c531deac8bac0bdf734bb42b2a33d0d17efc6ff6421bc2346dc04f0d88b","isrc":"QZW9M2321682","name":"Ousadia e Alegria - Ao Vivo","registered_at":"2026-06-23T13:57:22Z","spotify_id":"1WmCarQvnuQLdNXx5bm6Ck","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f159c531deac8bac0bdf734bb42b2a33d0d17efc6ff6421bc2346dc04f0d88b. 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/1WmCarQvnuQLdNXx5bm6Ck.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/1WmCarQvnuQLdNXx5bm6Ck.
{"copyright_id":"0x68719fd1b6ebcd97827bd0c8c6a59a2ca5438a00fddc015b4cf17ee70eec6fc9","isrc":"BXKG22302486","name":"Ritmista 1.0","registered_at":"2026-06-01T08:56:23Z","spotify_id":"3ZNjlT5zR0jkEVzSSZCQeJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68719fd1b6ebcd97827bd0c8c6a59a2ca5438a00fddc015b4cf17ee70eec6fc9. 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/3ZNjlT5zR0jkEVzSSZCQeJ.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/3ZNjlT5zR0jkEVzSSZCQeJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd0456d6da08798509a78bb5f9f8eb04fbbc1581d974a68b872b489a79cd5bd. 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/0h7m2GwOZFptFrg7e7tiTn.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/0h7m2GwOZFptFrg7e7tiTn.
{"copyright_id":"0xff55dbe40a7a5f3cbafea839b8bd2efe37189515d1e3fb2219049c626fd8b835","isrc":"QZW9L2398216","name":"Ousadia e Alegria - Ao Vivo","registered_at":"2026-06-07T00:12:12Z","spotify_id":"5zLNaXgP58hMzpdTx5LWfd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff55dbe40a7a5f3cbafea839b8bd2efe37189515d1e3fb2219049c626fd8b835. 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/5zLNaXgP58hMzpdTx5LWfd.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/5zLNaXgP58hMzpdTx5LWfd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a788c670fd0788ee487b013748aee4d71ce1a5e979e8d8942d2901bd936de28. 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/6FllOXq1UDCFDt1V4YvN3K.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/6FllOXq1UDCFDt1V4YvN3K.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f85f87f705c0356c4ec3afa25176909a51746c26862fbbbd66d1993a10212e3. 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/4NrSv0LvdCVEkGdf9GlRVi.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/4NrSv0LvdCVEkGdf9GlRVi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915f827711f4d386dda075933f6bdbaf12ab469de7584f0240a4f138325a885a. 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/0BsPPZsk0aGkP9CEYYfH1G.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/0BsPPZsk0aGkP9CEYYfH1G.
{"copyright_id":"0x162f7b49c68e78cc465d7504a76592f88a8ceec2a309ebc3e00a7ab9c29e9caa","isrc":"BRWMB2201174","name":"Revoada do tubarão 3","registered_at":"2026-06-11T04:54:15Z","spotify_id":"08ecggcf0Bh97CNK2dWYNk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162f7b49c68e78cc465d7504a76592f88a8ceec2a309ebc3e00a7ab9c29e9caa. 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/08ecggcf0Bh97CNK2dWYNk.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/08ecggcf0Bh97CNK2dWYNk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae72b40011104a19830b801fc6e5b55a8189995ca0b0e70871d44977c098556. 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/0qdMBxjvPgcsgE7emfYwss.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/0qdMBxjvPgcsgE7emfYwss.