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 0x305240f6401994ebcd8569bddf9c276024a6c1ec055790841b0b87424af70721. 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/b7d0b875-3558-4c1e-a928-498987c66032.json and https://artists.proofprofile.net/proofs/artist/b7d0b875-3558-4c1e-a928-498987c66032.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x54babda2a20437426fd21a6cbcf1ce83afaa2325684728645f9eacc6c52a7beb","isrc":"DEA622302610","name":"HANDY BRENNT","registered_at":"2026-06-04T16:47:46Z","spotify_id":"7DxQodUSqQ5rTkJB8EWs03","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 0x54babda2a20437426fd21a6cbcf1ce83afaa2325684728645f9eacc6c52a7beb. 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/7DxQodUSqQ5rTkJB8EWs03.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/7DxQodUSqQ5rTkJB8EWs03.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b2b2920c9dc95330f9d4f2f8e5627512bb0ea9d3f5ae99354e84db7e48a4b8. 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/5EfwhoiS18R1zjZmW4y6PE.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/5EfwhoiS18R1zjZmW4y6PE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5420893c6dec72da786147128fa33372f288cbfb808868a3c53de983cb45f89. 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/3cqaIxLKeIp6pqhwdc16Hk.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/3cqaIxLKeIp6pqhwdc16Hk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54babda2a20437426fd21a6cbcf1ce83afaa2325684728645f9eacc6c52a7beb. 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/5yT78n7O1j5q7ZVhW4AbKt.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/5yT78n7O1j5q7ZVhW4AbKt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4128b713090a74b546f7e3a4f6a61c1ea440ac3a4c7a9a471a07ff37d2745c8f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1L4UaZtcp2ja195z6k8MGK.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/1L4UaZtcp2ja195z6k8MGK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7b2cf6d86dca2184f0d0323a6f7532ddc9390a97bdb657a95f52935926a8ca. 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/3qVZAbIBByJD44wB4SjWKy.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/3qVZAbIBByJD44wB4SjWKy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d04f4860288a8a37dd71445c979a587e1fce32725ef3f50d205d35d3f5ab6ac. 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/6J9342aUdkNdwIb6VCbKKw.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/6J9342aUdkNdwIb6VCbKKw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02c25edb6d62d2c67908fbcb6768b5a3ab1af4e7d84f3a3c9b351064bda85ce. 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/0793P18ErP5HexR8jMm0nu.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/0793P18ErP5HexR8jMm0nu.