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 0x94170cfd45cef64516601122dfe0d07c107265c9038324c03fbb02851f7bc7ff. 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/4a9f70f4-118d-4e46-8763-58d04414d3a2.json and https://artists.proofprofile.net/proofs/artist/4a9f70f4-118d-4e46-8763-58d04414d3a2.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 0xda983b8127a38cd46596c8db97f5303b328f53d10be42bf538603edd52c52c6d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0egEr6QBAxFp15elYmTwhg.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/0egEr6QBAxFp15elYmTwhg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89648850051a7331d860aa69e7c2841892cd2b0750f3990c4ef48b89283ee6fa. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2PcRz8eir3FV2IC13wtASu.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/2PcRz8eir3FV2IC13wtASu.
{"copyright_id":"0x2e0deaf12c4e68e0b7ec2ab1d8671b9be1f2a85ad667b14c00b94e6531ee2d32","isrc":"MXUM62000004","name":"Canción Sin Miedo - Versión El Palomar","registered_at":"2026-06-04T08:31:57Z","spotify_id":"2rnARNiqqnVK8WnEQlXh1a","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0deaf12c4e68e0b7ec2ab1d8671b9be1f2a85ad667b14c00b94e6531ee2d32. 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/2rnARNiqqnVK8WnEQlXh1a.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/2rnARNiqqnVK8WnEQlXh1a.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d1c647c9ccbc8d2e6f9e8532950e99a42e9ce5a6284c7fd7d897784fd628d4. 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/661HqoPLor1uUeFH2OqMRG.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/661HqoPLor1uUeFH2OqMRG.
{"copyright_id":"0x9a47bb2fef07417102d1d098aa6263d8ff7403c7d318261aaa9100d217d1448a","isrc":"QM4TW2478348","name":"Most Days (feat. Sofia Campos)","registered_at":"2026-06-23T00:54:15Z","spotify_id":"6nLoQ3rLVVbdprGbIGSqQ3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a47bb2fef07417102d1d098aa6263d8ff7403c7d318261aaa9100d217d1448a. 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/6nLoQ3rLVVbdprGbIGSqQ3.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/6nLoQ3rLVVbdprGbIGSqQ3.