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 0x27be2b51d3a6ac245e47089829fa59d717e12da1471b8a6a1e0db06aa852d552. 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/7330c413-23f9-43e4-a9da-0b047b68728c.json and https://artists.proofprofile.net/proofs/artist/7330c413-23f9-43e4-a9da-0b047b68728c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x2ef415852c0bbc25df3d962bf196424ade06f9b065d0d9662ba16132542aa87f","isrc":"USLZJ2331552","name":"Stay Right Here Until Morning","registered_at":"2026-06-22T13:35:48Z","spotify_id":"1G3PUN2xuhLytcQ8gzyO2s","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 0x2ef415852c0bbc25df3d962bf196424ade06f9b065d0d9662ba16132542aa87f. 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/1G3PUN2xuhLytcQ8gzyO2s.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/1G3PUN2xuhLytcQ8gzyO2s.
{"copyright_id":"0x2ef415852c0bbc25df3d962bf196424ade06f9b065d0d9662ba16132542aa87f","isrc":"USLZJ2331552","name":"Stay Right Here Until Morning","registered_at":"2026-06-22T13:35:48Z","spotify_id":"0HYQS8bUDZR0Wz3UDKOF5A","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef415852c0bbc25df3d962bf196424ade06f9b065d0d9662ba16132542aa87f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0HYQS8bUDZR0Wz3UDKOF5A.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/0HYQS8bUDZR0Wz3UDKOF5A.
{"copyright_id":"0x28b0ea603ccff420673745d51a599be08b7fb0720de1873a5d5b9dba53bbf092","isrc":"QZWV32447959","name":"Shape In The Waves","registered_at":"2026-06-18T20:39:31Z","spotify_id":"1VKHknDaqbyqEIfnJU6aU1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b0ea603ccff420673745d51a599be08b7fb0720de1873a5d5b9dba53bbf092. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1VKHknDaqbyqEIfnJU6aU1.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/1VKHknDaqbyqEIfnJU6aU1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f47e177101f7b859a97685db2e3ad5101698acbc942a3cdd06cca9f8eb8719. 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/7vZpAhMo99MFu7lyTxKSYJ.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/7vZpAhMo99MFu7lyTxKSYJ.
{"copyright_id":"0x2ef415852c0bbc25df3d962bf196424ade06f9b065d0d9662ba16132542aa87f","isrc":"USLZJ2331552","name":"Stay Right Here Until Morning","registered_at":"2026-06-22T13:35:48Z","spotify_id":"76KALr24xlLlUK5XIAwdm2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef415852c0bbc25df3d962bf196424ade06f9b065d0d9662ba16132542aa87f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/76KALr24xlLlUK5XIAwdm2.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/76KALr24xlLlUK5XIAwdm2.
Indie / Pop / Folk Compilation - January 2025 (alexrainbirdmusic)
{"copyright_id":"0x28b0ea603ccff420673745d51a599be08b7fb0720de1873a5d5b9dba53bbf092","isrc":"QZWV32447959","name":"Shape in the Waves","registered_at":"2026-06-18T20:39:31Z","spotify_id":"2YpuSVyBgtwPOzNcpMa5sB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b0ea603ccff420673745d51a599be08b7fb0720de1873a5d5b9dba53bbf092. 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/2YpuSVyBgtwPOzNcpMa5sB.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/2YpuSVyBgtwPOzNcpMa5sB.