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 0x6684927dba8881f2690828d0b55107825aa8b824072c1f4873ff4a2f66146c9c. 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/944e18b5-ea99-4e8b-b6c5-ec6e7e725d83.json and https://artists.proofprofile.net/proofs/artist/944e18b5-ea99-4e8b-b6c5-ec6e7e725d83.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xea81fd3623c03ff6d04c02754dd7724c936e614899330b5dadc8e0a6be85566b","isrc":"DEQS91801134","name":"Jenseits von Eden","registered_at":"2026-06-29T18:05:36Z","spotify_id":"0CkFJvwEhEL2QKmNUAKMML","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 0xea81fd3623c03ff6d04c02754dd7724c936e614899330b5dadc8e0a6be85566b. 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/0CkFJvwEhEL2QKmNUAKMML.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/0CkFJvwEhEL2QKmNUAKMML.
{"copyright_id":"0x7eb35b27b93eb5709bf4bcc2dbcf3315107b299e096ff246860718129491b84d","isrc":"DEQS91801139","name":"Ein Stern (der deinen Namen trägt)","registered_at":"2026-06-29T18:11:13Z","spotify_id":"5PaHjjCywaQjGvAECEvBya","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb35b27b93eb5709bf4bcc2dbcf3315107b299e096ff246860718129491b84d. 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/5PaHjjCywaQjGvAECEvBya.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/5PaHjjCywaQjGvAECEvBya.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bda2da0ec6c59d96b677e7be18dfd24343cd48704839468d201ea54b734c10c. 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/3QMX7lncyF40ZkLNVOVVfg.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/3QMX7lncyF40ZkLNVOVVfg.
{"copyright_id":"0xa2021cfe1f851f497cea1a409fc99f6d997f19ea27d0cb871c7276f2f3bf0d6e","isrc":"DEQS91801141","name":"The Power of Love","registered_at":"2026-06-29T18:05:38Z","spotify_id":"23l9nQavCwmQCiusnzIt70","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2021cfe1f851f497cea1a409fc99f6d997f19ea27d0cb871c7276f2f3bf0d6e. 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/23l9nQavCwmQCiusnzIt70.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/23l9nQavCwmQCiusnzIt70.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7b568651e45e873c7474adec8b5eaae3d8ecffd27f6f2ed50313e0a7d3495c. 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/05Xm6pM67JlMAInH1Y5dcs.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/05Xm6pM67JlMAInH1Y5dcs.