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 0x5ec029f18bdc8dd2fb13b96c78318d1a3388f96ebf1186fcd54e446824cc004c. 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/67c9235a-5f4a-49a8-9ea4-e39b9bf6b700.json and https://artists.proofprofile.net/proofs/artist/67c9235a-5f4a-49a8-9ea4-e39b9bf6b700.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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{"copyright_id":"0x13811e50f3abd3d61bfcc6f42a0f6751857c51b534eb4daf2aef5916f7132891","isrc":"SE5IB2331855","name":"Idyllic garden","registered_at":"2026-06-02T01:55:53Z","spotify_id":"0uPRRKhenDTl56bWKDcilK","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 0x13811e50f3abd3d61bfcc6f42a0f6751857c51b534eb4daf2aef5916f7132891. 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/0uPRRKhenDTl56bWKDcilK.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/0uPRRKhenDTl56bWKDcilK.
{"copyright_id":"0x9f512c68e9da7e7fe40772fc63b7d9ba52f69fbad86900b220d70dbb4a9754f1","isrc":"SE5IB2326811","name":"Real As Rain","registered_at":"2026-06-04T10:54:28Z","spotify_id":"7zhkMFOWQEwHxIrZzd8Ze5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f512c68e9da7e7fe40772fc63b7d9ba52f69fbad86900b220d70dbb4a9754f1. 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/7zhkMFOWQEwHxIrZzd8Ze5.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/7zhkMFOWQEwHxIrZzd8Ze5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2c48d03656e0343fcbee5419743f13d4727a3396c12614b2385b1c1521c2f7. 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/3uUXUwWgQ0SdkAY6BAJE4d.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/3uUXUwWgQ0SdkAY6BAJE4d.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c437e0dbe15ed8591a936c4788ddbfc30f23ad18c8bef89e136d48b1e9d974. 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/64XD6XEroqjxW25e6ZMHMK.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/64XD6XEroqjxW25e6ZMHMK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728a80b070d9e52205dd6779043a47813bc042826e85c5c309d37e49fec3c55e. 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/4UJ9CeB5TeQfHdhGvwYKnH.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/4UJ9CeB5TeQfHdhGvwYKnH.