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 0xf0d3e92b539192a1661e97fa210e4f17054b60b494253a3bf33228e271c9422a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7552d77-6cc3-42bd-9744-f2b4af4b4944.json and https://artists.proofprofile.net/proofs/artist/c7552d77-6cc3-42bd-9744-f2b4af4b4944.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 0x8d30cb4597af3bd9dd24698a30b6d9d3a094c560713585bbc2b17bf93a5eab17. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5SC1J3m8rwbxHaX5FvROTa.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/5SC1J3m8rwbxHaX5FvROTa.
Vintage Café: Lounge & Jazz Blends (Special Selection), Pt. 2
{"copyright_id":"0x8d30cb4597af3bd9dd24698a30b6d9d3a094c560713585bbc2b17bf93a5eab17","isrc":"ARF410701303","name":"I'm Not in Love","registered_at":"2026-06-07T12:56:54Z","spotify_id":"6foRvKIEghUTxbBxpGTtv5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d30cb4597af3bd9dd24698a30b6d9d3a094c560713585bbc2b17bf93a5eab17. 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/6foRvKIEghUTxbBxpGTtv5.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/6foRvKIEghUTxbBxpGTtv5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2436b4190929038ca0212949ad734a62192e1d1e1bc239649d5785e2f236947e. 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/1WMfO4j1n9p7HEV9DAfFA6.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/1WMfO4j1n9p7HEV9DAfFA6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d30cb4597af3bd9dd24698a30b6d9d3a094c560713585bbc2b17bf93a5eab17. 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/14mgIr5uaDyoeGUI90LuhE.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/14mgIr5uaDyoeGUI90LuhE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12d4ced65fca5a303f1e11524678b56289d5f2a125b07fe2499a8be288a488d. 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/5g7bMrLkOJ3zGwXChEMWTW.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/5g7bMrLkOJ3zGwXChEMWTW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2436b4190929038ca0212949ad734a62192e1d1e1bc239649d5785e2f236947e. 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/0RqDVHhFMEzJvHdK9j26Cc.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/0RqDVHhFMEzJvHdK9j26Cc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2436b4190929038ca0212949ad734a62192e1d1e1bc239649d5785e2f236947e. 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/66601V0SQGuX5fjBbePULj.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/66601V0SQGuX5fjBbePULj.
{"copyright_id":"0x7dd92637fcd71f83eeb153eec7c944d75a578883e1721b3f2423e60ebfd5d360","isrc":"ARF410701305","name":"Sweet Child O'mine","registered_at":"2026-06-23T10:57:19Z","spotify_id":"4m4cb2GTsxfpiVLaIarLFg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd92637fcd71f83eeb153eec7c944d75a578883e1721b3f2423e60ebfd5d360. 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/4m4cb2GTsxfpiVLaIarLFg.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/4m4cb2GTsxfpiVLaIarLFg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d30cb4597af3bd9dd24698a30b6d9d3a094c560713585bbc2b17bf93a5eab17. 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/0MOguHcM0ZP3OKWDYYzps0.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/0MOguHcM0ZP3OKWDYYzps0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2436b4190929038ca0212949ad734a62192e1d1e1bc239649d5785e2f236947e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1vbUPz5j5fFkPbCFdkmfbA.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/1vbUPz5j5fFkPbCFdkmfbA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd92637fcd71f83eeb153eec7c944d75a578883e1721b3f2423e60ebfd5d360. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4IdYf94C557zt1Qt6s78ru.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/4IdYf94C557zt1Qt6s78ru.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2436b4190929038ca0212949ad734a62192e1d1e1bc239649d5785e2f236947e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0SPcBVX3JyRN0DyWXhHIv8.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/0SPcBVX3JyRN0DyWXhHIv8.
Chill out Trilogy: The Definitive Collection