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 0x2455945087422d4a3d8a9440cf9593611aee91346baa1fdac8e980d545c2a1d8. 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/0517597b-20ba-4834-b2d2-6d10fc3af8f1.json and https://artists.proofprofile.net/proofs/artist/0517597b-20ba-4834-b2d2-6d10fc3af8f1.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 0x3303f43c4683a06b21f22bf4ef7991db1519851207f71ee71ca31ad96c5d596b. 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/1zrshsq9z1PRWXndAzGcQX.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/1zrshsq9z1PRWXndAzGcQX.
{"copyright_id":"0x01cf3e05c065dac5158182bde4673faee5889445133dc7340e2d5bb9e204399f","isrc":"ARF112300240","name":"Baby Boy (feat. doppel gangs)","registered_at":"2026-06-17T21:37:21Z","spotify_id":"35CvXjCh3BlKQZCt8aOurM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cf3e05c065dac5158182bde4673faee5889445133dc7340e2d5bb9e204399f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/35CvXjCh3BlKQZCt8aOurM.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/35CvXjCh3BlKQZCt8aOurM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf6e87742e40b55372c58cbb7f678e0ce9939c1a393addaabe86c9d64269d23. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6HhlC75ifItQyEuGnYCruW.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/6HhlC75ifItQyEuGnYCruW.
{"copyright_id":"0xe550a7ab3b672fb4086da1d1344ecb7bbac8185d1e9d32df24fcd452d3f085bf","isrc":"UYY112400014","name":"trance ZZZ","registered_at":"2026-06-09T16:57:46Z","spotify_id":"5rBfUmYhDghCAOlsd8YXl8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe550a7ab3b672fb4086da1d1344ecb7bbac8185d1e9d32df24fcd452d3f085bf. 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/5rBfUmYhDghCAOlsd8YXl8.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/5rBfUmYhDghCAOlsd8YXl8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0442584300ea42383083d2ba3fde6f05f041d12e8f88a4edd2d5ef7332e38b18. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0MOHKG64W8wxHBezLSmqEI.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/0MOHKG64W8wxHBezLSmqEI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d004debb5f23a38574c692a02743ffa426277bd141890f0e1c6e545db0cd4bf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3S1FkSB0XOXaM8YtOq88Z5.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/3S1FkSB0XOXaM8YtOq88Z5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244554c69753aee249c9c80c76d55dddd06dd6a4f3ae916e294d1b9d3226615d. 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/6MSeh3EnQbb1xl3HzoDRK9.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/6MSeh3EnQbb1xl3HzoDRK9.
{"copyright_id":"0xc5dedad7ee98ebc6c2a07346e864ceb9f70a75be1c08fac342be6f22c932b99a","isrc":"UYY112400016","name":"ZZZombie (feat. FERMIN)","registered_at":"2026-06-24T11:28:16Z","spotify_id":"177tGh4IWrNQJ9DPiBQ18Z","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5dedad7ee98ebc6c2a07346e864ceb9f70a75be1c08fac342be6f22c932b99a. 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/177tGh4IWrNQJ9DPiBQ18Z.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/177tGh4IWrNQJ9DPiBQ18Z.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a42eed5aadbda23285ec7b31883458b575cd30db44e1e5c0fcf40593ffd759. 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/631JdZcRon2YxqXJ3vwLgl.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/631JdZcRon2YxqXJ3vwLgl.
{"copyright_id":"0xc6450792c137cea46df608fed99fb203930d9d8ebd359ef3fb6bf9d334a5372e","isrc":"UYY112400018","name":"FANTASIA ts10 (feat. SIMONA)","registered_at":"2026-06-20T04:50:59Z","spotify_id":"7pwvZdQaD2m4MoCv2Q4QNV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6450792c137cea46df608fed99fb203930d9d8ebd359ef3fb6bf9d334a5372e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7pwvZdQaD2m4MoCv2Q4QNV.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/7pwvZdQaD2m4MoCv2Q4QNV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990e6d84a77a71bfec8a408ba1f8de13852828f555c3439975ce6b71c3bf8d79. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5Gvcxh9XFeSDt2OulLv5DA.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/5Gvcxh9XFeSDt2OulLv5DA.
{"copyright_id":"0x4f8c829e37cd9dbc8ed30de7b12a231cbdd8efca561601d25160bd7e346481b3","isrc":"UYY112500016","name":"trance ZZZ (Cocó remix)","registered_at":"2026-06-21T17:32:40Z","spotify_id":"30VzvLVIDSAEqLRs8WS1BB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8c829e37cd9dbc8ed30de7b12a231cbdd8efca561601d25160bd7e346481b3. 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/30VzvLVIDSAEqLRs8WS1BB.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/30VzvLVIDSAEqLRs8WS1BB.
FANTASIA ts10 (Ygnacyo remix) (feat. SIMONA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d3a3542335906254f521ce7409f906fb1c08fa474e1392739e2d14c7a4ff44. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6qHzCPZLzaE8Dqhv14Hb5N.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/6qHzCPZLzaE8Dqhv14Hb5N.
halloWEED :( (Stridah, Zé Pequeña remix)
{"copyright_id":"0x749a4e3f6af9019bd28e61723f903703d38eba6e0ac6efc96cefcf7ead4f4bf8","isrc":"UYY112500021","name":"halloWEED :( (Stridah, Zé Pequeña remix)","registered_at":"2026-06-25T16:28:11Z","spotify_id":"6MAkatoH6e97whdiBo4jTK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749a4e3f6af9019bd28e61723f903703d38eba6e0ac6efc96cefcf7ead4f4bf8. 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/6MAkatoH6e97whdiBo4jTK.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/6MAkatoH6e97whdiBo4jTK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d06275fdce80422678f824dd424b9ace1c46565ee7ee17460e250201fde5980. 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/3xqzZLulLlevU1QIaCF2Zk.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/3xqzZLulLlevU1QIaCF2Zk.