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 0x3604403208f6464a0ec0f9ec418ff3186398e5f67a8abd24154d81f9667f8643. 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/bd563ad5-ab1a-407f-ad65-2cef46bf26bf.json and https://artists.proofprofile.net/proofs/artist/bd563ad5-ab1a-407f-ad65-2cef46bf26bf.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 0xa47c40b8638f5aafcd2296d1d129853fe42f67cac3ea1fde4a4168801ebc0035. 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/5lmLZPKyAwrLxnWRbOKOZx.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/5lmLZPKyAwrLxnWRbOKOZx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec48f75bec966bdf385a9cecacc8ccfecc2b7aec868066f49ea83e95dc2da210. 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/6Fle3fOAMxeM5SynPQk4Rw.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/6Fle3fOAMxeM5SynPQk4Rw.
{"copyright_id":"0x1cd04111058a4f1adb2d9fcfaefb518d80e0eb5a1083fb9f424cf35f3cf645d8","isrc":"FRX201758336","name":"Lock and Load","registered_at":"2026-06-08T03:49:14Z","spotify_id":"6G2dKk2F6C05JUwqj8OXkZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd04111058a4f1adb2d9fcfaefb518d80e0eb5a1083fb9f424cf35f3cf645d8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6G2dKk2F6C05JUwqj8OXkZ.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/6G2dKk2F6C05JUwqj8OXkZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45e08bb232dbd35ed816f3a8df6c6b6e9e6f75856f9852e44a0790051969d99. 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/3Isl6GKr5RwvM0l6EeBvQ7.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/3Isl6GKr5RwvM0l6EeBvQ7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedee986c1ec7f9ccf9af316756285217b339e10bc791abe712a971a84109b007. 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/1ext0E1XX3NkAC0xskKnSM.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/1ext0E1XX3NkAC0xskKnSM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ec3c2b86ed75cfaee6fa67f7f53402bb0654b05ec5315bb183fabfc3977be5. 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/2JRrExulyTlO4eOFNoZPnp.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/2JRrExulyTlO4eOFNoZPnp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23544d52e82ced3e0cb371495eef9b39e4f7992b014bbaeca5046f9f801b451c. 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/5ZibzchD1eUh6gpmXGDcWJ.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/5ZibzchD1eUh6gpmXGDcWJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb3e5e5736c63b7af421dc78d11fd9c2b912267540ed5f7c5b67736018ba736. 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/5Ju4arvCDa1OwsazuCfNfv.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/5Ju4arvCDa1OwsazuCfNfv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6733bbdcc72d9afef6a49ac902d1c521ec2723c1004cfb7b218462e337c06262. 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/4mSwE76Nt9hVJl4p5zXVR9.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/4mSwE76Nt9hVJl4p5zXVR9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7953802589dba1976fa90bca75aac0aa5cc40a2992050e56d147bb1fa8b5e77. 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/2K111q8Ygg5gEswtkPqp7a.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/2K111q8Ygg5gEswtkPqp7a.
{"copyright_id":"0x501272ccf03e059ff5451efdfc9eaed8654a0575417bcd1889edfdbfbbf44e8c","isrc":"GBHLW2003298","name":"Dime Por Qué","registered_at":"2026-06-27T15:32:42Z","spotify_id":"3Xqj51Y9aLA4yQ8F9obDXC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501272ccf03e059ff5451efdfc9eaed8654a0575417bcd1889edfdbfbbf44e8c. 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/3Xqj51Y9aLA4yQ8F9obDXC.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/3Xqj51Y9aLA4yQ8F9obDXC.
{"copyright_id":"0x1480d8df7712d435c8ab75d09db867ceb6dc921c56f0c69e59dbcb2500fe4371","isrc":"GBHLW2003986","name":"Fisher Price","registered_at":"2026-06-07T02:34:01Z","spotify_id":"73TkDidLQVB4jYSfapc57z","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1480d8df7712d435c8ab75d09db867ceb6dc921c56f0c69e59dbcb2500fe4371. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/73TkDidLQVB4jYSfapc57z.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/73TkDidLQVB4jYSfapc57z.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7bb90a3341a008f2d1f6b3f764af5d1639e4fc0563f63bb3bfc1b3366965b4. 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/1lRiapgWrBdJX45ux36a3D.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/1lRiapgWrBdJX45ux36a3D.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b28ad56c78d3a23c483323231142922e15289779850624feb9baa253d6fb903. 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/0mNIbo4oCxvnlBlTtFjdoL.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/0mNIbo4oCxvnlBlTtFjdoL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc968a3388027e4c244a0e9acc06b1ab93cab9b01910c90e217502952fa39a92d. 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/3JnE476Hk1IIOWX8ZvgPzP.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/3JnE476Hk1IIOWX8ZvgPzP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f14854ccdb2c7844f5943f1a87b0de82a6474ece457aa70facaeeecd0360722. 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/48dLwOltcTqBjX7cKPWaFk.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/48dLwOltcTqBjX7cKPWaFk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659e1164f2b00e095bf5ca91a079904704b5b4f8e9fef29ba027a1561da31a6c. 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/2D0WLfJJ34Zh5805eKf0hF.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/2D0WLfJJ34Zh5805eKf0hF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f27035bd828ba383bf25abd40a4002478ffa403358189381755cc70356ddf49. 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/7bRJYlP6je0PUIIGfSUwr4.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/7bRJYlP6je0PUIIGfSUwr4.
{"copyright_id":"0x16ebe55ca1ceac9fe994783a391e285c367e6c0ad2e5152fb7e129c880b22c31","isrc":"GBHLW2200292","name":"Die To This","registered_at":"2026-06-18T19:46:31Z","spotify_id":"7nOSQv4hEnZ2XtHKxDFHsk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ebe55ca1ceac9fe994783a391e285c367e6c0ad2e5152fb7e129c880b22c31. 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/7nOSQv4hEnZ2XtHKxDFHsk.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/7nOSQv4hEnZ2XtHKxDFHsk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce3b207a0a24d3b07961d356274ca1e6ac17e9486950817a2be4a614d67f953. 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/3pklGLyZfaxbXYKZS5KAz5.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/3pklGLyZfaxbXYKZS5KAz5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1480d8df7712d435c8ab75d09db867ceb6dc921c56f0c69e59dbcb2500fe4371. 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/5zpESXNB2tt751H8dr2yMd.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/5zpESXNB2tt751H8dr2yMd.
{"copyright_id":"0x7dfc1414283e795594cd5c3aa92eadeb6bfd0bffe9747fc32856d76ccfc92e19","isrc":"GBHLW1900327","name":"Tell A Friend","registered_at":"2026-06-18T19:40:08Z","spotify_id":"0lm6zc5NHVYCkzymAzpySU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfc1414283e795594cd5c3aa92eadeb6bfd0bffe9747fc32856d76ccfc92e19. 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/0lm6zc5NHVYCkzymAzpySU.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/0lm6zc5NHVYCkzymAzpySU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1099bd9152a661b28d14b759f872037ea442203044fc1e41b6198f7b7ca3e9fd. 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/5r4yQDTmVuFYqgDDB5QCrR.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/5r4yQDTmVuFYqgDDB5QCrR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1a638262acab73787e96a595bfdc7b101297cd5ff588e975f5f329d299cf2d. 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/0v1oGidaXgoFRS3KwpoOj7.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/0v1oGidaXgoFRS3KwpoOj7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe5794dc6887077ed5a7c629525c1a833109b099b201e67193282dfd79fa6a9. 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/3NXlu6EvmwLzJTkJOha4nJ.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/3NXlu6EvmwLzJTkJOha4nJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9757b0ac19ea8e55205be8235497fd75fb25e3b6462d3983b8796f71c71b674e. 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/0GVgZ3zwB5ebZULxUy0dM9.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/0GVgZ3zwB5ebZULxUy0dM9.
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