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 0x3bbffa7844d528650469af6daf4c8ff84f1a936fee2d53beb86c4459e49a5884. 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/d3dbbb46-8c6a-43c9-a652-c9ee5def23b7.json and https://artists.proofprofile.net/proofs/artist/d3dbbb46-8c6a-43c9-a652-c9ee5def23b7.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 0x09911a29f2078c6c5080a471abeabbe6934764e28d87d0481ddd9cf7fe5e4b18. 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/28J06yQ1Z5DbGufH5rHmYM.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/28J06yQ1Z5DbGufH5rHmYM.
{"copyright_id":"0xe721899af802ab672d8c0382d1a3aa6fc9819f1dc7a0302ec4f95bf56fd35bf9","isrc":"BKNNO2200010","name":"se realmente me ama","registered_at":"2026-06-09T04:42:29Z","spotify_id":"4xEvzcl4cGvWBElOj9l4PB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe721899af802ab672d8c0382d1a3aa6fc9819f1dc7a0302ec4f95bf56fd35bf9. 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/4xEvzcl4cGvWBElOj9l4PB.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/4xEvzcl4cGvWBElOj9l4PB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4d1a2d7375f50755a656550a2fd34890e0b70801402f6bc082ab8eff91808b. 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/65mDfR1kN1Bq3eM7b1XDGn.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/65mDfR1kN1Bq3eM7b1XDGn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bff57659aa16dc283cc28be9b4a1a2aa31a80e193b49d9626f81170287ca1d. 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/07HjGq4vEscKnlIbPax81i.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/07HjGq4vEscKnlIbPax81i.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f521ab4c8a7b074b6839f9ab7a999915287f275fa24296a85b6ca1c75f90fa4. 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/0L5JOI5EynJZvGFcReoHON.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/0L5JOI5EynJZvGFcReoHON.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a44dbc7a9e9741b2941bc8de45668a88016a1b0a07af5cac2720938abef43bb. 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/2Hltu4jtYxRmO1LbCN1nDQ.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/2Hltu4jtYxRmO1LbCN1nDQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1758198a2552c134a051f194a0d7cec2de952f823f3e535fb668ad192104613d. 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/2xwI1fdPR8AWQDGhghBxb9.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/2xwI1fdPR8AWQDGhghBxb9.
{"copyright_id":"0xf40f8578a6aa5ffa2f66dff55c4adceae9c6d8904ba85771fe3d612a22ffa99e","isrc":"BKNNO2200014","name":"duas bb","registered_at":"2026-06-18T15:20:31Z","spotify_id":"0RNwIj3yCM0ZyaTYpRv1g1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40f8578a6aa5ffa2f66dff55c4adceae9c6d8904ba85771fe3d612a22ffa99e. 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/0RNwIj3yCM0ZyaTYpRv1g1.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/0RNwIj3yCM0ZyaTYpRv1g1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6d5214d8474da894cf83a8501330f847fb97b31ef23a5753e0c7338422bf1a. 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/7AL17rDOALZLWuXaKmSLR7.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/7AL17rDOALZLWuXaKmSLR7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f3844440eafb95333e79a6a386b02fcb989f971aa7bea7bf6c7a2f3c41c765. 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/6165j3QpylZN6BJqo1SOXL.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/6165j3QpylZN6BJqo1SOXL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f97ee697b49cad717cde82b52f6954b19b754226dc86ed46d6eb83eacd12d77. 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/2ti12XcXzJ4Cmflg5W6wk5.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/2ti12XcXzJ4Cmflg5W6wk5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c5aa37085493434bcfef3cab463ae7ed04cb3fd8dcb3c2d615cbb1aed3dc09. 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/7xb1gQsIdT5vKgbT5SyG9a.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/7xb1gQsIdT5vKgbT5SyG9a.
{"copyright_id":"0xf288d3cfa76f0be3c41ac3f5a50025396106304a53edd37ba773be9dc96c708f","isrc":"BKNNO2200013","name":"porto rico","registered_at":"2026-06-19T11:16:40Z","spotify_id":"6QVsmhlgIGbj5vQQSszV6k","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf288d3cfa76f0be3c41ac3f5a50025396106304a53edd37ba773be9dc96c708f. 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/6QVsmhlgIGbj5vQQSszV6k.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/6QVsmhlgIGbj5vQQSszV6k.
{"copyright_id":"0x0f198f181a380d3ae6aab62d0497bbed13600908ef0da936b619e59ca4935a22","isrc":"BKNNO2200038","name":"Meu nome é Polly","registered_at":"2026-06-07T21:50:22Z","spotify_id":"4QOg13DtKNNehQuDw2slDs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f198f181a380d3ae6aab62d0497bbed13600908ef0da936b619e59ca4935a22. 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/4QOg13DtKNNehQuDw2slDs.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/4QOg13DtKNNehQuDw2slDs.
{"copyright_id":"0xb504a1fcbda84bfabaf504ed2a6bb347226d9113d1bc5e790c94b4ac087e8b65","isrc":"BCDFI2400015","name":"Vida de artista consome","registered_at":"2026-06-25T19:51:41Z","spotify_id":"0lmerXYAQFl6Ajo1BsQvx9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb504a1fcbda84bfabaf504ed2a6bb347226d9113d1bc5e790c94b4ac087e8b65. 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/0lmerXYAQFl6Ajo1BsQvx9.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/0lmerXYAQFl6Ajo1BsQvx9.
{"copyright_id":"0xd9698c0bb47db11ae0ee796838b9ad1aea734b1b1c96e19bd8b8b959a7ec4eb5","isrc":"BRWMB2400847","name":"Analógico (Under Sesh #1)","registered_at":"2026-06-25T08:25:59Z","spotify_id":"4YeBh1bp978Zd7XnczF6yF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9698c0bb47db11ae0ee796838b9ad1aea734b1b1c96e19bd8b8b959a7ec4eb5. 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/4YeBh1bp978Zd7XnczF6yF.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/4YeBh1bp978Zd7XnczF6yF.