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 0x2007145ad57f11cab51415ef88f9a01daabeb0330890009fd76b0769b077d2b1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c052ab1-9ade-4f7c-81b6-453345571b06.json and https://artists.proofprofile.net/proofs/artist/9c052ab1-9ade-4f7c-81b6-453345571b06.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 0xb31e502e18688c24d1690d9f3bafe262333f490b9b02bbae24426c96b05bec9e. 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/5m1VnINOjtw4ClN910WOVU.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/5m1VnINOjtw4ClN910WOVU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd211c194f1a6fd8b204029876d9755fba69e606177812dd6778c95d4884e238b. 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/01y1prWkK0HrLnrT5WNdqO.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/01y1prWkK0HrLnrT5WNdqO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2969afe88b19a66c6147a04b976db67f5010f7e182fed9f47e685a948eb73f. 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/6d77EgzJQqzb3NX9MjrTww.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/6d77EgzJQqzb3NX9MjrTww.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690d13dc8f231ae44b0e1def8a47a507b18b7d7085f9c9ba01ad7aeeb37a0c67. 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/02CEFJ4obtQZksTa9Y37d1.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/02CEFJ4obtQZksTa9Y37d1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6d3393057005a97a8de4077105dc0614ab4e6efb42e1813686228ba8a931dc. 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/4MGFzKlIM2OTzP1aKdj6pN.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/4MGFzKlIM2OTzP1aKdj6pN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4859875924b8ec9bf40bceeb73ec7296d8dbe7be6a26fd205ee13d2576fb8526. 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/7d7uBbeIcJjnJ99GKM28Rp.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/7d7uBbeIcJjnJ99GKM28Rp.
{"copyright_id":"0xcee578be2e683f0b07aba41ab466a508d1d60b5217d7ae070eabffd7d2ef9691","isrc":"ITM2J2200012","name":"Summer Feeling","registered_at":"2026-06-26T23:30:39Z","spotify_id":"1QRHQuLACkQkMw5ilGN2sb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee578be2e683f0b07aba41ab466a508d1d60b5217d7ae070eabffd7d2ef9691. 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/1QRHQuLACkQkMw5ilGN2sb.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/1QRHQuLACkQkMw5ilGN2sb.
{"copyright_id":"0xb87c2d9387c615180f2f716fae498b053f481e783f1c21dbc011b29fa23dbad0","isrc":"NLQ8D2200634","name":"I Don't Wanna Know","registered_at":"2026-06-26T23:42:46Z","spotify_id":"3WZGCpVihRkxcnL0kYGBYz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87c2d9387c615180f2f716fae498b053f481e783f1c21dbc011b29fa23dbad0. 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/3WZGCpVihRkxcnL0kYGBYz.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/3WZGCpVihRkxcnL0kYGBYz.
{"copyright_id":"0x66749351312c4f0c7fb75d35c38fa2e5fc8ca3d408570b882bb253016b522fdb","isrc":"NLZ542200487","name":"Priorities (feat. EMMA LX)","registered_at":"2026-06-10T03:41:42Z","spotify_id":"1q2HETsVUUeUbrbv0uFlYE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66749351312c4f0c7fb75d35c38fa2e5fc8ca3d408570b882bb253016b522fdb. 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/1q2HETsVUUeUbrbv0uFlYE.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/1q2HETsVUUeUbrbv0uFlYE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f91036d155156079f53780fa357d53dc810e547f4f70ece2379ae457e4a72d. 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/66ticyVqSUMfRNrXOlZ1GE.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/66ticyVqSUMfRNrXOlZ1GE.
Sacrifice - Torsten Stenzel Extended Mix
Cleaning Music 2023: The Best Music to Clean Your Home by Hoop Records
{"copyright_id":"0xcee578be2e683f0b07aba41ab466a508d1d60b5217d7ae070eabffd7d2ef9691","isrc":"ITM2J2200012","name":"Summer Feeling","registered_at":"2026-06-26T23:30:39Z","spotify_id":"7wdwFJ3fzi9dI4vjAbg7ab","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee578be2e683f0b07aba41ab466a508d1d60b5217d7ae070eabffd7d2ef9691. 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/7wdwFJ3fzi9dI4vjAbg7ab.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/7wdwFJ3fzi9dI4vjAbg7ab.