1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869c02bb91ede431dbc8c18e4120dc887ab2240da06ee8ccc0db2b8542d4ee0f. 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/c51cc6c6-dbf0-4eb8-a846-6e44732e9859.json and https://artists.proofprofile.net/proofs/artist/c51cc6c6-dbf0-4eb8-a846-6e44732e9859.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
963 Hz Complete Rest (Delta Waves Music for Sleep)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695f8a6ec907c04702062029c2a9d08b33f19b83e0273332451c79db7cc44fbd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82532569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e6484d7b552a2c77b0d9cbc549af66bb33e928e9e61ab6409b014ccf6f753a. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82532570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6355066298e2f0243552a84327e7288a0b9855eddcb511e79cfbbb468fce06. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82532571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76b2a7d466caf3d11f01f60711b8b896e5eebe03a15613692ba11c28d4739dc. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82532572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9c78cd6c7a2f398760d1c71ec8bce74dab1b60d517d33b1bff6d6bcdade28a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82532573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ed000bdd9a53757577442300fc9360c5f8a46408a03b31ebddc8215f77d951. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82532574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1368837d96895b1570aeb89aba95895805be53f2d15dd961f795526d95f4a2d8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82532575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc64d0e03044e9e4261aaf9edf40eb81f07007ebda36876c018521e7ec6dc856. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82532576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9db11cd74a0bdfe56c5bd2a3caa5588301949917b0c33b213c8d16318bad3d. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82532577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43e0ba3c954c16a4dbb28e1f9b6cd660f0ac9a6bfda9b66077fd2ce5d13f1ae. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82532578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618d79663c3cac5e2a06c333ae67cce576f03a369969a14cb91c8656af995d47. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82532579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75f6ef1a8fbcaa375f5a2a6d73c7eeec9998e6812dd67f25cec074f2b8c41a3. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82532580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8243f78974d460d90102aad6156203816aa1ecbca844231c5c7c1cc228bb0d70. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82532581.
741 Hz Clear the Mind for Sleep (Delta Waves Music for Sleep)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d4c4e89181bbe395a6afd1b020a2d6ef8642abb90339e3c46400fa725214d9. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92560705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed126401953baf6c71863b624421c4eb5f5a1a203ed21b134f01f3f1b9c5a0e. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92560713.
639 Hz Restful Sleep, Restored Mind (Delta Waves Music for Sleep)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0d46cd5f2fea0875c538d4c71f868c6611f74e49c22f12dde6927d1307f10a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92560723.
528 Hz Deep Healing Sleep (Delta Waves Music for Sleep)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c116108349d8b246ca191b72656de16c1c7f97ba1f499d1a7ec9488fb90675. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92560736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e582445eee5f62a57019cace8b2e8111d472ede4b6e14bbca058a8d1c448433. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92560744.
417 Hz Clear Negativity and Recharge Your Body (Delta Waves Music for Sleep)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a5c240bc4c78b3ff55d3f9df26244b3285f945210fc8b72aef26b7bc2e02a3. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92560692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1b74c2e6e66d9b134882d1e067abf77e95e98ffeaad4c5215e676330806fc8. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92560694.
852 Hz Clear Mind, Restful Sleep (Delta Waves Music for Sleep)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31ae2070190c4de6bf5f06dc4e1108b80bf3e885806e5c36af593f7283cc995. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92559284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a6c86ef1aedd1188698e3ebbcf002e079005df3bbd15d4e0dc3bd9db8313c5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92559287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f51801ae5872dc08875ee95412b0259860e611cc269703793d9797723e86716. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92559288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf098d896a43f50dad3b99e7b108708401063dfdbe3343161155fcd8da9b45d6d. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92559292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677f6c4777f5514f7e43854e96708aab2f7de5e02f2b4bef98e534a51a1ea70f. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92559293.
432 Hz Relaxing Music and Rain Sounds to Sleep (Delta Waves) Loopeable
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed2920bbc6d925313d82567178675544196bdbb20b7e346eed584dd9ca1be61. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2510664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69814592d5690e8e1a539fdfc50c24d2cd150e44dabb271189a38e8f7cbcc82e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2510665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4b7655ba3dcebc7cd7f4917f843e9049235fe487fa42a2c4cd174015157779. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2510671.
432 Hz Relaxing Music and Ocean Sounds to Sleep (Delta Waves) Loopeable
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c7f77002fb2fa34cb92480ceee497366cc30def2ce4c16d75227a71b1fb9a9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2597113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508184454ab7ecd8e5137abf8e3162607bdf6f3a36c0bf1189ddc82275e568cb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2597114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf10f3063eaa483c4dc2a0c60ede28b43469521267f550bc6d38647c9273d8f8. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2597115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85238f2c4397081c4f40c5a121a9d49f5133afd9c57eac169f94eb30176641a9. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2597116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68f142dde183228dc5ef964156eec06d7935151afe4c2c399c085e3ecf183c4. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2597117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f56477e719412f20eb3fa27593a65dcff5e35462702fc47fca7e39c9e5adc6a. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2597118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7374ad1e18c39ccda4b25fc598a51706e631a6300d9796dcce82d2ed0462fbee. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2597119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554c3d54135fccb253233120be5fa4458d4cd7527f27a00449199286298486b1. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2597120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a64feb629b825688356e3420e39be5c1056644997ae6da927d7cefe231da8a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2597121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aebc22e3cdda203924511bc87d1792503a53e0e7ec47725762f8c08c76d1465. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2597122.
417 Hz Relaxing Music and Fireplace Sounds to Sleep (Delta Waves) Loopeable
528 Hz Stress Relief (Relaxing Music to Sleep) Loopeable