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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e72a846ea209a82f6ad002e1502cd57b0dde59b2375b2233cddc4935bd8a65f. 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/633d87a5-5275-489a-9bc3-c131241d46d3.json and https://artists.proofprofile.net/proofs/artist/633d87a5-5275-489a-9bc3-c131241d46d3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Smoke & Chill Beat - Copyright Free Lofi
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563e0c5ce77f4726cd386a8640c9624376c89cda2615d76f12036f4ac3963ccc. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:35:59Z), 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/CARHN2103511.
Morning Chill Music - Copyright Free Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e97383e8dcc24fbd5df001ad3354277f01cb7fc36b1cd6ceff45f0e68dc0bc3. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/CARHN2103512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b145e06bb0ad467d7ddcea0a793f5fcccae8b0c9660ba1e5356c5c6b8a4b74d. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/CARHN2103514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66763e59ba74b6282c7967e6acb4c8eff56d1584ed8b7aabacfc3ed615bad7f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CARHN2103516.
Gaming Background Music - Copyright Free Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3482c6997aee2396c43791549cea853c19beafb194b4d5c7d29b5ed59da52de4. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/CARHN2103517.
Streaming Background Beat - Copyright Free Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6609748edb1d2dcc223841e3c5de6810f8934c873331b178dd4063d85bc4f896. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/CARHN2103521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80cd0008908a42500605d0d130c22ff9592b264977005dc96cd95cd87f23cd52. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CARHN2103522.
Sad Background Music Piano - Copyright Free Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ce98bd69fa2a9894b30b99f5bfcbb65f99f9748615c93ec7a783a3ab40b2ef. 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/CARHN2103523.
Happy Background Music - Copyright Free Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37250b3b26c29c4a0a458ab738268f491d1fd902ae1d8dbbabb8fdb23b2e6365. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CARHN2103526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d697e7c5f10ea2b20a0675a463357a098bbc81e634518958b7b0b3ac38c63c. 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/CARHN2103527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6458b35d2bb003d03970fd14523b3073593e3560d16f48dd50a1a57416e566e4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CARHN2103529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9493a948f020fbd884afdb2570688ccfdbbc876f6f9e01e0c69c7e5189028f76. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/CARHN2103532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4cc848dcb0f4abaa3828b46f2aad5fb167403868929ca1215ab30899d611f5. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/CARHN2103535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44caa3fdcec7a5ae745fc045bebe8c9cf83ec57930392385c76318f8d57b1ec5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CARHN2103536.
Soft Background Music - Copyright Free Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ddd142e148a6072f7b524b3b009d0c959f8ab31c07f53bb0e5c01d84534cc7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CARHN2103542.
Chill Beats Background - Copyright Free Background Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99317187e54156ef1c652d70dfb20dda1f34a2ec60b5bfb8ed31267d0bcca3b6. 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/CARHN2103544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f213dce0cbcb2b9c0a6bf18f8b93714ee0b2c9ce8ab260d9632c5317bc00b7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CARHN2103548.