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 0x5464647b3fe74e65a0b19473b83f4ea0f8c9c0e121cf44451912256f615af69f. 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/483e7173-2298-4fc2-8ed9-36fff4443eb9.json and https://artists.proofprofile.net/proofs/artist/483e7173-2298-4fc2-8ed9-36fff4443eb9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x29686aa44e0190e3357783c8fcb3104dca437bfb142ccbd7b6ae0cf53e076d4b. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USL4Q1813943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728d6254ce0986031c4dac18d1472f1f851f3f8c8b30288b7b293dc78f29917d. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USL4Q1813944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1efc086316e8122fdfaf14258f7e08b428d3e2b21c4112b42ac5ef95c0ce54. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USL4Q1813945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69dab676e0d4f54fa9574560eb3def15678bdf86c21b7b4bec164f998a2a51ea. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/USL4Q1813946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d0f15aac209f0ef73dac83dad620d0e4b1925d75adc8ec5d9d761f5b61a0c6. 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/USL4Q1813947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72883f82a2bfc2882a3805b7ff4abe44867682ae2d10a210096d7181c3c0ab2d. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USL4R2172436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062267cce11c0e90d2eb51baa482ded3c2bce1cffc0b2afb48a3d6e3b942ca5f. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USL4R2172439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e44b4e04492f8b8b61420bc619878b42dccc6245d15e8076df41c1deb51b2f. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/USL4R2172441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a25a66f473edeb3ed1969cc67ed7cd3800efa68d8e56a2f858e950b2eebdc2. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USCGJ2291059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e02afe908ae1aa17ab4a0eabb7d2d4bf263cfefcdcd2f802df34af68e18aa97. 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/USCGJ2291060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a690ce664907b8777cb96cad3fabcddb58bf09d393d33eb37883252a66f4b02. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/USCGJ2291061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e4a0aeeef3d832a859581771bef174023a74a06cc4104b985123ed9ca328f8. 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/USCGJ2291062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640f54daa1c3a858ef3cb199fd9e1afa49a4cdeeaa5709f6681362d9e71f77d5. 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/USCGJ2291063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa097f2f922313bf148207d5644690b7091fd712bfad78470e08fe9d3ff192f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USCGJ2291064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7fc1124e96a21b8a25ccd4744e7f8516de21065c6ae79fab213c4fe83fa21c. 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/USCGJ2291065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fce24dc65e840b8fc217dd43c4f5230024879ed9ffc5bd353fbf3175b95d80. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/USCGJ2287886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036f1c3e4dc2c64504920aa530fab4fe20fcefff048a751f0d9b3b486fd8849b. 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/USDY42245305.
Relaxing Music for Studying, Concentration and Memory
Ambient Music for Deep Focus and Concentration
Lofi Beats for Relaxing and Studying, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc266f45c3460c7e80eeadaf56e581bcb2be8d557b70326c1dfa5e5c33d10920. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USMH92351589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6930290e934a3fc34b1f55105c6d2b7b6d0ec66c81537dc74febf63f00d40667. 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/USMH92351591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd5e9a4d6439602fbf4ec86ccfc706d6b2008cd5486a7f66ca7a7b0729c964b. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/USCGJ2470225.
Relaxing Ambient Music for Deep Focus & Work