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 0x25c3d5d9e5deac9364af82872f5bb4d5d8513d3de3fa69f46d853040798d1cf1. 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/d0b870ec-005d-4932-9745-bac8140c06bd.json and https://artists.proofprofile.net/proofs/artist/d0b870ec-005d-4932-9745-bac8140c06bd.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4012e9298a42631259173f6d53d62f148850bf3c23bd780a88c4519008c335. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTAY2254994.
Calming Music For Dogs (Relaxing With Rain Sounds)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9348a955944f67db9b37a515de565ef7401a17fa14eba8884e4a17ce01325e8d. 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/QZTBB2266086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007edb3942d3041bf3797864e9cebcb77ecb5531c470e0ac1e6a73fea858bb24. 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/QZTBB2266087.
Relaxing Music For Dogs (With Rain Sounds)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220b39b558bd2fbc87e363ceb0cb03f95bddeb857f2c17b951c97f8ae777f7b6. 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/QZFZ22390067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a00e0d4f83fc4078de467d909cbbec07a092904e1eb98880e2555a91176677. 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/QZDA52353146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396f746b3c4d70e0a2ce35679d442ed8e5c03530cae52b611399bfcb8769decd. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFZ72367808.
Oceanic Rainy Days (With Ocean And Rain Sounds)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e60dfd8bfa5617e2c3ab4f5e58f06512c9b3ab0829fb8e2bda2311139d5eac. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/QZK6M2397448.
Calming Music For Cats (With Rain Sounds)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6032f1e65e8ee5fb6d951733c415fa919b4e1f2e9e9474e7f5d1869f6c2b8f76. 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/QZDA42304181.
Relaxing Music For Dogs (With Ocean Sounds)
Peaceful Music For Dogs (With Ocean Sounds)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf13e053ec48f2f34f9bd23b4cfb6c7cb6157f95640df1da58d9ecf703ca83b5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6L2353999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2681613a543f3a4711a8696c8e943010e0231bfa5f30301d2898e97bf7f996cd. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:30:19Z), 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/QZK6K2336770.
Relaxing Moment For Dogs (With Ocean Sounds)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebd9998ab807f363456ae8a54c66c8cf849577a13cca95daf600b3a23637e6e. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZWFH2329770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc115a2097b1702c67972fd2e2cae4e6be5666cca71dbadb50a3a764fc276994d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:16:02Z), 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/QZWFM2399037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb08281615e589675df15721a73c5e9a1f6e94c4c5616c582ab8fe211b481e0d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZDA42431775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921c557927a83c5f7591d4acd719bb476676e0ec57bc848a7bfb68662325ef4f. 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/QZHNB2429695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0142810746a47f7f53057271baeb1741f4fb916db45eea5a07bb90adbcf70c9. 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/QZTV32467118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d61d2fb3582c0edde3c1a0d38ba8989ff2aea6e306356dfcc0e1023098027b. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZWDD2422116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3571b4256ce223c95496ff4fdc03f1684efbf0061bf8ff8d681bfdc38a79e2a8. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZWV32437781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488a7a68247bf4cfa445d52cb80e82f6408c059aae9773612d68d139923d66f3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZWV32475354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa064ba48f080671f494bbf36b2c0d332f6d0f33c8cd1c23db24385f61f72cfb. 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/QZZ8A2460688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646d9eb2131c07e99f805dc5fea0fa88be3acc06b348fe41358af7e967f7bdeb. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZZ8A2460707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f325e5446d7668ab95591ceaee603ff835ec588982416f4e4b7483cbaef261c. 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/QZZ8A2460708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9027139828102dfbdf4963645507c2c024abbdf537fe62c066cb3eefd2c85de4. 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/QZZ8B2420052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd826fe8ff402630e3b53b06bf1b3faef44c9e716ff52077c091ce60a886ff6. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZZ8B2420054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b617a01a3c53e33e302020df38081a7a32f87c8e0f811de31af4ae954b7e16. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:25:33Z), 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/QZZ8B2420055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc594eff4dc3f02b8e1186c35d236bbd8a66a522a64d729dfee22fa8e7b7e4a. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZZ8B2420056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e2373c8300317d8a41967f141908676eb6ea24209bae4dc326bf09614205e9. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZZEC2425981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f31a7d87680861abf16e138121bbc855f2771c1558e973799abbbbf20871e2. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:19:27Z), 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/QZZEC2426053.