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 0x641d7cbf46a0b91a86c821181099a934d6be9d79b37edbda141d1c2d040ac091. 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/11dc170c-ac49-4be2-8347-e2c2ab3dad5d.json and https://artists.proofprofile.net/proofs/artist/11dc170c-ac49-4be2-8347-e2c2ab3dad5d.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 0x9da7fb5e3edf17be2ea1f18a17a378073b8d5bd73d6570a877be3909544d835f. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZTV32468877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd0997df27124677282b21d338707f10fac0a8ccdaab7ba952bc3a69f3c9695. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/QZTV32468884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0946a307230a0ee8ebb78ffc2f05c7d8efe26fb05ca4c3b16392eb71764d77. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTV32468893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d149d2b42c5c6d5a40027b240af256bc93ed45b9bd085b2ff402b9788bec89. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTV32468901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64feb7a5b06412c669e6c1380753b4301b3ade291e8b434e80001d113566748c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZTV32468910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddb8545fc31bd19a25a598c5aefc43b60c8cdf2b1c1b5a64982b00503d98795. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZTV32468919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240702a9e19b8559738128dd89bdd6d6eec7b734856fa8feb75ba99ed5366c83. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZTV32468927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57591af75a44ec76d8e284ca78865e2dd04d42077d18536ffa48a9f227197d4d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZTV32468955.
Rhythmic Canine Melodies: Harmonies by Ocean Waves
Rainy Day with Dogs: Soothing Sounds for Your Pet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa102b5faa1b0cd49217cfe92746a78f4276500100834472a1b6ee3f70b240089. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBPS83966302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2deef11e3b7568649dafe518f4c9a282fd6d4ac891dd0eb6a4b69c037f5b8c3f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTV32442775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f28357255f6736587a36be0d738d20a959b6fc60e17099343edc59736da8cd. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZTV32442789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e76b9cd357afc4008fb3069efa818161c7837fd892f4f9c84b09946f797ef5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTV32442797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa488f95685defa0309a504b37710f99c67bcc345a13f3aed76e7c0ab4b096c11. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QZTV32442804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73b4ff410513b8a7c4abfa346ce082112948375fd0258bfdd0c92767ee547da. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/QZTV32442822.
Puppy Harmonics: Soothing Sounds for Dogs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304635d225ce7673648aeb73e347665f0431f1e22b63f3fa7c89786cbc53aa6a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZTV32485067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ea395686e02d93286bc466d8d5948407455bf4b0b09bc617a784b1becb9c00. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QZTV32485091.
Binaural Dogs Comfort: Rain Nature and Birds Sounds
Dogs’ Relaxing Waterfall: Natural Sounds to Calm and Comfort
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83e5c708db50c7eb190b4c4a99c0e0a9ecf019e6aea8d0fc2e0a49e5f052fea. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USLZJ2496681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4e18c452f6de427eef9b21a59774124c7f7fdd8eba58e371fedb25da9cae32. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USLZJ2496687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf491e51b4181d1a182499b2bef8e40e5f969324cca0ded0d9be78b7ccb59cca3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USLZJ2496710.
Salty Paws and Ocean Breezes: Soothing Binaural Sounds for Canine Companions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea8906908e4d8a900b1b4d711836a4f1978107abd4902cdd4007337947a67de. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZ5FN2423301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f0e42209acf83388714208fe2eea3ff281d90b6e2631362e71eaa83b82af38. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QZ5FN2423309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d5ee8919c4bca4d89e9a38177d7f248f07de85fcf035c7ed7d23ff0a338621. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZ5FN2423318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70822de4a1848600f06fd8d261eeda30adcce19d182bb9f9e73a5539d04e00e2. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZ5FN2423333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1919f91fd5e76b21fc011b7830b80bd9ed8a262a737f03320395714b9b692c80. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZ5FN2423354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aaa703b0e7a90245bae027338351168c62e9010b8cdf4da6f21cd38e202919c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZ5FN2423360.
Raindrops and Ruffles: A Binaural Lullaby for Doggy Dreams
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe225eccea8e83869417e4c91d964a95396fc88f69d38435c7ed806ca56d9e98. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QZZEB2336354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1d56105cb00c3baa0b07507e79567dfeb81318bbc0616eaca80ca823ef2d6e. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZ5CV1927502.
Canine Comfort: Crackling Fire Music for Dogs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e00af00022619ed4d384566746361fabe9fe81bf9b78876cc1f2d9489b53b2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZEB2305600.
Paws by the Fireside: Ember's Calm Rhapsody
Musical Ember Harmony: Fireside Melodies for Happy Dogs
Paws in Harmony by the Musical Firelight
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64b8673e816eda2daadd1512cf56beffb6bd16bf6e19d2b0dc33fa764d5cb21. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZ8B2381163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd355ca9b652fb93e688fd6ba420ae209c45a3e78a80b5257098a6ed396b81e3. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZZ8B2381171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f688fedd4c917fd196f79e3f6e63185dac5d092dede47aa680d2f25ccb7e40. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZ8B2381179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bde9a6fca97a0f29ea9e56a171d8ea2c221f272f1dd19f729746b7e48b60308. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZZ8B2381186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821b59a4401d23b28f5cd0924715b4bbcb8767e29e78ca5ed46fedf663d8fd4d. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZZ8B2381194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748fe18ea1658e97b1e7655ba93201d74f16b163591d2f5e18104b253624ee9c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZ8B2381204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570900780e96c7f88c1fb7068000e9d587ee511213e71b207cbe5de506fa84bb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZZ8B2381212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7ed43360543aa4c35af815427438fb2dc0a7f91da23c497dcfd0a8ca95bd64. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZ8B2381219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935f140f40033b4fedf2f4d2120580b029709631d82e6248b5c258e2dfb99873. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QZZ8B2381227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df6207904e70a101e6a2c824ec7d57027057b4dfb14695ddc790179b0399cf3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZ8B2381233.
Rhythmic Flames: Melodies for Four-Legged Friends
Music for Stress Relief: Peaceful Pondside Doggy Recitative