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 0x8c7060814a6727aa500bb85793e09f5c9af0d1afc34003004c6f15645aef37c4. 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/fc24d8a6-34d9-4cba-a10c-9ebef3d97b25.json and https://artists.proofprofile.net/proofs/artist/fc24d8a6-34d9-4cba-a10c-9ebef3d97b25.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 0xb9be81deb355703eaf1575103e169832198ca0526cbab2541c695f2ec886f165. 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/NL2QC2000129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeebde71b994d9b4596ce136a09fc48b69b447b3d079d8f39aa312f1e7798061. 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/DEXW62300431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7457d42967dc3854dd0eb18418b8f8ccd81d0ba15ac98f1a9ec36e9e0bbefd05. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/USLZJ1917919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffefc5fe7bbd5d81be21f5334a0e140c41c8828727667cecf137e7dc703fd56. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/DEPI82432263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7050cc751fc111d63cf3cc8adde91c47820b1b50912bae96750e70055d7dd0a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEPI82559413.
Crossfit 2021: The Best Music for Your Workout
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf290482225e96295407220238c2f3462ec9192b4a13b7109df81ce9c5c00299e. 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/ITM2J2100014.
Gym Music 2024: Best Gym Music - Motivation Mix - Workout Beats - Sport Music - Crossfit Music - Running Music - Workout Music by Hoop Records
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf290482225e96295407220238c2f3462ec9192b4a13b7109df81ce9c5c00299e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITM2J2100014.
Gym Music Hits 2024: The Best Music Hits for Your Gym Moment
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf290482225e96295407220238c2f3462ec9192b4a13b7109df81ce9c5c00299e. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/ITM2J2100014.
Summer Dance 2025: The Best Dance Music for Your Summer by Hoop Records
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb170bf29d963be741847b83746b3f7c3c80b55908cccf64d55a56ddb5526cf. 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/QZS7J2455360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d93d21fe4c86fd50d73d64f5dd1d4ca0d5af3becd04a095a96d8c1515eeac35. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/DEYZ62200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0079d7b5ce42ad67bf3f95c61caa348a4e6c293ee9f8fa73fc0443acf5e22c46. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NL2QC2100405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc546a7f1438ebef3682fe4835b8fb1072d828efbf3a934a250343591afd609a5. 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/NLZ542100797.